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drop first column of output by piping to this
An advantage is that this doesn't modify remained string at all. One can change {0,1} with {0,n} to drop several columns

Search recursively to find a word or phrase in certain file types, such as C code
ack search recursively by default

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Quick syntax highlighting with multiple output formats
You can specify various output formats, theme styles, etc. $ python -m pygments -o source.png source.py $ python -m pygments -o source.rtf source.py Check available output formats, styles, etc.: $ python -m pygments -L Find pygments module here: http://pygments.org/

cat ~/.ssh/id_rsa.pub | ssh user@site.com "cat - >> ~/.ssh/authorized_keys"
You'll want to use this for passwordless logins. Same as ssh-copy-id, if you don't have it on your system.

Exclude .svn, .git and other VCS junk for a pristine tarball
~$ tar --version tar (GNU tar) 1.20

Resume scp of a big file
It can resume a failed secure copy ( usefull when you transfer big files like db dumps through vpn ) using rsync. It requires rsync installed in both hosts. rsync --partial --progress --rsh=ssh $file_source $user@$host:$destination_file local -> remote or rsync --partial --progress --rsh=ssh $user@$host:$remote_file $destination_file remote -> local

Test for Weak SSL Ciphers
...if you get a certificate back, the server is accepting weak SSL ciphers

send DD a signal to print its progress
Sends the "USR1" signal every 1 second (-n 1) to a process called exactly "dd". The signal in some systems can be INFO or SIGINFO ... look at the signals list in: man kill

ROT13 using the tr command


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