Fix duplicate processes.

debian/changelog

@@ -1,3 +1,9 @@
+poll-xrandr (1.5) stable; urgency=medium
+
+  * Check for existing processes before running again.
+
+ -- Nicholas Alipaz <[email protected]>  Mon, 23 Mar 2015 09:00:16 -0700
+
 poll-xrandr (1.4) stable; urgency=medium
 
   * Remove the postint that I mistakenly added to wrong project. 

equivs.control

@@ -3,7 +3,7 @@ Priority: optional
 Homepage: https://github.com/nalipaz/poll-xrandr
 Standards-Version: 3.9.2
 Package: poll-xrandr
-Version: 1.4
+iVersion: 1.5
 Maintainer: Nicholas Alipaz <[email protected]>
 Depends: grep, coreutils
 Architecture: all

poll-xrandr

@@ -22,37 +22,43 @@ Application Options:
   exit
 fi
 
-i=4 # default interval for polling.
-
-connected="$(xrandr -q | grep " connected"|cut -d ' ' -f1|xargs)"
-
-# Endless loop
-while : ; do
-  # Re-read the status
-  #new_cat="`cat $f`"
-  connected_recheck="$(xrandr -q | grep " connected"|cut -d ' ' -f1|xargs)"
-
-  # If original contents don't match new we need to run command.
-  if [ "$connected" != "$connected_recheck" ]; then
-    # Set the original contents the same as new to avoid unnecessarily repeating
-    connected=$connected_recheck
-    autorandr --change --force
-  fi
-
-  shift 1
-  while [[ $# > 0 ]]; do
-    key=$1
-
-    case $key in
-      -i=*|--interval=*)
-        i="${key#*=}"
-        ;;
-      *)
-        echo "Unknown option provided, you should fix that."
-        ;;
-    esac
-    shift
+if [ -z "$(pgrep poll-xrandr)" ]; then
+  i=4 # default interval for polling.
+
+  connected="$(xrandr -q | grep " connected"|cut -d ' ' -f1|xargs)"
+
+  # Endless loop
+  while : ; do
+    # Re-read the status
+    #new_cat="`cat $f`"
+    connected_recheck="$(xrandr -q | grep " connected"|cut -d ' ' -f1|xargs)"
+
+    # If original contents don't match new we need to run command.
+    if [ "$connected" != "$connected_recheck" ]; then
+      # Set the original contents the same as new to avoid unnecessarily repeating
+      connected=$connected_recheck
+      autorandr --change --force
+    fi
+
+    shift 1
+    while [[ $# > 0 ]]; do
+      key=$1
+
+      case $key in
+        -i=*|--interval=*)
+          i="${key#*=}"
+          ;;
+        *)
+          echo "Unknown option provided, you should fix that."
+          ;;
+      esac
+      shift
+    done
+
+    sleep $i
   done
 
-  sleep $i
-done
+else
+  echo "poll-xrandr is already running: aborting..."
+  exit
+fi