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shell 判断某个元素是否在数组中，查看某个key是否存在
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| if [[ " ${array[@]} " =~ " ${value} " ]]; then | |
| # whatever you want to do when arr contains value | |
| fi | |
| ------------------------------------------------------ | |
| if [[ ! " ${array[@]} " =~ " ${value} " ]]; then | |
| # whatever you want to do when arr doesn't contain value | |
| fi | |
| ------------------------------------------------------ | |
| if [[ " ${!array[@]} " =~ " ${value} " ]]; then | |
| # whatever you want to do when arr contains value | |
| fi | |
| ------------------------------------------------------ | |
| ${!array[@]} 获取所有的key | |
| ${array[@]} 获取所有的value | |
| ------------------------------------------------------ | |
| Indexed arrays use positive integer numbers as keys. | |
| Shell 的 Array 数组 使用正整数作为key | |
| -------------------- | |
| http://wiki.bash-hackers.org/syntax/arrays | |
| array=() | |
| declare -a ARRAY | |
| 直接声明的数组不支持 字符串做为索引，只支持正整数作为key。 | |
| 如要要声明 关系型数组，需要使用 | |
| declare -A ARRAY | |
| declare -A ARRAY Declares an associative array ARRAY. This is the one and only way to create associative arrays. | |
| ------------------------------------------------------ | |
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测试后，${array[@]}输出结果以逗号分割，如果数组中确保不会出现逗号，可以用这个。