本篇ShengYu 介紹Shell Script if 條件判斷式，常常在Shell Script 腳本裡會 ... 這邊舉個範例，Shell Script 用if 加上else 判斷兩個字串是否相同， ... ... <看更多>

IF - ELIF ... CONDITIONAL STATEMENTS (SIMPLE-IF , IF - ELSE , IF-ELIF-ELSE) IN SHELL SCRIPTING ... LINUX / UNIX COMMANDS & SHELL SCRIPTING ... ... <看更多>

Your script has the shebang #!/bin/sh and tries to use [[ , which is bash-specific syntax. You should either change the shebang: #!/bin/bash. ... <看更多>

or using bash syntax, em1=first em2=second for file in *; do if [[ $file == "$em1"[.-]* ]]; then ( cd Em1 && month_range ) elif [[ $file ... ... <看更多>