Commands by menachem (2)

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Install Linux Kernel Headers on Debian-based systems
Install the Linux kernel headers for currently running kernel version on Debian-based systems via apt-get

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

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

Sort installed rpms in alphabetic order with their size.

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

Convert text to uppercase
Usage: upper [STRING]...

Watch the progress of 'dd'
Pressing ctrl-t will display the progress

Find the process you are looking for minus the grepped one
As an alternative to using an additional grep -v grep you can use a simple regular expression in the search pattern (first letter is something out of the single letter list ;-)) to drop the grep command itself.

Determine space taken by files of certain type
Just how much space are those zillions of database logs taking up ? How much will you gain on a compression rate of say 80% ? This little line gives you a good start for your calculations.


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