Shell Programming and Scripting

#!/bin/ksh
echo "ADDITION OF TWO NUMBERS"
echo " "
echo "ENTER FIRST NUMBER"
read no1
echo "ENTER SECOND NUMBER"
read no2
echo " "
no3=expr '$no1 + $no2'
echo "ADDITION OF TWO NUMBERS IS :" $no3


Please recorrect..and help asap

any1 there...

pls HELP

The use of single quotes prevents the values of $no1 and $no2 from being expanded. Furthermore, in order to actually capture output from a command, you have to execute it -- variable=value simply assigns value to variable, it's not executed as a command. What you want is variable=`command` with backticks (ASCII 96, not regular straight quotes) around the command you want to execute.

Code:

no3=`expr "$no1" + "$no2"`

It is against the rules to "bump" your own question, and actually reduces the likelihood that somebody will respond. It is extremely optimistic to expect a reply in less than one hour.

Thanks... a million...!!!

Thanks Era...!!!

Also statement should be like

Code:

let no3=`expr "$no1" + "$no2"`