Run shell script from android application

Question

I have one shell script like this,

    #Script name : test.sh
    mkdir /boot
    mount -t vfat /dev/block/mmcblk0p1 /boot
    cp file1 /boot
    umount /boot

    mkdir -p /test1/test2/test3
    cp file2 /test1/test2
    cp file3 /test1/test2/test3
    STATUS=TRUE

Now this script is located in /test/ directory. I am calling this script from ac function which is called from android application via jni. I am using this function to call my script in C

void Java_com_ndkdemo_NDKdemoActivity_systemcall(JNIEnv * env, jobject obj) {
    fp = popen(". /test/./test.sh; echo STATUS=$STATUS","r");
    while (fgets(buffer, sizeof (buffer), fp) != 0)
    {
        LOGD("%s",buffer);
    }
}

Now when ever i call this systemcall function from my activity, it is not able to execute the commands inside the script test.sh The same script is working if i am compiling a binary from normal C source code and execute that binary on console. I have tried to give permission with "chmod 777 /test/test.sh" but still it's not working.

Any help will be appreciated. Thank you.

Answer 1

If your shell interpreter is /system/bin/sh then:

• for shell scripts that start with a shebang , make it #!/system/bin/sh

• try to use the interpreter path itself instead of the . character to run your script

And it seems that popen may not work in older versions of Android .