Commands by kalylnmo4 (0)

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    bash: commands not found

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easily find megabyte eating files or directories
sorts the files by integer megabytes, which should be enough to (interactively) find the space wasters. Now you can $ dush for the above output, $ dush -n 3 for only the 3 biggest files and so on. It's always a good idea to have this line in your .profile or .bashrc

Find the package that installed a command

use vi key bindings at the command line

swap the java version being used
You have openjdk and sun java installed. Many of your java plugins will not work properly. Something called IcedTea (the java web plugin) keeps crashing. Run this and select sun java to use sun java.

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 a line from a file using sed (useful for updating known SSH server keys when they change)
For example, to remove line 5 from foo, type: vi +5d +wq foo

list block devices
Shows all block devices in a tree with descruptions of what they are.

Batch convert PNG to JPEG
Convert all PNG images in directory to JPEG using ImageMagick, and delete the old PNG images.

Get last sleep time on a Mac

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

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