sdump: use examid and hostname in the filename and in the drawtext.

bin/screendump

@@ -5,6 +5,8 @@ set -x
 
 DATE=`date +%Y-%m-%dT%H:%M:%S`
 BASEDIR=/local/sdump
+HOSTNAME=`hostname`
+EXAMID=`cat /local/examid`
 
 start() {
     # Prepare the output directory
@@ -39,7 +41,7 @@ start() {
 
     # Start the screen dump
     #CMD="ffmpeg -framerate 1 -f x11grab -i :0.0 -vcodec libx265 -crf 28 \"${BASEDIR}/${DATE}.mkv\""
-    CMD="ffmpeg -framerate 1 -f x11grab -i :0.0 -vcodec libx265 -crf 28 -vf \"drawtext='text=%{localtime\:%X}:fontsize=32:fontcolor=red'\" \"${BASEDIR}/${DATE}.mkv\""
+    CMD="ffmpeg -framerate 1 -f x11grab -i :0.0 -vcodec libx265 -crf 28 -vf \"drawtext='text=${EXAMID}-${HOSTNAME}-%{localtime\:%x-%X}:fontsize=32:fontcolor=red'\" \"${BASEDIR}/${EXAMID}-${HOSTNAME}-${DATE}.mkv\""
     #CMD="PATH=\"$PATH:.\" [sysdump] -framerate 1 -f x11grab -i :0.0 -vcodec libx265 -crf 28 -vf \"drawtext='text=%{localtime\:%X}:fontsize=32:fontcolor=red'\" \"${BASEDIR}/${DATE}.mkv\""
     su - sdump -c "${CMD}"
 }