https://github.com/grosser/pru

Pipeable Ruby - forget about grep / sed / awk / wc ... use pure, readable Ruby!
https://github.com/grosser/pru

Last synced: about 17 hours ago
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Pipeable Ruby - forget about grep / sed / awk / wc ... use pure, readable Ruby!

• Host: GitHub
• URL: https://github.com/grosser/pru
• Owner: grosser
• Created: 2011-04-15T17:34:09.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2021-11-25T02:58:17.000Z (about 3 years ago)
• Last Synced: 2024-12-06T11:05:40.168Z (6 days ago)
• Language: Ruby
• Homepage:
• Size: 56.6 KB
• Stars: 576
• Watchers: 15
• Forks: 25
• Open Issues: 1
• Metadata Files:
  • Readme: Readme.md

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• my-awesome-github-stars - grosser/pru - Pipeable Ruby - forget about grep / sed / awk / wc ... use pure, readable Ruby! (Ruby)

README

        
Pipeable Ruby - forget about grep / sed / awk / wc ... use pure, readable Ruby!

## Map - each line

    # count letters of each line

    ls -1 | pru size

    # select lines longer than five letters

    ls -1 | pru 'size > 5'

    # 2nd to last character

    ls -1 | pru self[2..-1]

## Reduce - all lines as Array

    # count lines

    ls -1 | pru -r size

    # are the more than five lines?

    ls -1 | pru -r 'size > 5'

    # get 2nd to last line

    ls -1 | pru -r self[2..-1]

## Map and Reduce

    # count letters in each line, then sum

    ls -1 | pru size sum

    # select lines longer than 5 letters, then join with commas

    ls -1 | pru 'size > 5' 'join(",")'

    

## Inplace edit

    pru -i Gemfile 'sub /ruby/, "foo"'

## Install

```Bash

gem install pru

```

or standalone

```Bash

curl https://rubinjam.herokuapp.com/pack/pru > pru && chmod +x pru

./pru -v

```

## Options

    -r, --reduce CODE                reduce via CODE

    -I, --libdir DIR                 Add DIR to load path

        --require LIB                Require LIB (also comma-separated)

    -i, --inplace-edit FILE          Edit FILE inplace

    -h, --help                       Show this.

    -v, --version                    Show Version

## Examples

    # grep --- all lines including foo

    ls -al | grep foo

    ls -al | pru /foo/

    # grep --- all lines including current date

    ls -al | grep $(date +"%Y-%m-%d")

    ls -al | pru 'include?(Time.now.strftime("%Y-%m-%d"))'

    # awk --- return second item

    ls -al | awk '{print $2}'

    ls -al | pru 'split(" ")[1]'

    # awk --- count and average of all integers on second position

    ls -al | awk '{ s += $2; } END {print "average" ,int(s/NR);print "count ",int(NR)}'

    ls -al | pru 'split(" ")[1]' '"average #{mean(&:to_i)}\ncount #{size}"'

    # wc --- count lines

    ls -al | wc -l

    ls -al | pru --reduce 'size'

    # sed -- replace a 5 with five

    ls -al | sed 's/5/five/'

    ls -al | pru 'gsub(/5/,"five")'

    # every second line

    ls -al | pru 'i % 2 == 0'

    # paste-friendly mime-types

    curl https://raw.github.com/mattetti/mimetype-fu/master/lib/mime_types.yml | grep image | pru 'gsub(/(.*): (.*)/, %{"\\1" => "\\2",})'

    # number of files by date:

    ls -al | pru 'split(" ")[5]' 'grouped.sort_by{|d, f| -1 * f.size }.map{|d, f| "#{d} : #{f.size}" }'

    ls -al | pru 'split(" ")[5]' 'counted'

    # quotes inside a string

    something | pru 'include?(%{"string"})'

    # Find a gem version matching a requirement e.g. ~> 1.0.0

    curl http://rubygems.org/api/v1/versions/bundler | pru --require json 'JSON.parse(self).map{|g|g["number"]}.find{|v| Gem::Requirement.new("~>1.0.1").satisfied_by? Gem::Version.new(v) }'

    # List your local repos by watchers

    ls | pru '[self, `curl --silent "https://github.com/grosser/#{self}"`.match(/
 #{i}" }'


    # Cleanup strange whitespace in a file

    pru -i Rakefile 'gsub(/\r\n/,"\n").gsub(/\t/,"  ")'

    # Removing certain lines from output vs ruby -npe

    ls -al | ruby -npe 'next unless $_.split(" ")[1].to_i > 3'

    ls -al | pru 'split(" ")[1].to_i > 3'

Gemsets

=======

Working with rvm / many gemsets -> only install once

(or use standalone binary)

    rvm 2.7.7 exec gem install pru

    echo 'alias pru="rvm 2.7.2 exec pru"' >> ~/.bash_profile

[Contributors](http://github.com/grosser/pru/contributors)

=======

 - [John Hobbs](http://github.com/jmhobbs)

 - [Vasiliy Ermolovich](http://github.com/nashby)

 - [Jens Wille](http://blackwinter.de)

 - [SixArm](https://github.com/SixArm)

[Michael Grosser](http://grosser.it)


[email protected]


License: MIT


[![Build Status](https://travis-ci.org/grosser/pru.svg?branch=master)](https://travis-ci.org/grosser/pru)