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Print permanent subtitles on a video (international edition :) )
If it's Hebrew [most probably all RTL languages. Comments?], add -flip-hebrew and -noflip-hebrew-commas to the mplayer switches: $ transcode -i myvideo.avi -x mplayer="-utf8 -flip-hebrew -noflip-hebrew-commas -sub myvideo.srt" -o myvideo_subtitled.avi -y xvid

Change host name
With sed you can replace strings on the fly.

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"

Check Ram Speed and Type in Linux
from http://maysayadkaba.blogspot.com/2008/08/linux-check-ram-speed-and-type.html

exit if another instance is running
runs only one instance.

Brute force discover
Show the number of failed tries of login per account. If the user does not exist it is marked with *.

Unzip 25 zip files files at once

macOS: Save disk space by moving apps to external drives
Because Mac app bundles contain everything in one place, it makes running them from anywhere, including from a device such as a USB flash drive or external HDD, possible. So if your Mac has a mere 256GB of storage (as mine does), you can free up large quantities of disk space by storing apps like, say, Xcode on external devices.

Run the last command as root - (Open)Solaris version with RBAC

list files recursively by size


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