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Top Forums Shell Programming and Scripting Fdisk and grep command not working in udev trigger Post 303023245 by lxdorney on Thursday 13th of September 2018 10:21:16 AM
Old 09-13-2018
Code:
cat  /usr/local/bin/test.sh

#!/bin/bash

LOG_FILE=/opt/weekly_backup.log

DEVNAME=$(/sbin/fdisk -l |/bin/grep FAT16 |awk '{print $1}') 2>&1 >> $LOG_FILE

#fdisk -l |grep FAT16 |awk '{print $1}' 2>&1 >> $LOG_FILE

sleep 2

echo "New usb device detected at $DEVNAME" &>> $LOG_FILE

echo "mount $DEVNAME /media/usb/test" &>> $LOG_FILE

sudo mount $DEVNAME /media/usb/test &>> $LOG_FILE

running this command
Code:
udevadm trigger

is working here the output of log

Code:
cat /opt/weekly_backup.log

New usb device detected at /dev/sdb1
mount /dev/sdb1 /media/usb/test

pluging the usb here the output:

Code:
New usb device detected at
mount  /media/usb/test
mount: can't find /media/usb/test in /etc/fstab or /etc/mtab

but if I put manually the
Code:
DEVNAME=/dev/sdb1

and plugin the usb is working
 

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lsusb(8)							Linux USB Utilities							  lsusb(8)

NAME
lsusb - list all USB devices SYNOPSIS
lsusb [options] DESCRIPTION
lsusb is a utility for displaying information about all USB buses in the system and all devices connected to them. To make use of all the features of this program, you need to have Linux kernel 2.3.15 or newer which supports the /proc/bus/usb interface. OPTIONS
-v Tells lsusb to be verbose and display detailed information about all devices. -vv Tells lsusb to be very verbose and display even more information (actually everything the PCI device is able to tell). -s [[<bus>]:][<devnum>]] Show only devices in specified bus and devnum. -d [<vendor>]:[<product>] Show only devices with specified vendor and product ID. Both ID's are given in hexadecimal and may be omitted. -p <procpath> Use another path instead of /proc/bus/usb. -D <device> Do not scan the /proc/bus/usb directory, instead display only information if the device whose device file is given. -t Tells lsusb to dump the physical USB device hierarchy as a tree. FILES
/usr/share/hwdata/usb.ids A list of all known USB ID's (vendors, products, classes, subclasses and protocols). /proc/bus/usb An interface to USB devices provided by the post-2.3.15 Linux kernels. Contains per-bus subdirectories with per-device files and a devices file containing a list of all USB devices. SEE ALSO
lspci(8) AUTHOR
Thomas Sailer, <sailer@ife.ee.ethz.ch>. usbutils-0.2 14 September 1999 lsusb(8)
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