>>583
shellcheck

こういうエラーが出る

$ shellcheck posix.sh

In posix.sh line 3:
array=(1 2 3)
^---^ SC2034: array appears unused. Verify use (or export if used externally).
^-----^ SC2039: In POSIX sh, arrays are undefined.

For more information:
https://www.shellcheck.net/wiki/SC2034 -- array appears unused. Verify use ...
https://www.shellcheck.net/wiki/SC2039 -- In POSIX sh, arrays are undefined.


> もしくはピュアPOSIXの実装とか
それがdash