recording scripts now more robust

.scripts/video

@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/bin/sh
 
 # This script records video.
 # It also names files smartly to prevent overwrites.
 
 # Picks a file name for the output file based on availability:
-while [[ -f $HOME/video$n.mkv ]]
+while [ -f "$HOME/video$n.mkv" ]
 do
 	n=$((n+1))
 done
@@ -13,9 +13,11 @@ filename="$HOME/video$n.mkv"
 # The actual ffmpeg command:
 ffmpeg \
 -f x11grab \
--s $(xdpyinfo | grep dimensions | awk '{print $2;}') \
+-s "$(xdpyinfo | grep dimensions | awk '{print $2;}')" \
 -i :0.0 \
- -c:v libx264 -qp 0 -r 30 $filename &
+ -c:v libx264 -qp 0 -r 30 "$filename" &
 
+# PID outputted for use by the killrecording script
+echo $! > ~/.recordingpid
 # Updating i3blocks recording icon:
 echo ⏺️ > ~/.recordingicon && pkill -RTMIN+9 i3blocks