From Linux Shell Scripting Tutorial - A Beginner's handbook
The test command can perform various numeric comparison using the following operators:
| Operator
| Syntax
| Description
| Example
|
| eq
| INTEGER1 -eq INTEGER2
| INTEGER1 is equal to INTEGER2
|
#!/bin/bash
read -p "Please enter and confirm number 10 via keyboard : " n
if test $n -eq 10
then
echo "Thanks for entering 10 number."
fi
|
| ge
| INTEGER1 -ge INTEGER2
| INTEGER1 is greater than or equal to INTEGER2
|
#!/bin/bash
read -p "Enter number >= 10 : " n
if test $n -ge 10
then
echo "$n is greater than or equal to 10"
fi
|
| gt
| INTEGER1 -gt INTEGER2
| INTEGER1 is greater than INTEGER2
|
#!/bin/bash
read -p "Enter number > 20 : " n
if test $n -gt 20
then
echo "$n is greater than 20."
fi
|
| le
| INTEGER1 -le INTEGER2
| INTEGER1 is less than or equal to INTEGER2
|
#!/bin/bash
read -p "Enter backup level : " n
if test $n -le 6
then
echo "Incremental backup requested."
fi
if test $n -eq 7
then
echo "Full backup requested."
fi
|
| lt
| INTEGER1 -lt INTEGER2
| INTEGER1 is less than INTEGER2
|
#!/bin/bash
read -p "Do not enter negative number here : " n
if test $n -lt 0
then
echo "Dam! you entered negative number!!"
fi
|
| ne
| INTEGER1 -ne INTEGER2
| INTEGER1 is not equal to INTEGER2
|
#!/bin/bash
read -p "Do not enter -1 number here : " n
if test $n -ne -1
then
echo "Thanks for not entering -1."
fi
|
