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2010/11/25 -For string equality comparison, use: if [[ "$s1" == "$s2" ]]. For string does NOT equal comparison, use: if [[ "$s1" != "$s2" ]].
2026/10/21 -Comparing strings is one of the most fundamental operations in Bash scripting. Use == and != for equality checks, =~ for regex matching, and -z ...
2014/7/17 --eq is an arithmetic operator, which compares two numbers. Use = (portable/standard sh ), =~ or == instead. Also use quotes, because if ...
2023/9/25 -The comparison operator for strings is the single equal sign if you use the if statement with single square brackets, or the double equal sign ...
2023/3/13 -You can write an 'if' statement on a single line if you add ; : if [[ "str1" == "str2" ]]; then compare=true; else compare=false; fi.
How to compare strings in Bash Bash Compare Strings: How to Check if Two Strings Are Equal Compare a string using sh shell - Stack Overflow ...
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2026/1/13 -Knowing how to bash compare strings is an important skill for validating user input or processing text data.
2025/8/3 -The Unix & Linux answer Comparing floats with an if-else statement in a shell script says bash only supports integer numbers for comparison ...
2015/12/9 -I need to compare two strings and ignoring the case of the contents. IF [ $first != $second ]. Anything I can add to this command so that the ...
2019/5/15 -So, I'm trying to compare 2 string variables using if statement and trying to get it to work in Bash. #!/bin/bash s1="hi" s2="hi" if ["$s1" ...