Thursday, February 9, 2012

Unix Tools - The read Statement

Use to get input (data from user) from keyboard and store (data) to variable. Syntax:
read variable1, variable2,...variableN

Following script first ask user, name and then waits to enter name from the user via keyboard. Then user enters name from keyboard (after giving name you have to press ENTER key) and entered name through keyboard is stored (assigned) to variable fname.
$ vi sayH
#
#Script to read your name from key-board #
echo "Your first name please:"
read fname
echo "Hello $fname, Lets be friend!"

Run it as follows:
$ chmod 755 sayH
$ ./sayH
Your first name please: vivek Hello vivek, Lets be friend!

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