日本語のみで絞り込む
2010/2/10 -Using variables in if statements. if [ "$x" = "valid" ]; then echo "x has the value 'valid'" fi. If you want to do something when they don't ...
2025/10/6 -We can use the diff command to compare the contents of files. Likewise, it spots differences between two strings. 2.1. How diff Works. diff uses ...
2020/4/27 -The diff command analyzes two files and prints the lines that are different. Can I use the same diff command to compare two strings? $ more file ...
2026/10/21 -Use = with the test ( [ ) command and == with the [[ command. string1 != string2 - The inequality operator returns true if the operands are not ...
2026/1/13 -Multiple Methods: You can compare strings using the test command, single brackets [ ] , double brackets [[ ]] , or one-liner logic. Best ...
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.
2015/12/9 -In bash, you can perform case conversions easily e.g. if var="vAlUe" then $ echo "${var^^}" VALUE. while $ echo "${var,,}" value.
For more advanced string comparison operations, we can use the bash builtin [[ command, which supports a variety of string comparison and pattern-matching ...
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, and ...
2023/11/21 -The most basic way to compare two strings in bash is to check whether or not they're the same. We do this using double equal signs (==) for ...