Introduction to UNIX shell

Unix shell is command line interpreter. It processes one command or group of commands on command line when clicking Enter button.
There are several UNIX shell programs families. . The most important are the Bash shell, the Korn shell, and the TC shell. The shell families were developed for different purposes.

To create a UNIX script , use VI editor

Shell script begins with (#!) . #!/bin/ksh at the begining is used to invoke Korn Shell

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