How To bash compare numbers

[root@rhel1 ~]# cat test2.sh
#!/bin/bash
#program for -gt comparing
b=100
echo "enter value grater than 100"
read a
if [ $a -gt $b ]
then
echo "Very Good"
else
echo "You are naughty"
fi

4.  -le operator

This bash compare numbers operator will check the values for less than or equal . If its less than or equal then it return value 0.

#program for -le comparing
b=5
echo "enter value less than or equal to 5"
read a
if [ $a -le $b ]
then
echo "You like weekdays"
else
echo "You are week end fan!!!!"
fi
[root@rhel1 ~]#

5.  -lt operator

This bash compare numbers operator will check the values for less than. If it’s less than, then it return value 0.

[root@rhel1 ~]# cat test4.sh
#!/bin/bash
#program for -lt comparing
b=0
echo "enter number with minus sign"
read a
if [ $a -lt $b ]
then
echo "Oho You are honest!!!"
else
echo "Go Away"
fi
[root@rhel1 ~]#

6.  -ne operator

This bash compare numbers operator will check the values are not equal. If its not equal it return value 0.

[root@rhel1 ~]# cat test5.sh
#!/bin/bash
#program for -ne comparing
b=0
echo "Please enter any non zero value"
read a
if [ $a -ne $b ]
then
echo "Very Nice!!!"
else
echo "Oh My god You have entered Zero value"
fi
[root@rhel1 ~]#

Execution:

[root@rhel1 ~]# sh test5.sh
Please enter any non zero value
2
Very Nice!!!
[root@rhel1 ~]# sh test5.sh
Please enter any non zero value
0
Oh My god You have entered Zero value

To Know more about for loops,

To know more about while loops.