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Get full directory path of a script regardless of where it is run from
Also resolves symlinks, showing the full path of the link target

Solaris get PID socket
Command line to get which PID is opening a socket on IP and PORT. Only useful under Solaris.

Install pip with Proxy
Installs pip packages defining a proxy

Get the current svn branch/tag (Good for PS1/PROMPT_COMMAND cases)
uses just one sed

Clone or rescue a block device
If you use the logfile feature of ddrescue, the data is rescued very efficiently (only the needed blocks are read). Also you can interrupt the rescue at any time and resume it later at the same point. http://www.gnu.org/software/ddrescue/ddrescue.html

Create a backdoor on a machine to allow remote connection to bash
My netcat (nc-1.84-10.fc6) doesn't have the -e option, so I have to do it like this. Of course, instead of bash, you can use any executable, including scripts.

List NYC startups that are hiring

Check if a string is into a variable
Returns true (0) if the string is into $var, or false (1) if not.

list the top 15 folders by decreasing size in MB
list the top 15 folders by decreasing size in MB

Share a 'screen'-session
Ater person A starts his screen-session with `screen`, person B can attach to the srceen of person A with `screen -x`. Good to know, if you need or give support from/to others.

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