Bash Snippets

bash.sh

#bash command line snippets

#more snippets http://www.commandlinefu.com/commands/browse

bash.txt

http://teohm.com/blog/2012/01/04/shortcuts-to-move-faster-in-bash-command-line/

git.sh

#Anonymous Read-only git access
git clone https://github.com/{user_name}/{project_name}.git

#SSH URL - must have ssh key setup
git clone [email protected]:{user_name}/{project_name}.git

github-gist-download.sh

#download and send to std out
#http://unix.stackexchange.com/questions/188000/github-gist-snippet-management

----
#!/bin/sh

# gist-dl.sh: download a Github gist from a specified link to either a
#             standard output (when no second argument passed) or to a
#             specified file (with second argument passed). The first
#             argument is a gist URL and is obligatory

if [ "$1"a = a ]
then
    echo No gist URL passed. Bye
    exit 1
fi

if [ "$2"a = a ]
then
    wget -q -O - "$1"/raw
else
    wget -q -O "$2" "$1"/raw
fi
----

usage:

# display to terminal
./gist-dl.sh https://gist.github.com/kylejohnson/6c6c0ca2d300ffce4bea

# save to file
./gist-dl.sh https://gist.github.com/kylejohnson/6c6c0ca2d300ffce4bea >> file_name.extension

########################################

curl -L https://gist.github.com/westonruter/ea038141e46e017d280b/download > test.zip
unzip test.zip

#This snippet didn't work but got me on the right track. I might be able to figure out a better way to do this.
#
#http://www.commandlinefu.com/commands/view/13647/download-all-files-from-a-gist-without-git
#
#curl -L https://gist.github.com/westonruter/ea038141e46e017d280b/download | tar -xvz --strip-components=1

grep.sh

ls | grep search_term

man.txt

man 3 printf    #display section 3
man -a printf   #display all sections
man -k '^printf'

####

The table below shows the section numbers of the manual followed by the 
types of pages they contain.

   1   Executable programs or shell commands
   2   System calls (functions provided by the kernel)
   3   Library calls (functions within program libraries)
   4   Special files (usually found in /dev)
   5   File formats and conventions eg /etc/passwd
   6   Games
   7   Miscellaneous  (including  macro  packages and conven‐
       tions), e.g. man(7), groff(7)
   8   System administration commands (usually only for root)
   9   Kernel routines [Non standard]

screen.txt

https://hostpresto.com/community/tutorials/how-to-use-screen-on-linux/

system_install.sh

# Install
#
# dtrx - do the right extraction
# git - version control
# ssh - secure shell

apt-get install -y dtrx git ssh

# create .vimrc and disable vi compatibility mode
echo "set nocp" >> .vimrc

test_for_STDIN.sh

#http://unix.stackexchange.com/questions/140522/why-do-some-commands-not-read-from-their-standard-input

strace cat foo 2| grep foo

# execve("/bin/cat", ["cat", "foo"], [/* 44 vars */]) = 0
# open("foo", O_RDONLY) 

strace ls foo 2| grep foo

# execve("/bin/ls", ["ls", "foo"], [/* 44 vars */]) = 0
# stat("foo", {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
# lstat("foo", {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
# write(1, "foo\n", 4foo

wget.sh

#http://askubuntu.com/questions/103623/download-files-from-a-list?answertab=oldest#tab-top

# download a list of files
wget -i text_file

# using cat
cat links.txt | wget -i

# parallel download uses cpu cores
cat urlfile | parallel --gnu "wget {}"

# use a input file to download files without typing the host name
# ie a file of '/folder/file' the '{}' in the command will be replace with the text in the file
cat urlfile | parallel --gnu "wget example1.com{}"
cat urlfile | parallel --gnu "wget example2.com{}"

#http://www.inmotionhosting.com/support/website/wordpress/easily-manage-wordpress-with-wp-cli

# to solve SSL certificate issues
wget --no-check-certificate https://github.com/wp-cli/wp-cli/raw/master/utils/wp-completion.bash

wp-cli.sh

http://www.inmotionhosting.com/support/website/wordpress/easily-manage-wordpress-with-wp-cli
http://wp-cli.org/

xargs.sh

#http://askubuntu.com/questions/103623/download-files-from-a-list?answertab=oldest#tab-top

#download list of files
xargs -i wget -bqc 'http://{}' < download.txt