As far as I know, its POSIX compliant? https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_07_06 https://pubs.opengroup.org/online

As far as I know, its POSIX compliant? https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_07_06 https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V... The redirection operator: [n]>&word shall duplicate one output file descriptor from another, or shall close one. If word evaluates to one or more digits, the file descriptor denoted by n, or standard output if n is not specified, shall be made to be a copy of the file descriptor denoted by word