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Pull Total Memory Usage In Virtual Environment
This command basically adds up all of the individual instances processes and gives you a grand total for used memory in that instance alone.

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Get memory total from /proc/meminfo in Gigs

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Reset terminal that has been buggered by binary input or similar

Install pip with Proxy
Installs pip packages defining a proxy

intersection between two files

Convert mp3/wav file to asterisk ulaw for music on hold (moh)

Recursive Ownership Change
Changing files ownership in a directory recursivley from a user to another

Print a list of the 30 last modified mp3s sorted by last first


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