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 07:20:37 128
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 34
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 8
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 4
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 9
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 4
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 6
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 12
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 7
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 4
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 4
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 6
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 02:43:59 200
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 7
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 9
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 8
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 9
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 14
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 13
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 4
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 9

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 11

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 8
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 6

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Clean all .pyc files from current project. It cleans all the files recursively.

Count accesses per domain

count the times a domain appears on a file which lines are URLs in the form http://domain/resource.

Binary difference of two files

Upload/download newer version of any file with less size and high speed. To remake the new file use $bspatch

back up your commandlinefu contributed commands

Use `zless` to read the content of your *rss.gz file: $ zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz

Replace the content of an XML element

Replaces "650" with "999" in simple.xml. xml used - http://www.w3schools.com/xml/simple.xml

view the system memory in clear text

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?

Lists unambigously names of all xml elements used in files in current directory

This set of commands was very convenient for me when I was preparing some xml files for typesetting a book. I wanted to check what styles I had to prepare but coudn't remember all tags that I used. This one saved me from error-prone browsing of all my files. It should be also useful if one tries to process xml files with xsl, when using own xml application.

Get a qrcode for a given string

Check command history, but avoid running it

!whatever will search your command history and execute the first command that matches 'whatever'. If you don't feel safe doing this put :p on the end to print without executing. Recommended when running as superuser.

Find usb device

I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

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Commands tagged ruby (24)

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