SHELL Command works fine as a standalone command, but fails when put into a shell script?

Question

Android 8.1 PIXEL 2 with root access.

I have seen this asked here once before but the only solution didn't help me at all. I am going to try and make this as simple as I can for the example.

If I run the following command in terminal emulator or adb shell:

am force-stop com.myapp.frustrated

It will quit the app just fine. But when I run it in this shell script:

#!/bin/sh
am force-stop com.myapp.frustrated

Nothing happens. It is odd to me that I can do many other commands just fine in a script, but a handful of them do not work.

Any suggestions you have are much appreciated.

Make sure that shell exists at path /bin/sh or use /system/bin/sh. Also take care of line endings in script: Commands run on terminal but throw errors in shell script — Irfan Latif, Feb 12 '20 at 03:36
Are you running the script from within a adb shell or just from the command prompt with adb? — Bo Lawson, Feb 12 '20 at 07:47

score -1 · Answer 1 · answered Feb 11 '20 at 23:26

-1

Removing #!/bin/sh fixed my issue. Thanks

answered Feb 11 '20 at 23:26

Jason Waltz

175
3

3

Replacing it by /system/bin/sh would most likely have worked as well. Background: That line specifies the binary ("interpreter") to run this script with. As there is no /bin/sh on Android, the specified interpreter wasn't found and thus the script not run. Could you please verify that – and then integrate these facts with your answer? When done please ping me, so I can remove my comment again. – Izzy Feb 12 '20 at 08:03
1

As a side note: on recent Android versions /bin is a symlink to /system/bin. – Irfan Latif Feb 12 '20 at 19:52

SHELL Command works fine as a standalone command, but fails when put into a shell script?

1 Answers1