Commands by idemal (1)

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Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Remove Suspend option from XFCE logoff dialog

Play all files in the directory using MPlayer
Skip forward and back using the < and > keys. Display the file title with I.

Move all but the newest 100 emails to a gzipped archive

Remove all unused kernels with apt-get
Remove old kernels (*-generic and *-generic-pae) via apt-get on debian/ubuntu based systems. Tested on ubuntu 10.04 - 12.04.

show the date every rpm was installed
the newest rpms are at the top; individual packages can also be queried this way: rpm --last -q package

Replace duplicate files by hardlinks

Find the package that installed a command

Join a folder full of split files
If you use newsgroups then you'll have come across split files before. Joining together a whole batch of them can be a pain so this will do the whole folder in one.

Sort dotted quads
Sort a list of IPV4 addresses in numerical order. Great as a filter, or within vim using !}


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