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Just copy and paste the code in your terminal.
Note : sudo apt-get for debian versions , change as per your requirement .
Source : www.h3manth.com
-f file
-v invert-match : invert the sense of matching, to select non matching lines
this lets you edit a crontab file (which may be used as a backup as well) and insert this into your crontab. this way is especially handy, when multiple users are working on one account (e.g. root)
if you cd into a directory then cd into another directory somewhere else then you run the cd - command you will go to the previous directory you was in!! To go back to the other directory just run it again. So if you are working in 2 different directories then this is the perfect command for you.
just change SELINUX=enforcing to SELINUX=permissive, and you're done. Reboot if you want to prove it.
This is a nice way to kill processes.. the example here is for firefox!!! substitute firefox for whatever the process name is...
Allow to launch nc like a daemon, in background until you still stop it.
(like this command: http://www.commandlinefu.com/commands/view/9978 )
For send script or commands from the client to the server, use nc too, like that :
cat script.sh | nc server 1025
echo "service openvpn restart" | nc server 1025
The loop's inside doesn't do anything, but we can add echo -e "\nCommand received\n" .
This decompresses the file and sends the output to STDOUT so it can be grepped. A good one to put in loops for searching directories of gzipped files, such as man pages.