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List your largest installed packages (on Debian/Ubuntu)
dpigs is in the package debian-goodies (debian/ubuntu)

Replace spaces in filename
This command will replace spaces in filename with underscore, for all file in directory that contain spaces.

Quickly create an alias for changing into the current directory

Coping files, excluding certain files
Preserve file structure when coping and exclude some file o dir patterns

Print a list of all hardlinks in the working directory, recursively
libpurple likes to hardlink files repeatedly. To ignore libpurple, use sed: | sed '/\.\/\.purple/d'

Find files with lines that do not match a pattern
This one would be much faster, as it's only one executed command.

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

convert video format to youtube flv format

Show me just the ip address
Sometimes it's useful to output just the ip address. Or some other information, changing the "ipv4.addresses" in command. The power of awk! Show all possible "greps" with $ nmcli connection show [yourInterfaceNameHere]

find the biggest files recursively, no matter how many
This command will find the biggest files recursively under a certain directory, no matter if they are too many. If you try the regular commands ("find -type f -exec ls -laSr {} +" or "find -type f -print0 | xargs -0 ls -laSr") the sorting won't be correct because of command line arguments limit. This command won't use command line arguments to sort the files and will display the sorted list correctly.


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