The “==” operator is used to check the equality of two bash strings. In the example below, two strings are defined: strng1 and strng2. Also, you can check Bash strings for equality using the string value; an example is below. Comparison with “!=” operators The “!=” operator ...
Example 2: Check if strings are not equal in Bash Instead of checking the quality, let’s do the opposite and check the inequality. Bash also provides the negation operator so that you can easily use “if not equal” condition in shell scripts. if [ "$string1" != "Not MyString" ] ...
string1 = string2 and string1 == string2 - The equality operator returns true if the operands are equal. Use the = operator with the test [ command. Use the == operator with the [[ command for pattern matching. string1 != string2 - The inequality operator returns true if the operands...
let's take a look at the "if" statement used above. In it, we have a boolean expression. In bash, the "=" comparison operator checks for string equality. In bash, all boolean expressions are enclosed in square brackets. But what does the boolean expression actually test for?
and elif. Then we'll look at a few of the "primary" operators you can leverage in a conditional statement such as = for string equality, -eq for numeric equality, and -e to check if a file exists. After that, we'll use conditional statements to create a function that asserts that ...
and elif. Then we'll look at a few of the "primary" operators you can leverage in a conditional statement such as = for string equality, -eq for numeric equality, and -e to check if a file exists. After that, we'll use conditional statements to create a function that asserts that ...
Equality and Inequality To check if two strings are equal, use == operator ? Open Compiler string1="Hello, world!"string2="Hello, world!"if["$string1"=="$string2"];then echo"Strings are equal"elseecho"Strings are not equal"fi
-z=> Check if string is NULL.-n=> Check if string is not NULL.===> Check for string equality.!==> Check for string inequality. To check if the string is NULL or not NULL, use the-zand-nflag. I am using the compact conditional statement syntax to evaluate the condition. ...
Lastly, the == operator is for checking string values for equality. ./whatIf.sh Equal! Not equal! Not equal! The if statement is used extensively in bash scripts, which means that you are going to see it many times in this guide. Loops The bash shell has support for loops, which ...
Note:Bash also allows==to be used for equality with[, but this is not the standard usage. Bash Strings Comparison Examples Different operators offer different ways of comparing strings, depending on the requirement. Below are examples of common ways of using comparison operators for string comparis...