Collection of Useful Aliases 




  




Here's just few of usefaul aliases you can put in your .*rc file(s). (where
* is your shell such as csh, tcsh, bash and zsh)
Alias is a pseudonym  or shorthand for a command or series of commands, i.e., 
a convenient macro for frequently used command or a series of commands.
Thus you can create as many aliases as you want, both from the simplest 
to the nuttest. The main key is that if you hate to type the line of command(s), 
you should consider either making it into an alias or writing a shell script.



An alias definition affects the current shell execution
environment and the execution environments of the subshells
of the current shell. The alias definition will 
not affect the parent process of the current shell  
nor any utility environment invoked by the shell.



Syntax for defining alias will differ depending on which shell
you're using.  See specific 
section applicable for your shell.  However, it is very easy 
to convert one to another, and folowing is the general syntax;




    

  • C shell category (tcsh and csh)

    


    
$ alias  alias_name  'command'

    

    


  • Bourne shell category (bash, zsh and sh)

    


    
$ alias  alias_name='command'

    















	Alias (all in one line)
	Description


	alias census 'who | wc -l'
	Quick way to determine how many users are currently working on the system


	alias day date+"%A"
	Display day of the week it is


	alias tyme date +"%r"
	Displays the time in AM and PM format


	alias td '( echo; date +"%b %d %r"; cal| tail -7 )'
	Additoinal formatting for calendar display. (or use 'gcal' command)


	alias cd 'cd \!*; set prompt="['`hostname`']<$cwd>"'
	Set command line displays the current path at all time


	alias scat 'cat !* | tr "[A-Z]" "[a-z]"'
	Pipes all the files from the command line into "tr" to convert all uppercase to lowercase letter


	
	alias fspace 'df | sort -n | sed -n 2p'
	Displays the filesystem with the least free space


	
	alias fspace 'df | sort -n -r  | sed -n 2p'
	Displays the filesystem with the most free space


	alias egroup 'grep users /etc/group | sed -n "s/^.*://;s/,$USER//p"'
	Extract the line in /etc/group that contains users associated with the group


	alias p]='ps -Af | egrep -i $USER'
	Displays all current processes associated with you


	alias grub 'pr -t -o6 `grep -l \!:1 \!:2` | sed '\''s/\(.*\)\!:1\(.*\)$/ \*\*\* \1\!:1\2 \*\*\*/'\'' | more'
	Finds a word or phrase and marks the line containing the string with asterisks in the left and right margins. (great for source code debugging)


	alias lr 'ls -ltF !* | head -15'
	List 15 files that were most recently created/modified


	alias spath 'echo $PATH | awk -F: '\''{for(i=1;i<=NF;++i) {print $1}}'\'' | nl'
	Breaks and display the long path listing up into lines


	alias vib 'cp \!:1 \!:1.bak; vi \!:1'
	Automatically make a backup file when you start editing a file using 'vi' editor.  You can substitute 'vi' with your favorite editor


	alias dtt 'dtterm -bg #000000 -fg #00ea0b -fn "*fix*bold*120*75*" &'
	Create a dttermial with black background and a medium-shade green forground color with a fixed bold 12-point font.  You can substitute 'dtterm' with traditional 'xterm'