bashif-statementscripting How do I compare two string variables in an 'if' statement in Bash? 本问题已经有最佳答案,请猛点这里访问。 我正在尝试在bash中使用if语句(使用ubuntu): 123456789 #!/bin/bash s1="hi" s2="hi" if ["$s1" =="$s2"] then echo match fi 我试过各种形式的if声明,使用...
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We can use = (equal to) operator in Bash script to compare two strings. We also use==operator to compare strings. ==Is a synonym for the = operator for string comparisons. For example, consider a Bash script First.sh with the following contents. #!/bin/BashS1="Hello World"S2="Hello...
Here is how you compare strings in Bash. if [ "$string1" == "$string2" ] You can also use a string directly instead of using a variable. if [ "$string1" == "This is my string" ] Let me show it to you with proper examples. Example 1: Check if two strings are equal If yo...
When writing Bash scripts you will often need to compare two strings to check if they are equal or not. Two strings are equal when they have the same length and contain the same sequence of characters.
‘test’: Check file types and compare values man test(获取帮助) test的判断表达式分为4类 string integer expression file testexits with the status determined by EXPRESSION. Placing the EXPRESSION between square brackets ([and]) is the same as testing the EXPRESSION withtest. ...
Variable names with a dollar sign can also be used inside other strings in order to insert the value of the variable into the string: echo"I went to school in$the_empire_state." ## I went to school in New York. When writing a Bash script, the script gives you a few variables for...
‘test’: Check file types and compare values man test(获取帮助) test的判断表达式分为4类 string integer expression file testexits with the status determined by EXPRESSION. Placing the EXPRESSION between square brackets ([and]) is the same as testing the EXPRESSION withtest. ...
As mentioned, we will use != to compare the strings. Let’s look at an example. #!/bin/bash nameone="Bobby" nametwo="Shera" if [[ $nameone != $nametwo ]]; then echo "Not Equal!" else echo "Equal!" fi We declared two string variables, nameone with the value Bobby and nam...
Comparison operators are used in bash to compare two strings to check if they are equal or not. Here, we will list some comparison operators including, string, and integer operators. Integer Operators Operators Explanation -eq is equal to -ne is not equal to -gt is greater than -ge is gr...