Example 1: Check if two strings are equal If you want to check if two strings are equal, here’s an example: #!/bin/bash string1="MyString" string2="MyString" if [ "$string1" == "$string2" ] then echo "Equal Strings" else echo "Strings not equal" fi ...
The script states that the string is empty. When the string is not empty, there is no output. To provide an output if the string is not empty, specify theelsecondition in the script, like in the example below. The-nOperator 1. Create a new script and enter the lines below: #!/bin...
-z: Empty string -n: Non-empty string 3. File and Directory Checks: -e: Exists -f: Regular file -d: Directory -r: Readable -w: Writable -x: Executable Example of using If Statement: Let’s illustrate the usage of if statements with a few examples: Example 1: Numeric Comparison !/...
Example 04: In the preceding examples, we utilized single word or integer type values. However, in the current instance, we will use a lengthy string or sentence as a variable for comparison. Upon opening the bash file, we established two string type variables, "s1" and "s2", with identi...
https://www.namehero.com/blog/bash-string-comparison-the-comprehensive-guide https://linuxize.com/post/how-to-compare-strings-in-bash More Articles from Unixmen Bash Script Example: Guide for Beginners Bash: Concatenate Strings Easily with Our Simple Guide ...
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 is used to check for Bash string inequality. This is the same as with the...
Example #2: String Comparison inwhileLoop inbash For string comparison (equal or not equal), you can use regular comparison operators ('==', '!='), whether you are using square brackets or double round brackets. The '=' operator can also be used to check equality of strings. ...
Example 4: Create an Address Book Use thecasestatement to create a simple address bookdatabaseand generate the requested information. The following example outputs the name, email address, and the selected person's address: 1. Create the script: ...
String Comparison Operator in Bash Script We can compare two strings using the = (is equal to) operator in the Bash script. We also use the == operator to compare the string. The == is a synonym of the = operator for string comparison. For example, consider a Bash script First.sh co...
1 if echo "Next *if* is part of the comparison for the first *if*."2 3 if [[ $comparison = "integer" ]]4 then (( a < b ))5 else6 [[ $a < $b ]]7 fi8 9 then10 echo '$a is less than $b'11 fiExample 7-1 什么情况下为真?