Yeah, I know, but 'export -f' is not POSIX compliant [1]. In addition, I have read, that this solution has quite a bad performance [2]. 1: https://pubs.opengro

Yeah, I know, but 'export -f' is not POSIX compliant [1]. In addition, I have read, that this solution has quite a bad performance [2]. 1: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_22 https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V... 2: https://stackoverflow.com/a/67780632/1149404 https://stackoverflow.com/a/67780632/1149404