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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"

list files recursively by size

Draw kernel module dependancy graph.
parse `lsmod' output and pass to `dot' drawing utility then finally pass it to an image viewer

print file without duplicated lines using awk
This create an array 'a' with wole lines. only one occurrence of each line - Not Get lines ++ !

Find files and calculate size of result in shell
Find files and calculate size with stat of result in shell

convert ascii string to hex
just a bit simpler

Query wikipedia over DNS

Concatenate (join) video files
Use mencoder to concatenate (join) multiple video files together.

Quick HTML image gallery
My take on the original: even though I like the other's use of -exec echo, sed just feels more natural. This should also be slightly easier to improve. I expanded this into a script as an exercise, which took about 35 minutes (had to look up some docs): http://bitbucket.org/kniht/nonsense/src/7c1b46488dfc/commandlinefu/quick_image_gallery.py

Factory reset your harddrive. (BE CAREFUL!)


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