[Q] How to use string array in init.d script? - Android Q&A, Help & Troubleshooting

I want to make app symlinks to sd-ext on booting.
I made a short init.d script, And It correctly worked on JB based rom.
But after I downgraded to GB, It doesn't work anymore.
I founded that pure bone shell doesn't support arrays.
The script uses string array to declare apk list I want to symlink.
So is there a way to use string array or make similar effect?
Here is my script.
Code:
#!/system/bin/sh
if [ -z "$SD_EXT_DIRECTORY" ]; then SD_EXT_DIRECTORY=/sd-ext; fi
SYSBLOCK=`mount | grep system | cut -f 1 -d ' '`
sysapp2sd=("BackupRestoreConfirmation.apk" "BasicDreams.apk" "Bluetooth.apk" "CertInstaller.apk" "Calculator.apk" "CMFileManager.apk" "CMScreenshot.apk" "DSPManager.apk" "DrmProvider.apk" "Email.apk" "Email2.apk" "Exchange.apk" "Exchange2.apk" "Gmail.apk" "GoogleBackupTransport.apk" "InputDevices.apk" "Music.apk" "OneTimeInitializer.apk" "PhotoTable.apk" "PicoTts.apk" "SamsungTTS.apk" "SharedStorageBackup.apk" "SoundRecorder.apk" "Talk.apk" "ThemeChooser.apk" "ThemeManager.apk" "Torch.apk" "VpnDialogs.apk" "WAPPushManager.apk")
app2sd_exception=("com.UCMobile" "com.adobe.flashplayer" "com.android.lmt" "com.fiberthemax.OpQ2keyboard" "com.fiberthemax.OpQ2keyboard.dict.ko" "com.google.android.gms" "com.google.android.googlequicksearchbox" "com.jungsup.thecall" "com.mobint.hololauncher" "com.mobint.hololauncherplus" "com.mobitobi.android.gentlealarm" "com.myhome.mytheme" "com.rs.autorun" "com.teslacoilsw.launcher" "com.vladlee.callconfirm.free" "eu.chainfire.supersu" "kz.mek.DialerOne" "me.dennis.weather.naver" "net.dinglisch.android.taskerm" "net.everythingandroid.smspopup" )
# make sure $SD_EXT_DIRECTORY is actually mounted
if ! awk -vDIR="$SD_EXT_DIRECTORY" '$2 == DIR { exit 1; }' /proc/mounts ; then
mount -rw -o remount SYSBLOCK /system
mkdir -p /sd-ext/symlink/system/app
# /system/app/ -> /sd-ext/symlink/system/app/
FILES=`find /system/app -maxdepth 1 -type f`
for file in $FILES; do
filename=`basename $file`
for pattern in ${sysapp2sd[@]}; do
if [[ $filename == $pattern ]]; then
cp /system/app/$filename /sd-ext/symlink/system/app/
rm -f /system/app/$filename
ln -s /sd-ext/symlink/system/app/$filename /system/app/$filename
fi
done
done
# /data/app/ -> /sd-ext/symlink/data/app/
FILES=`find /data/app -maxdepth 1 -type f`
for file in $FILES; do
filename=`basename $file`
match=false
for pattern in ${app2sd_exception[@]}; do
if [[ $filename == $pattern* ]]; then
match=true
fi
done
if ! $match; then
cp /data/app/$filename /sd-ext/symlink/data/app/
rm -f /data/app/$filename
ln -s /sd-ext/symlink/data/app/$filename /data/app/$filename
fi
done
mount -r -o remount SYSBLOCK /system
fi

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You can use echo or cat command to wrap list and grab it with awk.
and add another for loop over for loop for getting the counted numbers to be used on awk...