SED is a very powerful utility which allows find and replace/insert text functionality. It should be used with Caution and is recommended to use dry-run before committing the changes. Below are the various commands for text manipulation.

Note: \n = for newline and \t = for TAB space and For dry run just remove "-i" from the command

 Find the pattern and Insert text AFTER

# sed -i 's/.*search 1st Line.*/&\nInsert 2nd line/' file1

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Its possible to run a script via Alias command. All you need is to modify the .bashrc and then source the script in the required user profile. Alias commands are very useful when it comes to running shortened versions of commands or a complex script to be run using just a single line of command. Currently I use this to run 2 of my custom scripts for waking up a ESXi server via WOL (Wake-ON-LAN).

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