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Function to output an ASCII character given its decimal equivalent
I've corrected the function. My octal conversion formula was completely wrong. Thanks to pgas at http://mywiki.wooledge.org/BashFAQ/071 for setting me straight. The new function is from pgas and is very fast.

Rename file to same name plus datestamp of last modification.
Note that the -i will not help in a script. Proper error checking is required.

Convert every eps in a directory to pdf
Converts every *.eps file to a *.pdf file

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

Find which service was used by which port number

Install pip with Proxy
Installs pip packages defining a proxy

download and unpack tarball without leaving it sitting on your hard drive

Automaticly cd into directory
Makes bash-4.x like zsh. Automatic cd into a directory if a command with that name doesnt exists. Ready for your ~/.bashrc file

Plaintext credentials sniffing with tcpdump and grep
Simple TCPDUMP grepping for common unsafe protocols (HTTP, POP3, SMTP, FTP)


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