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Top Forums Shell Programming and Scripting bash: closing file descriptors from a process Post 302452629 by konsolebox on Sunday 12th of September 2010 04:19:17 AM
Old 09-12-2010
you just have to close them then:

Code:
#!/bin/bash

{
	exec 62>&-
	exec 63>&-
	lvcreate -s -l 100%FREE -n var-data-snapshot vg00/var-data
} 2> >(logger -t "loggingtest.crit") 1> >(logger -t "loggingtest.info")

sync &
wait

{
	exec 62>&-
	exec 63>&-
	lvremove -f vg00/var-data-snapshot
} 2> >(logger -t "loggingtest.crit") 1> >(logger -t "loggingtest.info")



---------- Post updated at 04:19 PM ---------- Previous update was at 04:16 PM ----------

Thanks to this thread I now know why I have some fds left open even if I close a duplicate fd.
 

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LOGGER(1)						    BSD General Commands Manual 						 LOGGER(1)

NAME
logger -- make entries in the system log SYNOPSIS
logger [-is] [-f file] [-p pri] [-t tag] [message ...] DESCRIPTION
Logger provides a shell command interface to the syslog(3) system log module. Options: -i Log the process id of the logger process with each line. -s Log the message to standard error, as well as the system log. -f file Log the specified file. -p pri Enter the message with the specified priority. The priority may be specified numerically or as a ``facility.level'' pair. For example, ``-p local3.info'' logs the message(s) as informational level in the local3 facility. The default is ``user.notice.'' -t tag Mark every line in the log with the specified tag. message Write the message to log; if not specified, and the -f flag is not provided, standard input is logged. The logger utility exits 0 on success, and >0 if an error occurs. EXAMPLES
logger System rebooted logger -p local0.notice -t HOSTIDM -f /dev/idmc SEE ALSO
syslog(3), syslogd(8) STANDARDS
The logger utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). 4.3 Berkeley Distribution June 6, 1993 4.3 Berkeley Distribution
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