Contents

• grp — Introduction
• Examples
• Installation
  • From the npm registry
  • Manual installation
• Usage
• License
  • Acknowledgements
  • npm dependencies
• Changelog

grp — Introduction

grp is a Unix CLI that facilitates breaking text into groups of characters with a variety of options and also offers formatting numbers with digit grouping (thousands separators) based on the active locale.

See the examples below, concise usage information further below, or read the manual.

Examples

  # By default, break a string into space-separated groups of 3 chars.,
  # starting from the right (end).
$ grp 1000000 2000
1 000 000 
2 000

  # Use proper number formatting (separation with locale-specific thousands
  # separators) with -n; example output from the U.S. English locale:
$ grp -n 1000000 1999.99
1,000,000
1,999.99
  
   # Break input into lines of 3 characters each, starting from the left:
$ grp -c 3 -s $'\n' -l abcdefgh
abc
def
gh

   # Insert a '.' between characters:
$ grp -c 1 -s . abcdef
a.b.c.d.e.f

   # Enclose each character in square brackets:
$ grp -c 1 -f '[%s]' abc
[a][b][c]

   # Format text as a US telephone number:
$ echo '6085277865' | grp -f '+1 (%s) %s-%s' -c 3,3,4 
+1 (608) 527-7865

  # Break the input into repeating groups of 2 and 1 char. each:
$ grp -l -c 2,1+ -s / abcdefgh
ab/c/de/f/gh

Installation

Supported platforms

• When installing from the npm registry: Linux and OSX
• When installing manually: any Unix-like platform with Bash

From the npm registry

With Node.js or io.js installed, install the package as follows:

[sudo] npm install grp-cli -g

Note:

• Whether you need sudo depends on how you installed Node.js / io.js and whether you've changed permissions later; if you get an EACCES error, try again with sudo.
• The -g ensures global installation and is needed to put grp in your system's $PATH.

Manual installation

• Download the CLI as grp.
• Make it executable with chmod +x grp.
• Move it or symlink it to a folder in your $PATH, such as /usr/local/bin (OSX) or /usr/bin (Linux).

Usage

Find concise usage information below; for complete documentation, read the manual online or, once installed, run man grp (grp --man if installed manually).

$ grp --help


Format numbers with digit grouping:

    grp -n [-t <term>] [<num>...]

Break text into groups of characters:

    grp [-l | -r] [-c <count>] [-s <sep> | -f <fmt>] [-t <term>] [<txt>...]

Options:

    -n          apply locale-aware digit grouping to input numbers
    -t <term>   terminator to append to each argument's result; default: \n
    -l, -r      start grouping from left / right (default)
    -c <count>  count of chars. per group - may be comma-separated list
    -s <sep>    either: separator to place between groups; default: a space
    -f <fmt>    or: printf-style format string to apply to groups

License

Copyright (c) 2015-2016 Michael Klement mklement0@gmail.com (http://same2u.net), released under the MIT license.

Acknowledgements

This project gratefully depends on the following open-source components, according to the terms of their respective licenses.

npm dependencies below have optional suffixes denoting the type of dependency; the absence of a suffix denotes a required run-time dependency: (D) denotes a development-time-only dependency, (O) an optional dependency, and (P) a peer dependency.

npm dependencies

• doctoc (D)
• json (D)
• marked-man (D)
• replace (D)
• semver (D)
• tap (D)
• urchin (D)

Changelog

Versioning complies with semantic versioning (semver).

• v0.1.4 (2016-06-05):

  • [fix] When using -n to group numbers, the -t option is now respected.
  • [enhancement] Improved detection of invalid numbers when using -n.

• v0.1.3 (2015-09-17):

  • [doc] grp now comes with a man page (invoke with grp --man in case of manual installation); grp -h now just prints concise usage info.

• v0.1.2 (2015-09-15):

  • [dev] Makefile improvements; various other behind-the-scenes tweaks.

• v0.1.1 (2015-06-13):

  • [doc] Read-me fixed and amended.

• v0.1.0 (2015-06-13):

  • Initial release.