Robert Huff wrote:
L Goodwin writes:
My backup script (sh) works fine except when the
backup drive (USB Flash drive) is not plugged in. I'm
using mount_msdosfs to mount the backup drive.
What is the best way to handle mount_msdosfs error?
If the drive is not mounted, I want to detect the
failure and execute error-handling code.
First approximation, using sh:
ls /dev | grep da4s1
if [ $? -eq 0 ];
then
# drive is available
else
# drive is not available
if
(Replace "da4s1" with whatever the flash drive gets created
as.)
Robert Huff
Possibly better (using sh again..):
#!/bin/sh
error_handling_func() {
err_code=$1; shift;
# do something here...
exit $err_code;
}
# This assumes that you have:
# 1. cam/pass support built into the kernel.
# 2. your USB device is interpreted as a SCSI device (which should be
the case).
# 3. your USB device is unique / identifiable by a string.
camcontrol | grep 'Device string' || error_handling_func $?
# do something here since it passed..
Also, FWIW conditionals are actually done like:
if {statement} ; then
elif {statement}; then
else
fi
in Bourne shells.
Also, mount_msdosfs should return a non-zero exit code.
Cheers,
-Garrett
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
