实现了个shell下U盘热插拔识别

#!/bin/bash # name: get_usb_disk.sh # usb storage disk hotplug shell # author LiuQi # mail: lingjiujianke@gmail.com # version: v0.1 # declare -a UEVENT_STRING declare -a USB_DISCONNECT_STRING declare -a USB_DISK_STRING TEMP_FILE_LINE_NUM=0 COUNTER=0 NUMBERS_OF_FILE_LINE=0 COUNTER_FILE_LINE_TEMP=0 LOG_DMESG_NAME="/tmp/dmesg.log" LOG_WC_FILE_NAME="/tmp/wc.log" LOG_UEVENT_MESSAGE_NAME="/tmp/uevent_message.log" LOG_USB_STORAGE_NAME="/tmp/usb_storage_tmp.log" VAR_USB_WITHOUTPARTATION="" dmesg -c >/dev/null rm -rf $LOG_DMESG_NAME rm -rf $LOG_WC_FILE_NAME rm -rf $LOG_UEVENT_MESSAGE_NAME rm -rf $LOG_USB_STORAGE_NAME while [ $COUNTER -lt 1 ] do     dmesg > $LOG_DMESG_NAME     sleep 2     TEMP_FILE_LINE_NUM=`wc -l /tmp/dmesg.log`     echo "$TEMP_FILE_LINE_NUM" > $LOG_WC_FILE_NAME     TEMP_FILE_LINE_NUM=`awk '{ print $1 }' /tmp/wc.log`     NUMBERS_OF_FILE_LINE=$TEMP_FILE_LINE_NUM     COUNTER_FILE_LINE_TEMP=0 #    echo "$LOG_DMESG_NAME"     if [ -e $LOG_DMESG_NAME ]     then         while read UEVENT_STRING[$COUNTER_FILE_LINE_TEMP]         do #            echo "string [$COUNTER_FILE_LINE_TEMP] = ${UEVENT_STRING[$COUNTER_FILE_LINE_TEMP]}"             echo "${UEVENT_STRING[$COUNTER_FILE_LINE_TEMP]}" | awk '{ print $3 $4 }' >> $LOG_UEVENT_MESSAGE_NAME             echo "${UEVENT_STRING[$COUNTER_FILE_LINE_TEMP]}" | awk '{ print $3 }' >> $LOG_USB_STORAGE_NAME             COUNTER_FILE_LINE_TEMP=`expr $COUNTER_FILE_LINE_TEMP + 1`         done < $LOG_DMESG_NAME     fi     if [ -e $LOG_USB_STORAGE_NAME ]     then         COUNTER_FILE_LINE_TEMP=0         while read USB_DISK_STRING[$COUNTER_FILE_LINE_TEMP]         do #            echo "new [$COUNTER_FILE_LINE_TEMP] = ${USB_DISK_STRING[$COUNTER_FILE_LINE_TEMP]}"             if [ "${USB_DISK_STRING[$COUNTER_FILE_LINE_TEMP]}" == "[sdb]" ]             then #                echo "LIUQI=${USB_DiISK_STRING[$COUNTER_FILE_LINE_TEMP]}"                 VAR_USB_WITHOUTPARTATION="${USB_DISK_STRING[$COUNTER_FILE_LINE_TEMP]}"                 VAR_USB_WITHOUTPARTATION="${VAR_USB_WITHOUTPARTATION:1:3}"                 echo "have find a disk $VAR_USB_WITHOUTPARTATION"                 rm -rf $LOG_USB_STORAGE_NAME                 dmesg -c > $LOG_DMESG_NAME                 break             fi             COUNTER_FILE_LINE_TEMP=`expr $COUNTER_FILE_LINE_TEMP + 1`         done < $LOG_USB_STORAGE_NAME         rm -rf $LOG_USB_STORAGE_NAME     fi     if [ -e $LOG_UEVENT_MESSAGE_NAME ]     then         while read USB_DISCONNECT_STRING[$COUNTER_FILE_LINE_TEMP]         do #            echo "liuqi ${USB_DISCONNECT_STRING[$COUNTER_FILE_LINE_TEMP]}"             if [ "${USB_DISCONNECT_STRING[$COUNTER_FILE_LINE_TEMP]}" == "USBdisconnect," ]             then                 sleep 1                 dmesg -c > $LOG_DMESG_NAME #                rm -rf $LOG_USB_STORAGE_NAME                 rm -rf $LOG_DMESG_NAME #                rm -rf $LOG_WC_FILE_NAME #                rm -rf $LOG_UEVENT_MESSAGE_NAME #                exit             fi         done < $LOG_UEVENT_MESSAGE_NAME         rm -rf $LOG_UEVENT_MESSAGE_NAME     fi     if [ $TEMP_FILE_LINE_NUM -gt 3 ]     then         sleep 0.1 #        break;     fi     rm -rf /tmp/dmesg.log done