Adds the stdout (standard output) to the beginning of logfile.txt. Change "command" to whatever command you like, such as 'ls' or 'date', etc. It does this by adding the output to a temporary file, then adding the previous contents of logfile.txt to the temp file, then copying the new contents back to the logfile.txt and removing the temp file.

It will return a ranked list of your most commonly-entered commands using your command history Show Sample Output

Remove all hidden files in a directory excluding current dir . and parent dir .. with .??* that means files with at least two characters.

enlubtsqyuse cat /tmp/out subsequently Show Sample Output

If you don't want to commit files to subversion, and don't want those file to show up when doing an "svn stat", this command is what you need Show Sample Output

Does that count as a win for bzip2? Show Sample Output

Replace "en1" with your network interface (on OS X, usually en0, en1, eth0, etc..) Show Sample Output

This will merge all of the changes from {rev_num} to head on the branch to the current working directory

get cpu info from dmesg

After seeing the command you wish to repeat, just invoke it using the ! syntax.

ncal -e shows the date of Easter this year. ncal -e YYYY shows the date of Easter in a given year. ncal -o works the same way, but for Orthodox dates. Show Sample Output

Shows all linked file and destinations. The 'ls -l' command lists the files in long (1 file per line) format, and the grep command displays only those lines that starts with an l (lower case L) -- a linked file. Updated: Remove reference to hard links because this command does not apply to hard link as others kindly pointed out. Show Sample Output

the -3 show the previous, current, and next month. Show Sample Output

The whatis command displays a short description for the command you list on the command line. It is useful to quickly learn what a command does Show Sample Output

the middle command between the ; and ; is the vi commands that insert that line into the last line of the file, the esc with the carets is literally hitting the escape key, you have to have the smbfs package installed to do it, I use it to access my iTunes music on my mac from my linux PC's with amarok so I can play the music anywhere in the house. among other things, it allows you to access the files on that share from your computer anytime you're on that network.

Allow to read password in a script without showing the password inserted by the user

List files above a given size threshold. Show Sample Output

This is a very powerful command line tool to gather statistics for a Linux system. http://dag.wieers.com/home-made/dstat/ Show Sample Output

Reads a username from Show Sample Output

This command will display only the hosts that are active in the network. Show Sample Output