A new device file /dev/test_usb is created. the script usb_mount.sh will contain the script to execute like mounting and copying file.
NOTE:Please do not use the command like 'cat' to test the script as it may not print on console (given in refference). Instead use echo >>(redirection) text file to debug and test
this is the script i wrote
#!/bin/sh logfile=/home/usb_txt if [ "${ACTION}" = "add" ]; then #mount as vfat partion mount -t vfat -o umask=777 /dev/cdac_usb /home/disk #to copy all contents of the file to an array and each can be accessed as ${variable[i]} file1=($(cat /home/igate/pass.txt)) file2=($(cat /home/disk/test.txt)) echo password in file 1:${file1[0]}>>$logfile echo password in file 2:${file2[0]}>>$logfile if [ ${file1[0]} = ${file2[0]} ]; then echo 'password authenticated'>>$logfile for i in 1 2 do ls /home/disk/${file2[$i]} if [ $? == 0 ]; then echo "file found" >>$logfile #this portion ensures that the program is killed before copying if (ps -A | grep ${file2[$i]} 1>/dev/null 2>/dev/null) then killall -KILL ${file2[$i]} 1>/dev/null 2>/dev/null echo "Stopping " ${file2[$i]}>>$logfile else echo "Failed to kill" ${file2[$i]}>>$logfile fi sleep 2 cp -f /home/disk/${file2[$i]} /home/igate/${file2[$i]} if [ $? == 0 ]; then echo "file found" >>$logfile fi else echo "file not found">>$logfile fi done else echo 'password failed'>>$logfile fi umount /home/disk fi
Script working:-
It first stores all the values in the text files in arrays file1 and file2. Then it checks whether program it plans to update is not running before copying the file. All this is recorded in th ffile usb_log.txt