• updateDisplay.sh

More involved script for updating SPC Tools. This includes some very user/system based items, so unless you are doing work just like I do, there is stuff in here you don't need.

Highlights

• It computes all of the images before moving them, which makes loading from a slow internet connection more stable
• Command line argument lets you specific subdirectories from /data/
• If more than one version is running, it will provide a warning. Two copies writing to the same directory can cause lots of confusion
• The system will run for 12 hours and then quit. It keeps this program from running in the background forever.

# Eric E. Palmer, Updated Feb 7th, 2016
# This waits a few seconds and updates the SPC output files
# This will shutdown after a week
# version 1.0

time=86400                    # week
time=`echo 60*60*12 | bc`     # 12 hours


# Define the subdirectory.  
#If given, it will use a subdirectory in data
sub=$1
if [ "$sub" == "" ];
then
   running=`ps ax | grep $0 | grep -v grep | wc -l`
   num=`echo $running - 2 | bc`

   # I can't tell if someone is using data/
   # Just give a warning
   if [ "$num" -gt "0" ];
   then
      echo "################################"
      echo "##### Running in data/ directory"
      echo "There are $num other users of $0.  You may have a conflict"
      ps ax | grep $0 | grep -v grep
      echo "################################"
      running=0
   fi
else
   running=`ps ax | grep $0 | grep -v grep | grep $sub | wc -l`
   sub="$sub/";
fi

# Log the current start time, in seconds
start=`date +%s`

# Check to see if currently running in that directory

#echo "### $running"
if [ "$running" -gt "2" ];
then
   echo "We have a version of $0 $1 already running"
   ps ax | grep $0 | grep -v grep
   exit
fi


# Test to see if you are running on a Mac Server, or a normal mac.
path="/Library/Server/Web/Data/Sites/Default/data/$sub"
if [ -e $path ];
then
   path="/Library/Server/Web/Data/Sites/Default/data/$sub"
   echo "  Machine:  Server "
else
   path="/Library/WebServer/Documents/data/$sub"
   echo "  Machine:  Local "
fi
# Test to see if the final path exists, error if it doesn't
if [ ! -e $path ];
then
   echo $path does not exit
   exit
fi
valid=0;

echo "Using $path"
# Loop forever
while [ 1 ]
do
   # Create a secondary file and move it rather than destorying/overwrite
   # This allows a longer web-download
   if [ -e LMRK_DISPLAY1.pgm ];
   then
      valid=1
      convert LMRK_DISPLAY1.pgm landmarks.jpg
      /bin/mv -f $path/landmarks.jpg $path/old-landmarks.jpg
      /bin/mv -f landmarks.jpg $path/landmarks.jpg
   fi

   # Create a secondary file and move it rather than destorying/overwrite
   # This allows a longer web-download
   if [ -e LMRK_DISPLAY1.pgm ];
   then
      valid=1
      convert LMRK_DISPLAY1.pgm autoregister.jpg
      /bin/mv -f $path/autoregister.jpg $path/old-autoregister.jpg
      /bin/mv -f autoregister.jpg $path/autoregister.jpg
   fi

   if [ -e TEMPFILE.pgm ];
   then
      valid=1
      convert TEMPFILE.pgm register.jpg
      /bin/mv -f $path/register.jpg $path/old-register.jpg
      /bin/mv -f register.jpg $path/register.jpg
      # Not worrying about this
   fi
   if [ -e TEMPFILE.ppm ];
   then
      valid=1
      convert TEMPFILE.ppm $path/registerC.jpg
   fi

   # Push any file names 1.jpg to be displayed on the server
   if [ -e 1.jpg ];
   then
      valid=1
      cp 1.jpg $path/1.jpg
   fi

   # How long to wait between pushes 
   sleep 3

   # Compute how long this has been running
   current=`date +%s`
   delta=`echo $current - $start | bc`
   #echo $start, $current, $delta

   # quit if it has been running for a long time (week/month)
   if [ "$delta" -gt "$time" ];
   then
      echo "You've run out of time"
      exit;
   fi

   # If we run through the loop and find no files to process, quit
   if [ "$valid" -eq "0" ];
   then
      echo "No valid files -- processing stopping"
      break;
   fi



done