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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.
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.
2026/1/13 -Note that In Bash, you can either use = (single equal sign) or == (double equal sign) for string comparison. Before we can run this script, ...
2013/9/30 -The right way to compare those two strings ( S1 and S2 ) using if is: if [ "$S1" = "$S2" ]. Do not be stingy in use spaces in this case.
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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We can use the = operator in Bash to see if two strings are equal. For example: if [ "$string1" = "$string2" ]; then. echo "Strings are equal". else. echo " ...
2025/8/3 -How to extract two numbers from two strings and calculate the difference in Bash? 2 · Bash: Find and replace text strings · 1 · Bash Script ...
2020/2/15 -Compare strings in Bash with =, ==, !=, -z and -n. Learn empty vs unset values, substring and glob matching, case-insensitive checks, ...