In below two cases "rm" command with "-f" option will return 0:
a. Bad arguments
b. File not exists
Following "rm" of GNU coreutils 8.32
GNU coreutils
$ rm --version
rm (GNU coreutils) 8.32
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Paul Rubin, David MacKenzie, Richard M. Stallman,
and Jim Meyering.
$ rm /FILE_NOT_EXISTS
rm: cannot remove '/FILE_NOT_EXISTS': No such file or directory
$ echo $?
1
$ rm -f
$ echo $?
0
$ rm -f /FILE_NOT_EXISTS
$ echo $?
0
Without this patch
nsh> rm
nsh: rm: missing required argument(s)
nsh> rm /FILE_NOT_EXISTS
nsh: rm: unlink failed: 2
nsh> echo $?
1
With this patch
nsh> rm -f
nsh> echo $?
0
nsh> rm -f /FILE_NOT_EXISTS
nsh> echo $?
0
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
aaf4e9d480