[Linux] Auto copy USB video file to HD

需求插入USB後自動尋找相關檔案並copy到指定資料夾
試了兩種方式

先利用先前文章介紹的udev,register一個callback,我們先以 root 的權限在 /etc/udev/rules.d/ 這個資料夾裡建立一個新檔：

1. $ sudo vim /etc/udev/rules.d/z101_run_my_script.rules
   檔案內容只要一行:
   RUN+="/home/copy_file

當每次USB插入時event就會產生

1. 搜尋法

1. #!/bin/bash
   # Shell to read source file and copy it to target file. If the file
   # is copied successfully then give message 'File copied successfully'
   # else give message 'problem copying file'
   # --------------------------------------------------------------
   LOGFILE=/home/nash/copy_file.log #定義變數LOGFILE
   exec 3>> $LOGFILE && exec >& 3 && exec 2>&1 #把stdout/stderr導入$LOGFILE
   
   count=1
   
   if [ "$SUBSYSTEM" = "usb_device" -a "$ACTION" = "add" ]
   then
     while [ "$n" -lt 10 ]
     do
       for file in /media/*/aaa.wmv
       do
         echo $file
       done
   
       count=$(( $count + 1 ))
       echo $n
   
       if [ -e $file ]
       then
         break
       fi
   
       sleep 1
     done
   
     if [ -e $file ]
     then
        echo "NEW video File exists"
        if [ -e /home/nash/aaa.wmv ]
        then
           echo "old video File exist"
           rm -fr /home/nash/aaa.wmv
        fi
   
        # copy file
        cp $file /home/nash/aaa.wmv
   
        # store exit status of above cp command. It is use to
        # determine  if shell command operations is successful or not
        status=$?
   
        if [ $status -eq 0 ]
        then
          echo 'File copied successfully'
          exit 0
        else
          echo 'Problem copuing file'
          exit 1
        fi 
     fi
   
     echo "NEW video File does not exists"
   fi

2. 強制法[暴力法]
一.先在/mnt下建立兩個資料夾

1. [root@ ~]# mkdir mnt/sda1
   [root@ ~]# mkdir mnt/sdb1

二.不等系統去找USB就先掛載

1. 
   #!/bin/bash
   # --------------------------------------------------------------
   LOGFILE=/home/nash/copy_file.log #定義變數LOGFILE
   exec 3>> $LOGFILE && exec >& 3 && exec 2>&1 #把stdout/stderr導入$LOGFILE
   
   #掛載USB
   mount /dev/sda1 /mnt/sda1
   mount /dev/sdb1 /mnt/sdb1
   
   #拷貝檔案
   cp /mnt/sda1/aaa.wmv /home/nash/aaa.wmv
   cp /mnt/sdb1/aaa.wmv /home/nash/aaa.wmv
   
   #同步
   sync
   
   #移除掛載USB
   umount /dev/sda1
   umount /dev/sdb1