Commands tagged dpkg-query (8)

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Creates Solaris alternate boot environment on another zpool.
PS: 'lustatus' gives the list of all alternate boot environments.

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"

Show the 20 most CPU/Memory hungry processes
This command will show the 20 processes using the most CPU time (hungriest at the bottom). You can see the 20 most memory intensive processes (hungriest at the bottom) by running: $ ps aux | sort +3n | tail -20 Or, run both: $ echo "CPU:" && ps aux | sort +2n | tail -20 && echo "Memory:" && ps aux | sort +3n | tail -20

recursive search and replace old with new string, inside files
Using -Z with grep and -0 with xargs handles file names with spaces and special characters.

Compress blank lines

Cleanup firefox's database.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

USE WITH CAUTION: perminately delete old kernel packages

List pr. command in megabytes sum of deleted files that are still in use and therefore consumes diskspace

burn a isofile to cd or dvd
cdrecord must be installed. usefull alias: $alias burniso='cdrecord -v dev=/dev/cdrom' now iso burning is like. $burniso image.iso


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