Rewrite in an effort to be more readable. Summary:

* Reuse getConfig (though it'll always fall back to /etc)
* Seperate filters (sorry for the long lines)

ytmpd

@@ -1,18 +1,24 @@
 #!/bin/sh
 
-source /etc/ytmp.conf
+. /usr/lib/tlvince/getConfig.sh
+. $(getConfig ytmp)
 
-if ! [ -n "$INTERFACE" ]; then echo "INTERFACE not set in /etc/ytmp.conf" >&2; exit 1; fi
+[ $INTERFACE ] || {
+    echo "$0: error: INTERFACE not set in /etc/ytmp.conf" >&2
+    exit 1
+}
 
 rm /tmp/ytmpurls 2> /dev/null
 
-ngrep -W byline -qil 'get|session' tcp dst port 80 -d $INTERFACE | egrep  --line-buffered -i "(get\ /watch|GET \/[0-9]* .*|^session_token.*)" | sed --unbuffered -e 's/GET \/ HTTP\/1\.1\.//' -e 's/.*video_id%22%3A%22\([_a-zA-Z0-9-]\{11,11\}\).*/host=youtube\nid=\1/' -e 's/.*\/\([0-9]*\) .*/host=vimeo\nid=\1/g' -e 's/.*=\([_a-zA-Z0-9-]\{11,11\}\)[ &].*/host=youtube\nid=\1/' >> /tmp/ytmpurls &
+FILTERS="
+    s/GET \/ HTTP\/1\.1\.//                                                 # Unwanted GET headers
+    s/.*\/\([0-9]*\) .*/host=vimeo\nid=\1/g                                 # Vimeo video ID
+    s/.*=\([_a-zA-Z0-9-]\{11,11\}\)[ &].*/host=youtube\nid=\1/              # Youtube video ID
+    s/.*video_id%22%3A%22\([_a-zA-Z0-9-]\{11,11\}\).*/host=youtube\nid=\1/  # Youtube channel video ID
+"
 
-exit 0
+ngrep -W byline -qil 'get|session' tcp dst port 80 -d "$INTERFACE" | \
+egrep --line-buffered -i "(get\ /watch|GET \/[0-9]* .*|^session_token.*)" | \
+sed --unbuffered -e "$FILTERS" >> /tmp/ytmpurls &
 
-#'-e 's/GET \/ HTTP\/1\.1\.//'' -> get rid of unwanted 'GET / HTTP/1.1.' matches
-#'-e 's/.*\/\([0-9]*\) .*/host=vimeo\nid=\1/g'' -> filter vimeo video ids
-#'-e 's/.*=\([_a-zA-Z0-9-]\{11,11\}\)[ &].*/host=youtube\nid=\1/' -> filter
-#	youtube video ids
-#'-e 's/.*video_id%22%3A%22\([_a-zA-Z0-9-]\{11,11\}\).*/host=youtube\nid=\1/''
-#	-> filter youtube channel video ids
+exit 0