nb

nb is a command line and local web note‑taking, bookmarking, archiving, and knowledge base application with:

• plain text data storage,
• encryption,
• filtering, pinning, #tagging, and search,
• Git-backed versioning and syncing,
• Pandoc-backed conversion,
• [[wiki-style linking]],
• terminal and GUI web browsing,
• inline images,
• todos with tasks,
• global and local notebooks,
• organization with folders,
• customizable color themes,
• extensibility through plugins,

and more, in a single portable script.

nb creates notes in text-based formats like Markdown, Org, LaTeX, and AsciiDoc, can work with files in any format, can import and export notes to many document formats, and can create private, password-protected encrypted notes and bookmarks. With nb, you can write notes using Vim, Emacs, VS Code, Sublime Text, and any other text editor you like, as well as terminal and GUI web browsers. nb works in any standard Linux / Unix environment, including macOS and Windows via WSL, MSYS, and Cygwin. Optional dependencies can be installed to enhance functionality, but nb works great without them.

nb is also a powerful bookmarking system featuring:

• locally-served, text-centric, distraction-free bookmark browsing in terminal and GUI web browsers,
• local full-text search of cached page content with regular expression support,
• convenient filtering and listing,
• Internet Archive Wayback Machine snapshot lookup for broken links,
• tagging, pinning, linking, and full integration with other nb features.

Page information is downloaded, cleaned up, structured, and saved into normal Markdown documents made for humans, so bookmarks are easy to view and edit just like any other note.

nb uses Git in the background to automatically record changes and sync notebooks with remote repositories. nb can also be configured to sync notebooks using a general purpose syncing utility like Dropbox so notes can be edited in other apps on any device.

nb is designed to be portable, future-focused, and vendor independent, providing a full-featured and intuitive experience within a highly composable multimodal user-centric text interface. The entire program is contained within a single well-tested shell script that can be installed, copied, or curled almost anywhere and just work, using a strategy inspired by progressive enhancement for various experience improvements in more capable environments. nb works great whether you have one notebook with just a few notes or dozens of notebooks containing thousands of notes, bookmarks, and other items. nb makes it easy to incorporate other tools, writing apps, and workflows. nb can be used a little, a lot, once in a while, or for just a subset of features. nb is flexible.

Installation

Dependencies

Required

• Bash
  • nb works perfectly with Zsh, fish, and any other shell set as your primary login shell, the system just needs to have Bash available on it.
• Git
• A text editor with command line support, such as:
  • Vim,
  • Emacs,
  • Visual Studio Code,
  • Sublime Text,
  • Helix,
  • micro,
  • nano,
  • Atom,
  • TextMate,
  • MacDown,
  • some of these,
  • and many of these.

Optional

nb leverages standard command line tools and works in standard Linux / Unix environments. nb also checks the environment for some additional optional tools and uses them to enhance the experience whenever they are available.

Recommended:

• bat
• ncat or socat
• pandoc
• rg
• tig
• w3m

Also supported for various enhancements:

Ack, afplay, asciidoctor, The Silver Searcher (ag), catimg, Chafa, Chromium / Chrome, eza, ffplay, ImageMagick, glow, GnuPG, highlight, imgcat, joshuto, kitty's icat kitten, lowdown, lsd, Links, Lynx, mdcat, mdless, mdv, Midnight Commander (mc), mpg123, MPlayer, ncat, netcat, note-link-janitor (via plugin), pdftotext, Pygments, Ranger, readability-cli, rga / ripgrep-all, sc-im, socat, termvisage, termpdf.py, Tidy-Viewer (tv), timg, vifm, viu, VisiData

macOS / Homebrew

brew install xwmx/taps/nb

Installing nb with Homebrew also installs the recommended dependencies above and completion scripts for Bash, Zsh, and Fish.

Install the latest development version from the repository with:

brew install xwmx/taps/nb --head

nb is also available in homebrew-core. Installing it together with the bash formula is recommended:

brew install nb bash

Ubuntu, Windows, and others

npm

npm install -g nb.sh

After npm installation completes, run sudo "$(which nb)" completions install to install Bash and Zsh completion scripts (recommended).

On Ubuntu and WSL, you can run sudo "$(which nb)" env install to install the optional dependencies.

When nb is installed on Windows, socat (MSYS, Cygwin) is recommended.

nb is also available under its original package name, notes.sh, which comes with an extra notes executable wrapping nb.

Download and Install

To install as an administrator, copy and paste one of the following multi-line commands:

# install using wget
sudo wget https://raw.github.com/xwmx/nb/master/nb -O /usr/local/bin/nb &&
  sudo chmod +x /usr/local/bin/nb &&
  sudo nb completions install --download

# install using curl
sudo curl -L https://raw.github.com/xwmx/nb/master/nb -o /usr/local/bin/nb &&
  sudo chmod +x /usr/local/bin/nb &&
  sudo nb completions install --download

On Ubuntu and WSL, you can run sudo nb env install to install the optional dependencies.

User-only Installation

To install with just user permissions, simply add the nb script to your $PATH. If you already have a ~/bin directory, for example, you can use one of the following commands:

# download with wget
wget https://raw.github.com/xwmx/nb/master/nb -O ~/bin/nb && chmod +x ~/bin/nb

# download with curl
curl -L https://raw.github.com/xwmx/nb/master/nb -o ~/bin/nb && chmod +x ~/bin/nb

Installing with just user permissions doesn't include the optional dependencies or completions, but nb core functionality works without them. If you have sudo access and want to install the completion scripts and dependencies, run the following command:

sudo nb env install

Make

To install with Make, clone this repository, navigate to the clone's root directory, and run:

sudo make install

This will also install the completion scripts on all systems and the recommended dependencies on Ubuntu and WSL.

bpkg

To install with bpkg:

bpkg install xwmx/nb

basher

To install with basher:

basher install xwmx/nb

Tab Completion

Bash, Fish, and Zsh tab completion should be enabled when nb is installed using the methods above, assuming you have the appropriate system permissions or installed with sudo. If completion isn't working after installing nb, see the completion installation instructions.

Updating

When nb is installed using a package manager like npm or Homebrew, use the package manager's upgrade functionality to update nb to the latest version. When installed via other methods, nb can be updated to the latest version using the nb update subcommand.

Overview

To get started, simply run:

nb

nb sets up your initial home notebook the first time it runs.

By default, notebooks and notes are global (at ~/.nb), so they are always available to nb regardless of the current working directory. nb also supports local notebooks.

📝 Notes

Adding

Use nb add (shortcuts: nb a, nb +) to create new notes:

# create a new note in your text editor
nb add

# create a new note with the filename "example.md"
nb add example.md

# create a new note containing "This is a note."
nb add "This is a note."

# create a new note with piped content
echo "Note content." | nb add

# create a new password-protected, encrypted note titled "Secret Document"
nb add --title "Secret Document" --encrypt

# create a new note in the notebook named "example"
nb example:add "This is a note."

# create a new note in the folder named "sample"
nb add sample/

nb add with no arguments or input will open the new, blank note in your environment's preferred text editor. You can change your editor using the $EDITOR environment variable or nb set editor.

nb files are Markdown files by default. The default file type can be changed to whatever you like using nb set default_extension.

nb add has intelligent argument parsing and behaves differently depending on the types of arguments it receives. When a filename with extension is specified, a new note with that filename is opened in the editor:

nb add example.md

When a string is specified, a new note is immediately created with that string as the content and without opening the editor:

❯ nb add "This is a note."
Added: [1] 20200101000000.md

nb add <string> is useful for quickly jotting down notes directly via the command line. Quoting content is optional, but recommended.

When no filename is specified, nb add uses the current datetime as the filename.

nb add can also receive piped content, which behaves the same as nb add <string>:

# create a new note containing "Note content."
❯ echo "Note content." | nb add
Added: [6] 20200101000100.md

# create a new note containing the clipboard contents on macOS
❯ pbpaste | nb add
Added: [7] 20200101000200.md

# create a new note containing the clipboard contents using xclip
❯ xclip -o | nb add
Added: [8] 20200101000300.md

Content can be passed with the --content <content> option, which also creates a new note without opening the editor:

nb add --content "Note content."

When content is piped, specified with --content <content>, or passed as a string argument, use the --edit flag to open the file in the editor before the change is committed.

The title, filename, and content can also be specified with long and short options:

❯ nb add --filename "example.md" -t "Example Title" -c "Example content."
Added: [9] example.md "Example Title"

The -t <title> / --title <title> option also sets the filename to the title, lowercased with spaces and non-filename characters replaced with underscores:

❯ nb add --title "Example Title" "Example content."
Added: [10] example_title.md "Example Title"

Tags can be added with the --tags <tag1>,<tag2>... option, which takes a comma separated list of tags, converts them to #hashtags, and inserts them between the title and content:

❯ nb add "Example content." --title "Tagged Example" --tags tag1,tag2
Added: [11] tagged_example.md "Tagged Example"

❯ nb show 11 --print
# Tagged Example

#tag1 #tag2

Example content.

Search for tagged items with nb search / nb q:

# search for items tagged with "#tag1"
nb search --tag tag1

# search for items tagged with "#tag1" AND "#tag2", short options
nb q -t tag1 -t tag2

# search for items tagged with "#tag1" OR "#tag2", arguments
nb q \#tag1 --or \#tag2

Files can be created with any file type by specifying the extension either in the filename (example.md), the extension by itself (.md), or via the --type <type> option (--type md):

# open a new Org file in the editor
nb add example.org

# open a new reStructuredText file in the editor
nb add --type rst

# open a new JavaScript file in the editor
nb add .js

Combining a type argument with piped clipboard content provides a very convenient way to save code snippets using a clipboard utility such as pbpaste, xclip, or pb:

# save the clipboard contents as a JavaScript file in the current notebook
pb | nb add .js

# save the clipboard contents as a Rust file in the "rust" notebook
# using the shortcut alias `nb a`
pb | nb a rust: .rs

# save the clipboard contents as a Haskell file named "example.hs" in the
# "snippets" notebook using the shortcut alias `nb +`
pb | nb + snippets: example.hs

Use nb show and nb browse to view code snippets with automatic syntax highlighting and use nb edit to open in your editor.

The clip plugin can also be used to create notes from clipboard content.

Piping, --title <title>, --tags <tag-list>, --content <content>, and content passed in an argument can be combined as needed to create notes with content from multiple input methods and sources using a single command:

❯ pb | nb add "Argument content." \
    --title   "Sample Title"      \
    --tags    tag1,tag2           \
    --content "Option content."
Added: [12] sample_title.md "Sample Title"

❯ nb show 12 --print
# Sample Title

#tag1 #tag2

Argument content.

Option content.

Clipboard content.

For a full list of options available for nb add, run nb help add.

Password-Protected Encrypted Notes and Bookmarks

Password-protected notes and bookmarks are created with the -e / --encrypt flag and encrypted with AES-256 using OpenSSL by default. GPG is also supported and can be configured with nb set encryption_tool.

Each protected note and bookmark is encrypted individually with its own password. When an encrypted item is viewed, edited, or opened, nb will simply prompt for the item's password before proceeding. After an item is edited, nb automatically re-encrypts it and saves the new version.

Encrypted notes can be decrypted using the OpenSSL and GPG command line tools directly, so you aren't dependent on nb to decrypt your files.

Templates

Create a note based on a template by assigning a template string or path to a template file with add --template <template>:

# create a new note based on a template specified by path
nb add --template /path/to/example/template

# create a new note based on a template defined as a string
nb add --template "{{title}} • {{content}}"

nb template tags are enclosed in double curly brackets. Supported tags include:

An example complete markdown template could look like the following:

# {{title}}

{{date +"%Y-%m-%d"}}

{{tags}}

{{content}}

Templates are Bash strings processed with eval, so you can use command substitution ($(echo "Example command")) to include the output from command line tools and shell code.

A default template can be configured by assigning a string or path to the $NB_DEFAULT_TEMPLATE variable in your ~/.nbrc file:

# set the default template to a path
export NB_DEFAULT_TEMPLATE="/path/to/example/template"

# set the default template with a string
export NB_DEFAULT_TEMPLATE="{{title}} • {{content}}"

Use nb add --no-template to skip using a template when one is assigned.

Shortcut Aliases: nb a, nb +

nb includes shortcuts for many commands, including nb a and nb + for nb add:

# create a new note in your text editor
nb a

# create a new note with the filename "example.md"
nb a example.md

# create a new note containing "This is a note."
nb + "This is a note."

# create a new note containing the clipboard contents with xclip
xclip -o | nb +

# create a new note in the notebook named "example"
nb example:a

Other Aliases: nb create, nb new

nb add can also be invoked with nb create and nb new for convenience:

# create a new note containing "Example note content."
nb new "Example note content."

# create a new note with the title "Example Note Title"
nb create --title "Example Note Title"

Adding with nb browse

Items can also be added within terminal and GUI web browsers using nb browse add / nb b a:

❯ nb browse add
❯nb · home : +

[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]

[add]

Pass a filename, relative path, and / or notebook name to create a new note at that location:

# open the add form in the browser to create the file "file.md" in the folder "example"
nb browse add "example/file.md"

nb browse add includes options for quickly pre-populating new notes with content:

❯ nb browse add --title "Example Title" --content "Example content." --tags tag1,tag2
❯nb · home : +

[# Example Title                                      ]
[                                                     ]
[#tag1 #tag2                                          ]
[                                                     ]
[Example content.                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]
[                                                     ]

[add]

nb browse add can also be opened with nb add --browse / nb a -b.

For more information, see Browsing.

Listing & Filtering

To list notes and notebooks, run nb ls (shortcut alias: nb):

Notebooks are listed above the line, with the current notebook highlighted and/or underlined, depending on terminal capabilities. nb ls also includes a footer with example commands for easy reference. The notebook header and command footer can be configured or hidden with nb set header and nb set footer.

❯ nb ls
home
----
[3] example.md · "Example content."
[2] sample.md · "Sample content."
[1] demo.md · "- Demo list item one."

Notes from the current notebook are listed in the order they were last modified. By default, each note is listed with its id, filename, and an excerpt from the first line of the note. When a note has a title, the title is displayed instead of the filename and first line.

Markdown titles can be defined within a note using either Markdown h1 style or YAML front matter:

# Example Title

Sample Title
============

---
title: Demo Title
---

Org, LaTeX, and AsciiDoc titles are recognized in .org,.latex, and .asciidoc / .adoc files:

#+title: Example Org Title

\title{Example LaTeX Title}

= Example AsciiDoc Title

Once defined, titles are displayed in place of the filename and first line in the output of nb ls:

❯ nb ls
home
----
[3] Example Title
[2] Sample Title
[1] Demo Title

Pass an id, filename, or title to view the listing for that note:

❯ nb ls Sample\ Title
[2] Sample Title

❯ nb ls 3
[3] Example Title

If there is no exact match, nb will list items with titles and filenames that fuzzy match the query:

❯ nb ls exa
[3] Example Title

❯ nb ls ample
[3] Example Title
[2] Sample Title

Multiple words act like an OR filter, listing any titles or filenames that match any of the words:

❯ nb ls example demo
[3] Example Title
[1] Demo Title

When multiple words are quoted, filter titles and filenames for that phrase:

❯ nb ls "example title"
[3] Example Title

For full text search, see Search.

To view excerpts of notes, use the --excerpt or -e option, which optionally accepts a length:

❯ nb ls 3 --excerpt
[3] Example Title
-----------------
# Example Title

This is an example excerpt.

❯ nb ls 3 -e 8
[3] Example Title
-----------------
# Example Title

This is an example excerpt.

More example content:

- one
- two

Several classes of file types are represented with emoji indicators to make them easily identifiable in lists. For example, bookmarks and encrypted notes are listed with 🔖 and 🔒:

❯ nb ls
home
----
[4] Example Note
[3] 🔒 encrypted-note.md.enc
[2] 🔖 Example Bookmark (example.com)
[1] 🔖 🔒 encrypted.bookmark.md.enc

File types include:

 🔉  Audio
 📖  Book
 🔖  Bookmark
 🔒  Encrypted
 📂  Folder
 🌄  Image
 📄  PDF, Word, or Open Office document
 📹  Video

By default, items are listed starting with the most recently modified. To reverse the order, use the -r or --reverse flag:

❯ nb ls
home
----
[2] Todos
[3] Example Title
[1] Ideas

❯ nb ls --reverse
[1] Ideas
[3] Example Title
[2] Todos

Notes can be sorted with the -s / --sort flag, which can be combined with -r / --reverse:

❯ nb ls
home
----
[2] Sample Title
[3] Example Title
[1] Demo Title

❯ nb ls --sort
[1] Demo Title
[2] Sample Title
[3] Example Title

❯ nb ls --sort --reverse
[3] Example Title
[2] Sample Title
[1] Demo Title

nb with no subcommand behaves like an alias for nb ls, so the examples above can be run without the ls:

❯ nb
home
----
[2] Sample Title
[3] Example Title
[1] Demo Title

❯ nb example
[3] Example Title

❯ nb 3 --excerpt
[3] Example Title
-----------------
# Example Title

This is an example excerpt.

❯ nb 3 -e 8
[3] Example Title
-----------------
# Example Title

This is an example excerpt.

More example content:

- one
- two

❯ nb --sort
[1] Demo Title
[2] Sample Title
[3] Example Title

❯ nb --sort --reverse
[3] Example Title
[2] Sample Title
[1] Demo Title

Short options can be combined for brevity:

# equivalent to `nb --sort --reverse --excerpt 2` and `nb -s -r -e 2`:
❯ nb -sre 2
[3] Example Title
-----------------
# Example Title

[2] Sample Title
----------------
Sample Title
============
[1] Demo Title
--------------
---
title: Demo Title

nb and nb ls display the 15 most recently modified items. The default limit can be changed with nb set limit <number>. To list a different number of items on a per-command basis, use the -n <limit>, --limit <limit>, --<limit>, -a, and --all flags:

❯ nb -n 1
home
----
[5] Example Five
4 omitted. 5 total.

❯ nb --limit 2
home
----
[5] Example Five
[4] Example Four
3 omitted. 5 total.

❯ nb --3
home
----
[5] Example Five
[4] Example Four
[3] Example Three
2 omitted. 5 total.

❯ nb --all
home
----
[5] Example Five
[4] Example Four
[3] Example Three
[2] Example Two
[1] Example One

Lists can be paginated with -p <number> / --page <number>, which paginates by the value of nb set limit by default, or the value of -n <limit>, --limit <limit>, or --<limit> when present:

❯ nb
home
----
[6] Example Six
[5] Example Five
[4] Example Four
[3] Example Three
[2] Example Two
[1] Example One

❯ nb set limit 3
NB_LIMIT set to 3

❯ nb --page 1
[6] Example Six
[5] Example Five
[4] Example Four

❯ nb -p 2
[3] Example Three
[2] Example Two
[1] Example One

❯ nb -p 2 --limit 2
[4] Example Four
[3] Example Three

❯ nb -p 3 --2
[2] Example Two
[1] Example One

List #tagged items by passing \#escaped or "#quoted" hashtags or tags specified with the --tags option. Multiple tags perform an AND query:

# list items in the current notebook tagged with "#tag1", escaped
nb \#tag1

# list items in the "example" notebook tagged with "#tag2", quoted
nb example: "#tag2"

# list items in all notebooks tagged with "#tag1", long option
nb \#tag1 --all

# list items in the current notebook tagged with "#tag1" AND "#tag2"
nb \#tag1 "#tag2"

# list items in all notebooks tagged with "#tag2" AND "#tag3", short option
nb --tags tag2,tag3 -a

nb ls is a combination of nb notebooks and nb list in one view and accepts the same arguments as nb list, which lists only notes without the notebook list and with no limit by default:

❯ nb list
[100] Example One Hundred
[99]  Example Ninety-Nine
[98]  Example Ninety-Eight
... lists all notes ...
[2]   Example Two
[1]   Example One

For more information about options for listing notes, run nb help ls and nb help list.

Listing with browse

Items can be listed within terminal and GUI web browsers using nb browse / nb b:

❯ nb browse example:sample/demo/
❯nb · example : sample / demo / +

search: [                    ]

[example:sample/demo/7] Title Seven
[example:sample/demo/6] Title Six
[example:sample/demo/5] Title Five
[example:sample/demo/4] Title Four
[example:sample/demo/3] Title Three

next ❯

For more information, see Browsing.

Editing

You can edit an item in your editor with nb edit (shortcut: nb e):

# edit note by id
nb edit 3

# edit note by filename
nb edit example.md

# edit note by title
nb edit "A Document Title"

# edit note 12 in the notebook named "example"
nb edit example:12

# edit note 12 in the notebook named "example", alternative
nb example:12 edit

# edit note 12 in the notebook named "example", alternative
nb example:edit 12

# edit the last modified item
nb edit --last

edit and other subcommands that take an identifier can be called with the identifier and subcommand name reversed:

# edit note by id
nb 3 edit

nb edit can also receive piped content, which it appends to the specified note without opening the editor:

echo "Content to append." | nb edit 1

Content can be passed with the --content <content> option, which also appends the content without opening the editor:

nb edit 1 --content "Content to append."

Use the --overwrite option to overwrite existing file content and the --prepend option to prepend the new content before existing content.

When content is piped or specified with --content <content>, use the --edit flag to open the file in the editor before the change is committed.

Edit the last modified item with --last / -l:

# edit the last modified item
nb edit --last

# edit the last modified item, short option
nb edit -l

Editing Encrypted Notes

When a note is encrypted, nb edit prompts you for the note password, opens the unencrypted content in your editor, and then automatically reencrypts the note when you are done editing.

Shortcut Alias: nb e

nb edit can be called by the shortcut alias, nb e:

# edit note by id
nb e 3

# edit note by filename
nb e example.md

# edit note by title
nb e "A Document Title"

# edit note by id, alternative
nb 3 e

# edit note 12 in the notebook named "example"
nb e example:12

# edit note 12 in the notebook named "example", alternative
nb example:12 e

# edit note 12 in the notebook named "example", alternative
nb example:e 12

# edit the last modified item, short option
nb e -l

For nb edit help information, run nb help edit.

Editing with browse

Items can be edited within terminal and GUI web browsers using nb browse edit / nb b e:

❯ nb browse edit text:formats/markdown/123
❯nb · text : formats / markdown / 123 · ↓ · editing · - | +

[# Daring Fireball: Markdown (daringfireball.net)         ]
[                                                         ]
[<https://daringfireball.net/projects/markdown/>          ]
[                                                         ]
[## Related                                               ]
[                                                         ]
[- <https://en.wikipedia.org/wiki/Markdown>               ]
[                                                         ]
[## Comments                                              ]
[                                                         ]
[See also:                                                ]
[                                                         ]
[- [[text:formats/org]]                                   ]
[- [[cli:apps/nb]]                                        ]
[                                                         ]
[## Tags                                                  ]
[                                                         ]

[save] · last: 2021-01-01 01:00:00

For more information, see browse edit and Browsing.

Viewing

Notes and other items can be viewed using nb show (shortcut: nb s):

# show note by id
nb show 3

# show note by filename
nb show example.md

# show note by title
nb show "A Document Title"

# show note by id, alternative
nb 3 show

# show note 12 in the notebook named "example"
nb show example:12

# show note 12 in the notebook named "example", alternative
nb example:12 show

# show note 12 in the notebook named "example", alternative
nb example:show 12

By default, nb show opens notes in less, with syntax highlighting if bat, highlight, or Pygments is installed. You can navigate in less using the following keys:

Key               Function
---               --------
mouse scroll      Scroll up or down
arrow up or down  Scroll one line up or down
f                 Jump forward one window
b                 Jump back one window
d                 Jump down one half window
u                 Jump up one half window
/<query>          Search for <query>
n                 Jump to next <query> match
q                 Quit

If less scrolling isn't working in iTerm2, go to "Settings" -> "Advanced" -> "Scroll wheel sends arrow keys when in alternate screen mode" and change it to "Yes". More Info

Use the -p / --print option to print to standard output with syntax highlighting:

❯ nb show 123 --print
# Example Title

Example content:

- one
- two
- three

Use nb show --print --no-color to print without syntax highlighting.

When Pandoc is available, use the -r / --render option to render the note to HTML and open it in your terminal browser:

nb show example.md --render
# opens example.md as an HTML page in w3m, links, or lynx

nb show also supports previewing other file types in the terminal, depending on the tools available in the environment. To prefer specific tools for certain file types, nb provides configuration variables that can be set in your ~/.nbrc file, which can be opened in your editor with nb settings edit.

Supported file types and tools include:

• Markdown files ($NB_MARKDOWN_TOOL):
  • bat
  • glow
  • lowdown
  • mdcat
  • mdless
  • mdv
• PDF files:
  • termpdf.py with kitty
  • pdftotext
• Audio files ($NB_AUDIO_TOOL):
  • mplayer
  • afplay
  • mpg123
  • ffplay
• Images ($NB_IMAGE_TOOL):
  • catimg
  • Chafa
  • ImageMagick with a terminal that supports sixels
  • imgcat with iTerm2
  • kitty's icat kitten
  • termvisage
  • timg
  • viu
• Folders, Directories, Notebooks ($NB_DIRECTORY_TOOL):
  • eza
  • joshuto
  • lsd
  • Midnight Commander (mc)
  • ranger
  • vifm
• Word Documents:
  • Pandoc with w3m or links
• Excel, CSV, TSV, and data files ($NB_DATA_TOOL):
  • VisiData
  • sc-im
  • Tidy-Viewer (tv)
• EPUB ebooks:
  • Pandoc with w3m or links

When using nb show with other file types or if the above tools are not available, nb show opens files in your system's preferred application for each type.

nb show also provides options for querying information about an item. For example, use the --added / -a and --updated / -u flags to print the date and time that an item was added or updated:

❯ nb show 2 --added
2020-01-01 01:01:00 -0700

❯ nb show 2 --updated
2020-02-02 02:02:00 -0700

nb show is primarily intended for viewing items within the terminal. To view a file in the system's preferred GUI application, use nb open. To browse rendered items in terminal and GUI web browsers, use nb browse.

For full nb show usage information, run nb help show.

Shortcut Alias: nb s

nb show can be called using the shortcut alias nb s:

# show note by id
nb s 3

# show note by filename
nb s example.md

# show note by title
nb s "A Document Title"

# show note by id, alternative
nb 3 s

# show note 12 in the notebook named "example"
nb s example:12

# show note 12 in the notebook named "example", alternative
nb example:12 s

# show note 12 in the notebook named "example", alternative
nb example:s 12

Alias: nb view

nb show can also be invoked with nb view for convenience:

# show note by id
nb view 3

# show note by filename
nb view example.md

# show note by title
nb view "A Document Title"

# show note by id, alternative
nb 3 view

Viewing with browse

Items can be viewed within terminal and GUI web browsers using nb browse / nb b:

❯ nb browse text:formats/markdown/123
❯nb · text : formats / markdown / 123 · ↓ · edit | +
Daring Fireball: Markdown (daringfireball.net)

https://daringfireball.net/projects/markdown/

Related

  • https://en.wikipedia.org/wiki/Markdown

Comments

See also:

  • [[text:formats/org]]
  • [[cli:apps/nb]]

Tags

#markup #plain-text

Content

Daring Fireball: Markdown

Download

Markdown 1.0.1 (18 KB) — 17 Dec 2004

Introduction

Markdown is a text-to-HTML conversion tool for web writers. Markdown allows
you to write using an easy-to-read, easy-to-write plain text format, then
convert it to structurally valid XHTML (or HTML).

For more information, see Browsing.

Deleting

To delete one or more notes, pass any number of ids, filenames, titles, and other selectors to nb delete (shortcuts: nb d, nb -):

# delete item by id
nb delete 3

# delete item by filename
nb delete example.md

# delete item by title
nb delete "A Document Title"

# delete item by id, alternative
nb 3 delete

# delete item 12 in the notebook named "example"
nb delete example:12

# delete item 12 in the notebook named "example", alternative
nb example:12 delete

# delete item 12 in the notebook named "example", alternative
nb example:delete 12

# delete item 345 in the folder named "example"
nb delete example/345

# delete items with the ids 89, 56, and 21
nb delete 89 56 21

By default, nb delete will display a confirmation prompt. To skip, use the --force / -f option:

nb delete 3 --force

Shortcut Aliases: nb d, nb -

nb delete has the aliases nb d and nb -:

# delete note by id
nb d 3

# delete note by filename
nb d example.md

# delete note by title
nb - "A Document Title"

# delete note by id, alternative
nb 3 d

# delete note 12 in the notebook named "example"
nb - example:12

# delete note 12 in the notebook named "example", alternative
nb example:12 d

# delete note 12 in the notebook named "example", alternative
nb example:d 12

For nb delete help information, run nb help delete.

Deleting with nb browse

Items can be deleted within terminal and GUI web browsers using nb browse delete / nb b d:

❯ nb browse delete example:4
❯nb · example : 4 · ↓ · edit · - | +

              deleting

[4] example_file.md "Example Title"

              [delete]

For more information, see Browsing.

🔖 Bookmarks

nb includes a bookmarking system to conveniently create, annotate, view, search, browse, and manage collections of bookmarks.

Bookmarks in nb are stored as simple structured Markdown files containing information extracted from the bookmarked pages.

To create a new bookmark, pass a URL as the first argument to nb:

nb https://example.com

nb automatically generates a bookmark using information from the page:

# Example Title (example.com)

<https://example.com>

## Description

Example description.

## Content

Example Title
=============

This domain is for use in illustrative examples in documents. You may
use this domain in literature without prior coordination or asking for
permission.

[More information\...](https://www.iana.org/domains/example)

nb embeds the page content in the bookmark, making it available for full text search with nb search and locally-served, distraction-free reading and browsing with nb browse. When Pandoc is installed, the HTML page content is converted to Markdown. When readability-cli is installed, markup is cleaned up to focus on content. When Chromium or Chrome is installed on the system, nb automatically renders JavaScript-dependent pages and saves the resulting markup.

Many shells automatically escape special characters in URLs. If a URL contains characters that are preventing it from being saved in full, URLs can also be enclosed in quotes when passed to nb:

nb "https://example.com#sample-anchor"

In addition to caching the page content, you can also include a quote from the page in a ## Quote section using the -q <quote> / --quote <quote> option:

nb https://example.com --quote "Example quote line one.

Example quote line two."

# Example Title (example.com)

<https://example.com>

## Description

Example description.

## Quote

> Example quote line one.
>
> Example quote line two.

## Content

Example Title
=============

This domain is for use in illustrative examples in documents. You may
use this domain in literature without prior coordination or asking for
permission.

[More information\...](https://www.iana.org/domains/example)

Add a comment in a ## Comment section using the -c <comment> / --comment <comment> option:

nb https://example.com --comment "Example comment."

# Example Title (example.com)

<https://example.com>

## Description

Example description.

## Comment

Example comment.

## Content

Example Title
=============

This domain is for use in illustrative examples in documents. You may
use this domain in literature without prior coordination or asking for
permission.

[More information\...](https://www.iana.org/domains/example)

Add related URLs and linked selectors to a ## Related section using the -r (<url> | <selector>) / --related (<url> | <selector>) option:

nb https://example.com --related example:123 -r https://example.net

# Example Title (example.com)

<https://example.com>

## Description

Example description.

## Related

- [[example:123]]
- <https://example.net>

## Content

Example Title
=============

This domain is for use in illustrative examples in documents. You may
use this domain in literature without prior coordination or asking for
permission.

[More information\...](https://www.iana.org/domains/example)

Bookmarks can be tagged using the -t <tag1>,<tag2>... / --tags <tag1>,<tag2>... option. Tags are converted into #hashtags and added to a ## Tags section:

nb https://example.com --tags tag1,tag2

# Example Title (example.com)

<https://example.com>

## Description

Example description.

## Tags

#tag1 #tag2

## Content

Example Title
=============

This domain is for use in illustrative examples in documents. You may
use this domain in literature without prior coordination or asking for
permission.

[More information\...](https://www.iana.org/domains/example)

Search for tagged bookmarks with nb search / nb q:

nb search --tag tag1

nb q -t tag1

nb q \#tag1

nb search / nb q automatically searches archived page content:

❯ nb q "example query"
[10] 🔖 example.bookmark.md "Example Bookmark (example.com)"
------------------------------------------------------------
5:Lorem ipsum example query.

Bookmarks can also be encrypted:

# create a new password-protected, encrypted bookmark
nb https://example.com --encrypt

Encrypted bookmarks require a password before they can be viewed or opened.

Multiple URLs can be bookmarked with a single command by passing multiple <url> arguments. Additional arguments will be reused for each bookmark:

❯ nb https://example.com https://example.net --tags tag1,tag2 --filename example
Added: [1] 🔖 example.bookmark.md "Example Domain (example.com)"
Added: [2] 🔖 example-1.bookmark.md "Example Domain (example.net)"

Listing and Filtering Bookmarks

Bookmarks are included in nb, nb ls, nb list, and nb browse along with items of other types. nb bookmark and nb bookmark list can be used to list and filter only bookmarks:

❯ nb bookmark
Add: nb <url> Help: nb help bookmark
------------------------------------
[3] 🔖 🔒 example.bookmark.md.enc
[2] 🔖 Bookmark Two (example.com)
[1] 🔖 Bookmark One (example.com)

❯ nb bookmark list two
[2] 🔖 Bookmark Two (example.com)

Bookmarks are also included in nb, nb ls, and nb list:

❯ nb
home
----
[7] 🔖 Bookmark Three (example.com)
[6] Example Note
[5] 🔖 Bookmark Two (example.net)
[4] Sample Note
[3] 🔖 🔒 example-encrypted.bookmark.md.enc
[2] Demo Note
[1] 🔖 Bookmark One (example.com)

Use the --type <type> / --<type> option as a filter to display only bookmarks:

❯ nb --type bookmark
[7] 🔖 Bookmark Three (example.com)
[5] 🔖 Bookmark Two (example.net)
[3] 🔖 🔒 example-encrypted.bookmark.md.enc
[1] 🔖 Bookmark One (example.com)

❯ nb --bookmark
[7] 🔖 Bookmark Three (example.com)
[5] 🔖 Bookmark Two (example.net)
[3] 🔖 🔒 example-encrypted.bookmark.md.enc
[1] 🔖 Bookmark One (example.com)

nb saves the domain in the title, making it easy to filter by domain using any list subcommands:

❯ nb example.com
[7] 🔖 Bookmark Three (example.com)
[1] 🔖 Bookmark One (example.com)

For more listing options, see nb help ls, nb help list, and nb help bookmark.

Shortcut Aliases: nb bk, nb bm

nb bookmark can also be used with the aliases nb bk and nb bm:

❯ nb bk
Add: nb <url> Help: nb help bookmark
------------------------------------
[7] 🔖 Bookmark Three (example.com)
[5] 🔖 Bookmark Two (example.net)
[3] 🔖 🔒 example-encrypted.bookmark.md.enc
[1] 🔖 Bookmark One (example.com)

❯ nb bm example.net
[5] 🔖 Bookmark Two (example.net)

Viewing Bookmarks

nb provides multiple ways to view bookmark files, bookmarked content, and bookmarked URLs.

Use nb browse (shortcut: nb b) to browse bookmarks with cached content, [[wiki-style links]], linked #tags, and external links:

❯ nb browse text:formats/markdown/123
❯nb · text : formats / markdown / 123 · ↓ · edit | +
Daring Fireball: Markdown (daringfireball.net)

https://daringfireball.net/projects/markdown/

Related

  • https://en.wikipedia.org/wiki/Markdown

Comments

See also:

  • [[text:formats/org]]
  • [[cli:apps/nb]]

Tags

#markup #plain-text

Content

Daring Fireball: Markdown

Download

Markdown 1.0.1 (18 KB) — 17 Dec 2004

Introduction

Markdown is a text-to-HTML conversion tool for web writers. Markdown allows
you to write using an easy-to-read, easy-to-write plain text format, then
convert it to structurally valid XHTML (or HTML).

For more information, see Browsing.

nb open (shortcut: nb o) opens the bookmarked URL in your system's primary web browser:

# open bookmark by id
nb open 3

# open bookmark 12 in the notebook named "example"
nb open example:12

# open bookmark 12 in the notebook named "example", alternative
nb example:12 open

# open bookmark 12 in the notebook named "example", alternative
nb example:open 12

N.B. To use nb open with WSL, install wslu.

nb peek (shortcut: nb p, alias: nb preview) opens the bookmarked URL in your terminal web browser, such as w3m, Links, or Lynx:

# peek bookmark by id
nb peek 3

# peek bookmark 12 in the notebook named "example"
nb peek example:12

# peek bookmark 12 in the notebook named "example", alternative
nb example:12 peek

# peek bookmark 12 in the notebook named "example", alternative
nb example:peek 12

nb open and nb peek work seamlessly with encrypted bookmarks. nb simply prompts you for the bookmark's password.

nb open and nb peek automatically check whether the URL is still valid. If the page has been removed, nb can check the Internet Archive Wayback Machine for an archived copy.

The preferred terminal web browser can be set using the $BROWSER environment variable, assigned in ~/.bashrc, ~/.zshrc, or similar:

export BROWSER=lynx

When $BROWSER is not set, nb looks for w3m, links, and lynx and uses the first one it finds.

$BROWSER can also be used to easy specify the terminal browser for an individual command:

❯ BROWSER=links nb 12 peek
# opens the URL from bookmark 12 in links

❯ BROWSER=w3m nb 12 peek
# opens the URL from bookmark 12 in w3m

nb show and nb edit can also be used to view and edit bookmark files, which include the cached page converted to Markdown.

nb show <id> --render / nb show <id> -r displays the bookmark file c