Commands using ls (517)

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Safely remove old unused kernels in Ubuntu/Debian
Removes piling kernels from /boot, save the current one. This command DOES NOT remove the 'linux-image-generic' package, so you'll continue getting kernel updates

shutdown pc in a 4 hours
you may as well use shutdown -h 18:32 to shutdown your machine at 18:32.

List .log files open by a pid
Uses lsof to display the full path of ".log" files opened by a specified PID.

To find the count of each open file on a system (that supports losf)

Delete empty, 24-hours-old directories recursively, without consider hidden directories

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

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"

umount all nfs mounts on machine

Get an authorization code from Google
This is a basis for other Google API commands.

Generate a shortened URL with is.gd
Check the API. You shouldn't need sed. The print-newline at the end is to prevent zsh from inserting a % after the end-of-output. Also works with http://v.gd


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