updated keystrokes.sh

applescript/keystrokes.sh

@@ -36,6 +36,9 @@ Sleeps for \$SLEEP_SECS (default: 1) between clicks to allow UIs to update and p
 
 Starts each keystroke after \$START_DELAYS seconds (default: 5) to give time to alt-tab back to your UI application and position the cursor
 
+If given num is negative, will run indefinitely until Control-C'd
+
+
 ${0##*/} <num> [<keycode> <keycode> <keycode> ...]"
     exit 3
 }
@@ -48,7 +51,7 @@ num="$1"
 start_delay="${START_DELAY:-5}"
 sleep_secs="${SLEEP_SECS:-1}"
 
-if ! [[ "$num" =~ ^[[:digit:]]+$ ]]; then
+if ! [[ "$num" =~ ^-?[[:digit:]]+$ ]]; then
     usage "invalid non-integer '$num' given for first argument"
 fi
 
@@ -65,7 +68,12 @@ sleep "$start_delay"
 timestamp "starting $num keystrokes"
 echo
 
-for i in $(seq "$num"); do
+for ((i=1; ; i++)); do
+    # if given num is negative, will run for infinity until Control-C'd
+    if [ "$num" -ge 0 ] &&
+       [ "$i" -gt "$num" ]; then
+        break
+    fi
     for key in "${keys[@]}"; do
         if [[ "$key" =~ ^[[:digit:]][[:digit:]]+$ ]]; then
             timestamp "keystroke $i/$num keycode $key"