Add "ls" to android debugging script

Summary: Makes it easier to debug.

Reviewed By: mweststrate

Differential Revision: D20645818

fbshipit-source-id: db7cb15487508b5d103db482ecf84adfebc09f48

scripts/debugging/android_sonar_dir.sh

@@ -4,10 +4,12 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
-if [ "$#" -ne 4 ]; then
+if [ "$#" -ne 4 ] && [ "$#" -ne 2 ]; then
     echo "Utility for manipulating the sonar directory where certificates and connection config are stored on Android devices."
     echo "Usage: $0 pull APP_PACKAGE SOURCE DEST"
     echo "E.g:   $0 pull com.facebook.flipper.sample device.crt /tmp/device.crt"
+    echo " or"
+    echo "Usage: $0 ls APP_PACKAGE"
     exit 1;
 fi
 PACKAGE=$2
@@ -19,6 +21,9 @@ case "$1" in
     # execute into that subshell.
     echo "cat files/sonar/$SOURCE" | adb shell run-as "$PACKAGE" > "$DEST"
     ;;
+  "ls")
+    echo "ls -la files/sonar" | adb shell run-as "$PACKAGE"
+    ;;
   *)
     echo "Unrecognised command: $1"
     exit 1