Saturday, 14 September 2013

alias command -UNIX


The alias command can be useful if you want to create a 'shortcut' to a command.

An alias will last for the life of the shell session. Regularly used aliases can be set from the shell's configuration file (~/.cshrc or the systemwide /etc/csh.cshrc for csh, or ~/.bashrc or the systemwide /etc/bashrc or /etc/bash.bashrc for bash) so that they will be available upon the start of the corresponding shell session. The alias commands may either be written in the config file directly or sourced from a separate file, typically named .alias (or .alias-bash, .alias-csh, etc., if multiple shells may be used).

The format is alias name='command'
# alias home='cd /home/dave/public_html'
This will create an alias called home which will put you in the /home/dave/public_html directory whenever you type home at the command prompt. You can alias any command you want, and include options for the command.
# alias list='ls -la'
This will create an alias called list, which will use the ls command to print a long-style listing of all files in the current directory (the -l gives a long-style list, and the -a shows all files - including hidden files).

To see a list of aliases set up on your Linux box, just type alias at the prompt.
# alias
alias attrib='chmod'
alias chdir='cd'
alias copy='cp'
alias cp='cp -i'
alias d='dir'
alias del='rm'
alias deltree='rm -r'
alias dir='/bin/ls $LS_OPTIONS --format=vertical'
alias edit='pico'
alias ff='whereis'
alias ls='/bin/ls $LS_OPTIONS'
alias mem='top'
alias move='mv'
alias mv='mv -i'
alias pico='pico -w -z'
alias rm='rm -i'
alias search='grep'
alias v='vdir'
alias vdir='/bin/ls $LS_OPTIONS --format=long'
alias which='type -path'
alias wtf='watch -n 1 w -hs'
alias wth='ps -uxa | more'

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