"Com MN PG P E B Consultant 3" <[EMAIL PROTECTED]>
writes:
> $ unalias fooee 2>&1 >/dev/null
> bash: unalias: fooee: not found
>
> Why is the error message displayed here?
Because you have redirected stderr (fd 2) to the channel connected to
stdout (fd 1) before stdout was redirected to a different channel (to
/dev/null).
> Because of the redirection, I had expected that any error message
> resulting from the unalias command would go to /dev/null
Read the bash manual, node Redirections:
Note that the order of redirections is significant. For example,
the command
ls > DIRLIST 2>&1
directs both standard output (file descriptor 1) and standard error
(file descriptor 2) to the file DIRLIST, while the command
ls 2>&1 > DIRLIST
directs only the standard output to file DIRLIST, because the
standard error was duplicated as standard output before the standard
output was redirected to DIRLIST.
Andreas.
--
Andreas Schwab, SuSE Labs, [EMAIL PROTECTED]
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
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