A shell script is a computer program designed to be run by the Unix shell, a command-line interpreter. The various dialects of shell scripts are considered to be scripting languages. Typical operations performed by shell scripts include file manipulation, program execution, and printing text. A script that sets up the environment, runs the program, and does any necessary cleanup, logging, etc. is called a wrapper.
In this post, we will write a shell script to accept a file name as input and translate the contents of that file in lowercase.
line 1: filename
The following is the shell script to accept a file name as input and translate the contents of that file in lowercase:
echo Enter file name read file a=`cat $file` echo $a | tr '[:upper:]' '[:lower:]' > $file
$ Enter file name $ test
Let us know in the comments if you are having any questions regarding this shell script.
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