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Cropping a video file in ffmpeg

Kill all processes that listen to ports begin with 50 (50, 50x, 50xxx,...)
Run netstat as root (via sudo) to get the ID of the process listening on the desired socket. Use awk to 1) match the entry that is the listening socket, 2) matching the exact port (bounded by leading colon and end of column), 3) remove the trailing slash and process name from the last column, and finally 4) use the system(…) command to call kill to terminate the process. Two direct commands, netstat & awk, and one forked call to kill. This does kill the specific port instead of any port that starts with 50. I consider this to be safer.

Test for Weak SSL Ciphers
...if you get a certificate back, the server is accepting weak SSL ciphers

Google text-to-speech in mp3 format

list files recursively by size

Find files with size over 100MB and output with better lay-out

Print entire field if string is detected in column
It searches for a specific value in the specified column and if it finds it it'll print the whole field/row. Similarly, if you don't know what you're looking for exactly but want to exclude something you're already aware of, you can exclude that "something: awk '{ if ($column != "string") print $0}'

Prefix command output with duration for each line
Prefixes each output line with time between it and the previous one.

list files recursively by size

Sum columns from CSV column $COL


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