update capture script

1 files changed, 6 insertions, 0 deletions

diff --git a/capture.sh b/capture.sh
index 1043c88..eff84a0 100755
--- a/capture.sh
+++ b/capture.sh
@@ -2,12 +2,18 @@
 #this script repeatedly captures images from a video device (e.g. /dev/video0) at regular intervals
 #and it compresses images into an .tar.gz after some number and deletes those images
 #and it deletes old archives after some number have been made
+#you can provide a directory in which to save the images if desired 
 
 MAX_SIZE=1073741824 #1G in bytes
 TIME_INTERVAL=15 #seconds between taking snapshots
 THRESHOLD_ARCHIVE=5760 #number of images after which archiving should be done. 5760 is one day if pics are every 15s
 THRESHOLD_REMOVE=30 #number of image archive tarballs after which a handful of the oldest archives will be deleted
 
+#set the working directory 
+if [[ ${1} && -d ${1} ]]; then 
+	cd ${1}
+fi
+
 while [[ true ]]; do
 	d=`date +%Y%m%d_%H%M%S`
 	snapshot ${d}.png