The default behaviour is to include the standard input and standard output in the names of the file descriptor paths when replacing <| and >| arguments respectively.
When the flags -I and/or -O are provided, the standard input and/or standard output should not be included in the file arguments to replace. The replacement should start from the next file descriptor. In this case, the standard input and/or standard output will be piped in and/or out of the command.
The default behaviour is to include the standard input and standard output in the names of the file descriptor paths when replacing
<|and>|arguments respectively.When the flags
-Iand/or-Oare provided, the standard input and/or standard output should not be included in the file arguments to replace. The replacement should start from the next file descriptor. In this case, the standard input and/or standard output will be piped in and/or out of the command.