Biggest of 3 numbers Shell Programming | os | 4th sem cse | operating system lab | QT

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• Operating System
Exp. No. 4 Biggest of 3 numbers Shell Programming
Aim
To write simple shell scripts using shell programming fundamentals.
The activities of a shell are not restricted to command interpretation alone. The shell
also has rudimentary programming features. Shell programs are stored in a file (with
extension .sh). Shell programs run in interpretive mode. The original UNIX came with the
Bourne shell (sh) and it is universal even today. C shell (csh) and Korn shell (ksh) are also
widely used. Linux offers Bash shell (bash) as a superior alternative to Bourne shell.
C) Biggest of 3 numbers
Biggest - big3.sh
echo -n "Give value for A B and C: "
read a b c
if [ $a -gt $b -a $a -gt $c ]
then
echo "A is the Biggest number"
elif [ $b -gt $c ]
then
echo "B is the Biggest number"
else
echo "C is the Biggest number"
fi
Output
$ sh big3.sh
Give value for A B and C: 4 3 4
C is the Biggest number