Answer Posted / praveen tiwari

Shell script allows the user to perform his day-to-day
tasks sooner.Even a Shell Environment doesnt need a
graphical environment to write a script. So what happens is
it will be more easy for programmer to write shell scripts
on Command line environment , where it doesnt costs more
resources comparable to Graphical environment.

For example : Backup Scripts , Keeping Log files of system.
shell scripts makes you the task easier !!
And to automate the script in Linux we perform cron tasks.
Once cron has to be set. It performs operations automatically

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