Config file, versioning, verbosity check, repo

Added check for config file existance before attempting to use.
Added better instructions for config file usage.
Add script version numbers.
Check for invalid verbosity levels.
Added GitHub repo info.

update_ombi.sh

@@ -1,46 +1,73 @@
 #!/bin/bash
 
-## update_ombi systemd script   ##
-## Make configuration updates   ##
-## by changing update_ombi.conf ##
-## and store it in the same dir ##
-## that runs update_ombi.sh 	##
+####################################
+##   update_ombi systemd script   ##
+## GitHub: Unimatrix0/update_ombi ##
+####################################
 
+####################################
+##  Override default settings by  ##
+##  creating update_ombi.conf in  ##
+##  the same directory that the   ##
+##  script is running in and set  ##
+##  the required variables there  ##
+####################################
 
-## The systemd unit for Ombi  ##
+##   The systemd unit for Ombi    ##
 ombiservicename="ombi"
 
-## The update_ombi update log file ##
+##    The update_ombi log file    ##
 logfile="/var/log/ombiupdater.log"
 
-## The path and file of your ombi.service file ##
+####################################
+##  The remaining variables only  ##
+##  need to be set or overridden  ##
+##  if the script is unable to    ##
+##  parse the ombi.service file   ##
+##  for the correct settings      ##
+####################################
+## !! This should never happen !! ##
+####################################
+
+##  The service file's full path  ##
 ombiservicefile="/etc/systemd/system/$ombiservicename.service"
 
-## Ombi's installed directory ##
+##     Ombi install directory     ##
 defaultinstalldir="/opt/Ombi"
 
-## User and Group Ombi runs as ##
+##   User and Group Ombi runs as  ##
 defaultuser="ombi"
 defaultgroup="nogroup"
 
-## Level of verbosity ##
+##       Level of verbosity       ##
+##        By default, none        ##
+
 declare -i verbosity=-1
 
+############################################
 ## Do not modify anything below this line ##
 ##   unless you know what you are doing   ##
+############################################
 
-# Import any custom config to override the defaults, if necessary
-source "$(dirname $0)/update_ombi.conf" >/dev/null 2>&1
+name="update_ombi"
+version="1.0.12"
 
 while [ $# -gt 0 ]; do
   case "$1" in
     --verbosity|-v=*)
-      verbosity="${1#*=}"
+      if [[ ${1#*=} =~ ^-?[0-8]$ ]]; then
+          verbosity="${1#*=}"
+      else
+	      printf "****************************\n"
+          printf "* Error: Invalid verbosity.*\n"
+          printf "****************************\n"
+          exit 1
+	  fi
       ;;
     *)
-      printf "***************************\n"
-      printf "* Error: Invalid argument.*\n"
-      printf "***************************\n"
+      printf "****************************\n"
+      printf "* Error: Invalid argument. *\n"
+      printf "****************************\n"
       exit 1
   esac
   shift
@@ -72,7 +99,22 @@ unzip-strip() (
     fi && rm -rf "$temp"/* "$temp"
 )
 
-.log 6 "Verboity level: [${LOG_LEVELS[$verbosity]}]"
+# Import any custom config to override the defaults, if necessary
+configfile="$(dirname $0)/update_ombi.conf"
+if [ -e $configfile ]; then
+    source $configfile > /dev/null 2>&1
+    .log 6 "Script config file found...parsing..."
+    if [ $? -ne 0 ] ; then
+        .log 3 "Unable to use config file...using defaults..."
+    else
+        .log 6 "Parsed config file"
+    fi
+else
+    .log 6 "No config file found...using defaults..."
+fi
+
+.log 6 "$name v$version"
+.log 6 "Verbosity level: [${LOG_LEVELS[$verbosity]}]"
 scriptuser=$(whoami)
 .log 7 "Update script running as: $scriptuser"
 if [ -e $ombiservicefile ]; then