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.
String comparison includes comparing the value of two strings - their length or sequence of characters. Compare strings when checking for certain conditions before proceeding to the next step of the script. This tutorial will teach you how to compare strings using a Bash script. Prerequisites A sy...
在bash中,可以使用双等号(==)运算符来判断两个字符串是否相等。然而,有时候即使两个字符串看起来完全相同,使用双等号运算符也可能返回不相等。这是因为在bash中,双等号运算符进行了模式匹配,而不仅...
Comparison Operators 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 Regular Expressions Regular expressions are shortened as ‘regexp' or ‘regex...
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...
如何SSH到另一台主机并在其上运行几个命令? #!/bin/bash # 先配置SSH的免密,之后执行此脚本 hostname ssh root@10.245.110.69 'hostname; whoami; date' hostname 如何使用IF语句比较字符串的值? #!/bin/bash string1="Hello World!" string2="Hello Bash!" ...
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...
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...
It is advisable always to check and compare if two strings are equal in a Bash script; this is quite important for different reasons. If two strings are equal in a Bash script, it implies that both strings have the same length and character sequence. The “if” statement is used to chec...
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 containing the following contents. #!/bin/...