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 ...
case "$string" in "$pattern" ) echo "found";; esac Run Code Online (Sandbox Code Playgroud) 小智 15 以下脚本逐行从名为"testonthis"的文件中读取,然后将每行与一个简单的字符串,一个带有特殊字符的字符串和一个正则表达式(如果它不匹配)进行比较,那么脚本将打印该行而不是. bash中的空间非常重要...
Example 1: If statement in bash on string equality #!/bin/bash read-p"Enter a match word: "USER_INPUT if[[$USER_INPUT=="hello"]];then echo"Hello to you as well" fi In this example above we use the basicIFcondition with a single test of string equality and then print some output...
string2="MyString" if [ "$string1" == "$string2" ] then echo "Equal Strings" else echo "Strings not equal" fi 💡 Pay Attention to the spaces There must be a space between the[and the variable name and the equality operator==. If you miss any of the spaces here, you’ll see...
Knowing how conditionals work in bash open up a world of scripting possibilities. We’ll learn the basic syntax, including if, else, and elif. Then we'll look at a few of the "primary" operators you can leverage in a conditional statement such as = for string equality, -eq for numeric...
and elif. Then we'll look at a few of the "primary" operators you can leverage in a conditional statement such as = for string equality, -eq for numeric equality, and -e to check if a file exists. After that, we'll use conditional statements to create a function that asserts that ...
About Bash Language Bash: A Script For User Input Here is everything you need to know about Bash for Windows Bash Script SSH: How to Use It How to use bash get script directory in Linux Learn about a bash error code How to Check Bash String Equality 123456FREE...
OK, it works, but it's not very functional. Before we make it more useful, let's take a look at the "if" statement used above. In it, we have a boolean expression. In bash, the "=" comparison operator checks for string equality. In bash, all boolean expressions are enclosed in ...
Equality and Inequality To check if two strings are equal, use == operator ? Open Compiler string1="Hello, world!"string2="Hello, world!"if["$string1"=="$string2"];then echo"Strings are equal"elseecho"Strings are not equal"fi
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...