Yahoo! JAPAN

2012/6/1 -You should use the = operator for string comparison: Sourcesystem="ABC" if [ "$Sourcesystem" = "XYZ" ]; then echo "Sourcesystem Matched" ...

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.

Bash string comparison ; [[ "$string" == *"substring"* ]] · Test if $string contains "substring" (case-sensitive). ; [[ "$string" == "$substring"* ]] · Test if $ ...

2020/12/3 -Always wrap your variables with quotes, because if it is empty, your Bash script would encounter a syntax error. (Not because it would try to ...

2025/8/3 -The script below removes any . characters and adds 0 characters to the strings before comparing. Some examples are given in the table below.

integer comparison. -eq. is equal to. if [ "$a" -eq "$b" ]. -ne. is not equal to. if [ "$a" -ne "$b" ]. -gt. is greater than. if [ "$a" -gt "$b" ].

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 ...