Sem 3‎ > ‎OS (Unix) LAB‎ > ‎

D7 : if statement

posted Oct 9, 2011, 5:35 AM by Neil Mathew   [ updated Oct 9, 2011, 6:54 AM ]
It is a control statement used for decision making.


Syntax:

if [ $<variable> <logical operator> $<variable>
then
<statement>
fi


Example: 

if [ $a -gt $b ] && [ $a -gt $c ]
then
echo "$a is the greatest!"
fi

if [ $a -gt $b ] && [ $a -gt $c ]
then
echo "$a is the greatest!"
elif [ $b -gt $a ] && [ $b -gt $c ]; then
echo "$b is the greatest!"
else
echo "$c is the greatest!"
fi


Comments