adb_screencap_with_multiple_device_script.sh

#!/bin/bash

get_adb_devices()
{
  adb $ADB_SERVER devices $LONG 2>&1 | tail -n +2 | sed '/^$/d'
}

git_pull()
{
    [[ "$UNAME" == 'Linux' ]] && OPT=-e
    ASD=$(readlink $OPT $0)
    if [[ -n "$ASD" ]]
    then
        DIR=$(dirname $ASD)
        if [[ -n "$DIR" && -d "$DIR/.git" ]]
        then
            (cd $DIR && git pull)
        fi
    fi
}

PROGNAME=$(basename $0)
VERSION="3.2.0"
UNAME=$(uname)
DEVICE_OPT=
LONG=
ADB_SERVER=

git_pull > /dev/null

for opt in "$@"
do
	case "$opt" in
		-d|-e|-s)
			DEVICE_OPT=$opt
			;;
		
        -l|--long)
            LONG=-l
            ;;

		start-server|kill-server|connect|-help)
			exit 0
			;;

        -V|--version)
            echo "$PROGNAME version $VERSION"
            exit 0
            ;;
	esac
done
[ -n "$DEVICE_OPT" ] && exit 0
DEV=$(get_adb_devices)
if [ -z "$DEV" ]
then
	echo "$PROGNAME: ERROR: There's no locally connected devices." >&2
    read -p "Do you want to connect to a remote adb server? [Y/n]: " REPLY
    case "$REPLY" in
        n|N)
            exit 1
            ;;

        y|Y|"")
            read -p "ADB server IP: " IP
            ADB_SERVER="-H $IP"
	        DEV=$(get_adb_devices)
            ;;
	esac
elif echo "$DEV" | grep -q 'daemon started successfully'
then
	# try again
	DEV=$(get_adb_devices)
fi
N=$(echo "$DEV" | wc -l | sed 's/ //g')

case $N in
1)
	# only one device detected
	D=$DEV
	;;

*)
	# more than one device detected
	OLDIFS=$IFS
	IFS="
"
	PS3="Select the device to use, <Q> to quit: "
	select D in $DEV
	do
		[ "$REPLY" = 'q' -o "$REPLY" = 'Q' ] && exit 2
		[ -n "$D" ] && break
	done < /dev/tty

	IFS=$OLDIFS
	;;
esac

if [ -z "$D" ]
then
	echo "$PROGNAME: ERROR: target device couldn't be determined" >&2
	exit 1
fi

# this didn't work on Darwin
# echo "-s ${D%% *}"
SELECTED_DEVICE=$(echo ${D} | sed 's/ .*$//') 
# echo ${SELECTED_DEVICE}
# adb -s ${SELECTED_DEVICE} shell

SS_DIR=$HOME/share/screenshot

if [ -d "$SS_DIR" ]; 
then
       echo "screenshot save file dir exist "
else
	mkdir -p ${SS_DIR}
fi


DEVICE_SS_DIR=/data/local/tmp/

cd ${SS_DIR}

#DATE=$(date +%m%-d%-H%-M%-S)
DATE=$(date +%s)


#if perl < /dev/null > /dev/null 2>&1  ; then
  # 电脑上有 perl 执行下面的命令
  #adb shell screencap -p | perl -pe 's/\x0D\x0A/\x0A/g' > ${DATE}.png
#else
  # 电脑上没 perl,多次使用 adb 命令
  adb -s ${SELECTED_DEVICE} shell screencap -p ${DEVICE_SS_DIR}${DATE}.png
  adb -s ${SELECTED_DEVICE} pull ${DEVICE_SS_DIR}${DATE}.png 
#fi

# 打开文件夹
# mac 上使用open 命令,
# linux使用 naultilus 命令,
# windows 使用 explore 命令
open $SS_DIR 
# echo "Please check your screencap picture in "${SS_DIR}