And if you’re piping commands, don’t forget it’s the actual command named in the error that needs the “–“:

[code]$ find . | xargs grep selfip.b
grep: unknown directories method
$ find — . | xargs grep selfip.b
grep: unknown directories method
$ find . | xargs — grep selfip.b
grep: unknown directories method
$ find . | xargs grep — selfip.b
(success)
$
[/code]