Commands tagged ruby sorted by votes

Commands tagged ruby (24)

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Convert JSON to YAML

Show Sample Output
This is sample output - yours may be different.
```
Note: you need Ruby 1.9 or better
```
11

ruby -ryaml -rjson -e 'puts YAML.dump(JSON.parse(STDIN.read))' < file.json > file.yaml

wejn · 2013-04-24 07:20:37 0
ruby one-liner to get the current week number
This is sample output - yours may be different.
3

ruby -rdate -e 'p DateTime.now.cweek'

Tekhne · 2009-12-02 02:33:51 1
Generate random valid mac addresses

Ruby version. Also, a perl version: perl -e 'printf("%.2x.",rand(255))for(1..5);printf("%.2x\n",rand(255))'
This is sample output - yours may be different.
3

ruby -e 'puts (1..6).map{"%0.2X"%rand(256)}.join(":")'

eightmillion · 2010-12-08 10:01:31 1
Get the list of local files that changed since their last upload in an S3 bucket

Can be useful to granulary flush files in a CDN after they've been changed in the S3 bucket. Show Sample Output
This is sample output - yours may be different.
```
/css/app_facebook.css
/css/cupertino/jquery-ui-1.7.2.custom.css
/css/fan_css.css
/css/main.css
```
2

changing_assets = `s3cmd sync --dry-run -P -M --exclude=*.php --delete-removed #{preprod_release_dir}/web/ #{s3_bucket} | grep -E 'delete:|upload:' | awk '{print $2}' | sed s_#{preprod_release_dir}/web__`

trivoallan · 2010-05-07 16:03:42 0
Mirror rubygems.org

https://github.com/rubygems/rubygems-mirror/issues/20
This is sample output - yours may be different.
2

ruby -rrubygems/commands/mirror_command -S gem mirror

rubiojr · 2014-04-22 18:03:01 0
Capitalize first letter of each word in a string

Ruby ftw
This is sample output - yours may be different.
1

echo 'fOo BaR' | ruby -e "p STDIN.gets.split.map(&:capitalize).join(' ')"

ekehat · 2011-09-10 06:22:02 0
Capitalize first letter of each word in a string - A ruby alternative

"-n" loops around ; "-e" executes the given quoted string ; "$_" is the current line ; "split" creates an array on white space; each item of the array is "collected" to be then "capitalized" ; the array is "joined" back into a string.
This is sample output - yours may be different.
1

ruby -ne 'puts $_.split.collect(&:capitalize).join(" ")' <<< "pleAse cOuld YOu capiTalizE Me"

Quiryaki · 2011-09-15 01:04:43 0
A one-line web server in Ruby

Here's how to serve a directory in one line of Ruby. Handy for sharing files at a conference, for example.
This is sample output - yours may be different.
1

ruby -rwebrick -e'WEBrick::HTTPServer.new(:Port => 3000, :DocumentRoot => Dir.pwd).start'

boylah · 2013-08-20 10:19:27 0
Extract domain from URl

Extracts 2nd-level domain part (or 3rd level, for co.* or com.*) from the URI's hostname. See sample output. Show Sample Output
This is sample output - yours may be different.
```
# not output itself but example mapping of ARGV[0] to output
http://test.example.com/something/here -> example.com
http://test.example.co.uk/something/else -> example.co.uk
http://test.example.com.cz/something/else -> example.com.cz
```
1

ruby -ruri -e 'u=URI(ARGV[0]).host.split("."); puts u[(u[-2] =~ /^com?$/ ? -3 : -2)..-1].join(".")' http://test.example.com

wejn · 2014-05-25 18:43:44 0
filter rails log to count requests sliced in seconds

Commandline perl filter for, using a production.log from a rails app, display on realtime the count of requests grouped by "seconds to complete" (gross round, but fair enough for an oneliner) :) Show Sample Output
This is sample output - yours may be different.
```
0s: 30
1s: 43
2s: 12
5s: 1

0s: 33
1s: 43
2s: 13
5s: 1
```
0

tail -f production.log | perl -ne 'if (/^Completed.in.(\d+)/){$d = int($1/1000);print "\n";$f{$d}++;for $t (sort(keys(%f))){print $t."s: ".$f{$t}."\n"}}'

theist · 2012-02-23 14:37:33 0
Capistrano deploy specific branch

You can also deploy a specific tag: cap -s tag=my_tag deploy
This is sample output - yours may be different.
0

cap -s branch=my_branch deploy

carlzulauf · 2012-05-23 06:54:21 0
Add current directory to Ruby load path
This is sample output - yours may be different.
0

echo "$: << '.'" >> $IRBRC

emmasteimann · 2012-10-05 16:26:27 0
Use Ruby version permanently

Ruby Version Manager (RVM) - https://rvm.io/ Show Sample Output
This is sample output - yours may be different.
```
Using /Users/weng/.rvm/gems/ruby-1.9.3-p448
```
0

rvm --default use ruby-1.9.3

99RedBalloons · 2013-10-04 02:43:59 0
Search ruby-files with non-ascii character, but without encoding directive

Show Sample Output
This is sample output - yours may be different.
```
app/models/foo.rb
```
0

grep -l --include '*.rb' --include '*.rake' '^[^#]*[^a-zA-Z0-9[:punct:][:space:]]' -R . | xargs -L1 awk '!/encoding/ && NR < 2 { print FILENAME }'

numbata · 2013-11-13 21:41:42 0
Find supported dependency manager manifests

List all dependencies manifests so you can install them. In a scenario where you want to deploy a number of web applications and run their dependency managers, how could you run all of them in a systematic order. One of the complexity is to ensure you get only your own top level dependencies. That way, you don recursively call development dependencies of your own dependencies. Otherwise you might end up discovering dependency management manifests that are already been pulled by your own projects. # Using this command This command helps me find them and I can then run what?s required to pull them from their respective sources. This command assumes the following: 1. Your code checkouts are in a flat repository layout (i.e. not nested). 2. Finds manifests for: - NPM (nodejs), - Composer (php), - bower, - requirements.txt (Python), and - git submodules Show Sample Output
This is sample output - yours may be different.
```
/srv/code/component1/repo/requirements.txt
/srv/code/component2/repo/generator/package.json
/srv/code/component3/repo/package.json
/srv/code/component4/repo/mediawiki/.gitmodules
/srv/code/component5/repo/bower.json
/srv/code/component5/repo/package.json
/srv/code/component5/repo/Gemfile
/srv/code/component6/repo/generator/package.json
/srv/code/component7/repo/.gitmodules
/srv/code/component8/repo/bower.json
/srv/code/component8/repo/.gitmodules
```
0

find /srv/code -maxdepth 4 -type f -regex ".*$\(package\|composer|npm\\|bower$\.json\|Gemfile\|requirements\.txt\\|\.gitmodules\)"

renoirb · 2014-11-28 16:34:35 0
Check Rubocop offenses in your working branch

Assumes you are in the branch you want to run the check on. Sub 'develop' for whatever branch you commonly submit PRs to. Show Sample Output
This is sample output - yours may be different.
```
== spec/support/stripe_endpoint_helpers.rb ==
C:  6: 81: Line is too long. [82/80]
C:163:114: Space inside square brackets detected.
W:231: 25: Unused block argument - value. If it's necessary, use _ or _value as an argument name to indicate that it won't be used.

37 files inspected, 3 offenses detected
```
0

git rev-parse develop | xargs git diff --name-only | grep -E '^(app|lib|spec).*\.rb' | xargs rubocop -f simple

vinniefranco · 2015-01-21 08:12:18 0
Url Encode

Similar to the perl version. Show Sample Output
This is sample output - yours may be different.
```
$ echo 'this & that' | ruby -nr 'uri' -e 'puts URI.escape $_.chomp'
this%20&%20that
```
0

ruby -nr 'uri' -e 'puts URI.escape $_.chomp'

sagittarian · 2015-04-18 06:53:39 0
Rename selected files in the directory using ruby
This is sample output - yours may be different.
0

ruby -e 'Dir.glob("*.txt") { |f| File.rename(f,f.gsub("_t","")) }'

swarzynski · 2015-11-19 09:59:47 0
sort of automaticly install gems that are depend

When bundle install sucks ...This runs isuckat_ruby.rb and when stderror matches find gem ' it will gem install what ever is missing ... Show Sample Output
This is sample output - yours may be different.
```
Could not find gem 'metasploit-payloads (= 1.1.13) ruby', which is required by gem 'metasploit-framework (>= 0) ruby', in any of the sources.
```
0

gem install `ruby ./isuckat_ruby.rb 2>&1 | sed -e 's/.*find gem .//g' -e 's/ .*//g' | head -n 1`

operat0r · 2016-08-03 19:41:27 0
ruby one-liner to get the current week number
This is sample output - yours may be different.
-1

ruby -e 'require "date"; puts DateTime.now.cweek'

imsaar · 2009-12-01 20:59:18 0
OSX Terminal helper with tab completion, ssh tunneling, and now screen re-attach

http://github.com/c3w/ash . a Ruby SSH helper script . reads a JSON config file to read host, FQDN, user, port, tunnel options . changes OSX Terminal profiles based on host 'type' USAGE: put 'ash' ruby script in your PATH modify and copy ashrc-dist to ~/.ashrc configure OSX Terminal profiles, such as "webserver", "development", etc run "ash myhostname" and away you go! v.2 will re-attach to a 'screen' named in your ~/.ashrc Show Sample Output
This is sample output - yours may be different.
```
$
```
-1

ash prod<tab>

c3w · 2012-05-12 19:51:02 0

Shows a list of all installed cows saying a fortune. Also lists the cows names. Pic your favorite cow! Needs cowsay, fortune and ruby installed. The path only applies to OS X with cowsay installed using homebrew. On Linux it might be /usr/share/cowsay/cows/ or similar. Uses ruby just because. Show Sample Output

-1

echo 'Dir.foreach("/usr/local/Cellar/cowsay/3.03/share/cows") {|cow| puts cow; system "fortune | cowsay -f /usr/local/Cellar/cowsay/3.03/share/cows/#{cow}" }' | ruby

orkoden · 2013-04-15 12:27:38 0

Randomize lines (opposite of | sort)
This is sample output - yours may be different.
-1

ls -1 | xargs ruby -e'puts ARGV.shuffle'

jacaetevha · 2014-01-17 17:42:08 0
delete files older than 1 month in a directory
This is sample output - yours may be different.
-3

require 'time';backup_dir = '/path';Dir.glob(backup_dir+"/*.sql").each{ |f| filetime = Time.parse(`mdls -name kMDItemContentCreationDate -raw #{f}`);monthago = Time.now - (30 * 60 * 60 * 24);`rm #{f}` if filetime < monthago }

juliend2 · 2011-04-01 00:30:05 2

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Find and copy scattered mp3 files into one directory

I used this command to recursively gather all mp3 files that were previously imported into their own directories (sorted by band name) in Songbird.

Generate a list of items from a couple of items lists A and B, getting (B - A ) set

ItemsListtoAvoid (A) could be a list of files with a special characteristic to exclude. It can be a result of previous processing list, ex. a list of files containing a special string. AlItemsList.txt (B) Is a complete list of items including some or all items in A. $Difference is saved in ItemsDifference.txt

Octal ls

Do ls with permissions written in octal form.

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

find all writable (by user) files in a directory tree (use 4 for readable, 1 for executable)

Rename files in batch

Fix the vi zsh bindings on ubuntu

Use sed to comment out any up/down bindings in zsh

Rename files in batch

save command output to image

It's just because the original command was not working on version's 6.7.7-10.

Rename files to be all in CAPITALS

Simple bash/ksh/sh command to rename all files from lower to upper case. If you want to do other stuff you can change the tr command to a sed or awk... and/or change mv to cp....

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Commands tagged ruby (24)

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