[Shell] cmdline-fu, bropages, cheat でコマンドラインツールの使用例を調べる

man 以外の情報を CLI から取得する。

[markdown]
## Installation

まとめてインストールします。

“`prettyprinted
% gem install cmdline-fu bropages cheat
“`

## cmdline-fu

ワンライナーを投稿・共有しているサイト。
`cmdline-fu matching` で対象を検索できる。

> * [All commands | commandlinefu.com](http://www.commandlinefu.com/commands/browse)

“`bash
% cmdline-fu matching find
true
:
# Recursively remove all empty directories
find . -type d -empty -delete
# Find files that have been modified on your system in the past 60 minutes
sudo find / -mmin 60 -type f
# Recursively change permissions on files, leave directories alone.
find ./ -type f -exec chmod 644 {} \;
# Search recursively to find a word or phrase in certain file types, such as C code
find . -name “*.[ch]” -exec grep -i -H “search pharse” {} \;
# find files in a date range
find . -type f -newermt “2010-01-01” ! -newermt “2010-06-01”
“`

## bropages

command line のサンプルを表示する。
`bro` で検索できる。

> * [bro: just get to the point!](http://bropages.org/)

“`bash
% bro find
21 entries for find — submit your own example with “bro add find”
# Executes a command on the files and folders matching a given pattern, in this case, output the last lines of each .foo file in the current folder and subfolders.
find . -name “*.foo” -exec tail {} \;
bro thanks to upvote (55)
bro …no to downvote (0)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
# Outputs all the file names/paths that start with the name “Casey”. Searches recursively starting from my current directory (.)
# Throws out any error output by sending it to /dev/null
find . -name “Casey*” 2>/dev/null
bro thanks 2 to upvote (33)
bro …no 2 to downvote (0)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
# Finds all files in and under the current directory that contain ‘foo’ in their name
find . -iname ‘*foo*’
bro thanks 3 to upvote (26)
bro …no 3 to downvote (1)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
“`

## cheat

チートシートを表示する。
`cheat` で検索できる。

> * [$ command line ruby cheat sheets](http://cheat.errtheblog.com/)

“`bash
% cheat find
find:
To search current directory and sub directories for a specific file:
$ find . -name “rc.conf” -print
Same, but case insensitive:
$ find . -iname “rc.conf” -print
Search for both mpg & avi:
$ find . -iname ‘*.mpg’ -o -iname ‘*.avi’
Same, but files only:
$ find . -type f -name “rc.conf” -print
“`

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