Rewrite update script:
  Fix nonexistent $SCRIPT variable.
  Better parameters handling.
  Add usage info.
diff --git a/aptly/files/aptly_publish_update.sh b/aptly/files/aptly_publish_update.sh
index 4441d82..4ff2dd3 100644
--- a/aptly/files/aptly_publish_update.sh
+++ b/aptly/files/aptly_publish_update.sh
@@ -1,39 +1,92 @@
 #!/bin/bash
+############################################
+# Aptly publish update helper
+#
+############################################
+
+## Variables ## ============================
+############### ============================
 CLEANUP=0
 VERBOSE=0
 START_API=0
 RECREATE=0
 FORCE_OVERWRITE=0
 PUBLISHER_OPTIONS=""
+COMMAND=`basename $0`
 
+## Functions ## ============================
+############### ============================
 log_info() {
-    logger -p user.info -t ${SCRIPT} "$*"
-    [ $VERBOSE -eq 1 ] && echo "[INFO] $*"
+    logger -p user.info -t ${COMMAND} "$*"
+    [ $VERBOSE -gt 0 ] && echo "[INFO] $*"
 }
 
 log_error() {
-    logger -p user.error -t ${SCRIPT} "$*"
+    logger -p user.error -t ${COMMAND} "$*"
     echo "[ERROR] $*" >&2
 }
 
 at_exit() {
     pgrep -f "aptly api serve" | xargs kill -15
 }
-trap at_exit EXIT
 
-while getopts "a?c?f?r?v?:u:"  option;do
- case "${option}"
- in
- a|\?) START_API=1;;
- c|\?) CLEANUP=1;;
- f|\?) FORCE_OVERWRITE=1;;
- r|\?) RECREATE=1;;
- v|\?) VERBOSE=1;;
- u|\?) URL=$OPTARG;;
- esac
+
+## Usage ## --------------------------------
+Usage() {
+    cat <<EOF
+
+Usage:
+    $COMMAND [-h] [-qv] [-acrf]
+
+Updates aptly publishes.
+
+Parameters:
+    -h ... this help
+    -v ... more verbosity
+    -q ... less verbosity
+    -a ... start aptly api server
+    -c ... cleanup unused snapshots
+    -r ... drop publish and create it again, the only way to add new components
+    -f ... overwrite files in pool directory without notice
+
+EOF
+    exit
+}
+## Usage end ## ----------------------------
+
+## Main ## =================================
+########## =================================
+
+## Getparam ## -----------------------------
+while [[ -n "$1" ]]; do
+    i=$(expr substr $1 1 1)
+    if [[ $i == '-' ]]; then
+        r=$(expr substr $1 2 255)
+        while [[ -n "$r" ]]; do
+            i=$(expr substr $r 1 1)
+            case "$i" in
+                h) Usage ;;
+                q) let "VERBOSE -= 1" ;;
+                v) let "VERBOSE += 1" ;;
+                a) START_API=1 ;;
+                c) CLEANUP=1 ;;
+                r) RECREATE=1 ;;
+                f) FORCE_OVERWRITE=1 ;;
+                u) URL=$2; shift ;;
+            esac
+            r=$(expr substr $r 2 255)
+        done
+    else
+        parms="$parms $1"
+    fi
+    shift
 done
+## Getparam end ## -------------------------
+
+: ${URL:="http://127.0.0.1:8080"}
 
 if [[ $START_API -eq 1 ]]; then
+    trap at_exit EXIT
     nohup aptly api serve --no-lock > /dev/null 2>&1 </dev/null &
 fi
 if [[ $RECREATE -eq 1 ]]; then
@@ -43,21 +96,20 @@
      PUBLISHER_OPTIONS+=" --force-overwrite"
 fi
 
-URL=${URL:-"http://127.0.0.1:8080"}
 aptly-publisher --timeout=1200 publish -v -c /etc/aptly/publisher.yaml --url ${URL} --architectures amd64 $PUBLISHER_OPTIONS
 
 if [[ $? -ne 0 ]]; then
-    echo "Aptly Publisher failed."
+    log_error "Aptly publisher failed."
     exit 1
 fi
 
 if [[ $CLEANUP -eq 1 ]]; then
     SNAPSHOT_LIST="$(aptly snapshot list --raw)"
     if [[ "$SNAPSHOT_LIST" != "" ]]; then
-        log_info "Deleting unpublished snapshots"
+        log_info "Deleting unpublished snapshots."
         echo $SNAPSHOT_LIST | grep -E '*' | xargs -n 1 aptly snapshot drop
     fi
-    log_info "Cleaning Aptly DB"
+    log_info "Cleaning Aptly DB."
     aptly db cleanup
 fi
 exit 0