[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

expansion and redirections

From: Telychko
Subject: expansion and redirections
Date: Wed, 02 Oct 2013 17:25:47 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130925 Thunderbird/17.0.8


Recently i found this feature(or bug):

its reproduce interactively

$exec 3</dev/zero    # open /dev/zero on 3
$VAR=3               # have some variable with file descriptor
$exec $VAR<&-        # trying to close previously opened file descriptor
bash: exec: 3: not found

so we have expansion $exec $VAR<&- --> $exec 3 <&- ... why not $exec 3<&-

$exec 3<&-     # close normally

Best regards.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]