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Resample a WAV file with sox
Change the sample rate with sox, the swiss army knife of sound processing.

command line calculator
simple function , floating point number is supported.

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"

See system users

finding more large files

Show local/public IP adresses with or without interface argument using a shell function for Linux and MacOsX
Like the tiltle said, you can use an argument too ( the interface ) $ MyIps eth0 will show only the IP of this interface and the public IP ( tested with Linux ) You can add that function in ~/.bashrc, then $ . ~/.bashrc Now you are ready to call this function in all your terms...

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"

rsync + find
use find with rsync

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"

Clean up the garbage an accidental unzipping makes
List out all the names from the zip file and pass it to xargs utility to delete each one of them


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