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 💡 Pay Attention to ...
Checking if two Bash script strings are equal isn’t a big thing per se, and even if the Bash script strings are not equal, that’s not also a big thing. This article explains everything you need to know about Bash string equality, plus how you can access and use Linux files on Win...
!= Not equal to (for strings) < Less than (in ASCII alphabetical order) > Greater than (in ASCII alphabetical order) == Double equals to (used to compare two strings) -z The String is null -n The String is not null File test operators Bash OperatorMeaning -e Check whether the file...
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. TIME=`da...
String null or not To check if two strings are equal, use==operator. Strings are case sensitive, so you have to run the comparison keeping this point in mind. $ X="Linux" $ Y="Linux" $ [[ $X == $Y ]] && echo "Equal" || echo "Not equal" ...
```bash if [[ ]]; then fi Exp: if[[$USER='username']];thenecho"true"elseecho"false"fi not equal:!= numeric equality:-eq not equals:-ne is empty:-z if[[1-eq1]];if[[-z$USER]]; Elif if[[-z$USER]];thenecho"user is empty"elif[[1-eq1]];thenecho"1==1"elseecho"false...
#Declare string S2 S2="Bash" if [ $S1 = $S2 ]; then echo "Both Strings are equal" else echo "Strings are NOT equal" fi 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Bash File Testing #!/bin/bash file="./file" if [ -e $file ]; then ...
How to check if a string is in an array? How to use the Bash ternary operator? How to negate an if condition in a Bash if statement? (if not command or if not equal) How to use the BASH_REMATCH variable with the Regular Expression Operator =~?
The script first prompts for the two strings and then outputs the result. Note:Theread commandprompts the user for input. Without it, you must specify the variables within the script. Check if Strings are Different The!=inequality operator allows users to test if two strings are not equal. ...
-eq 两数值相等 (equal) -ne 两数值不等 (not equal) -gt n1 大于 n2 (greater than) -lt n1 小于 n2 (less than) -ge n1 大于等于 n2 (greater than or equal) -le n1 小于等于 n2 (less than or equal) 5. 判定字符串的数据 test -z string 判定字符串是否为 0 ?若 string 为空字符串,...