Rename reserved name

etc/systemd/system/check_updates.service

@@ -1,9 +1,9 @@
 [Unit]
-Description=Run checkupdates
+Description=Run check_updates
 
 [Service]
 Type=oneshot
-ExecStart=checkupdates
+ExecStart=check_updates
 
 [Install]
 WantedBy=multi-user.target

etc/systemd/system/check_updates.timer

@@ -1,5 +1,5 @@
 [Unit]
-Description=Run checkupdates
+Description=Run check_updates
 
 [Timer]
 OnCalendar=Mon *-*-* 05:00:00

usr/local/bin/check_updates

@@ -3,15 +3,15 @@
 # usage
 usage() {
 USAGE=$(cat <<EOF
-Usage: checkupdates [CONFIG_FILE (absolute path)]
+Usage: check_updates [CONFIG_FILE (absolute path)]
 
-If no CONFIG_FILE is given, HOME/.checkupdates.conf is used. This fallback option
+If no CONFIG_FILE is given, HOME/.check_updates.conf is used. This fallback option
 has to exist or the script will exit.
 
 Configuration can be done in any file and any pre-defined variable can be overwritten.
 
 The following are at least required for the script to work:
-- CHECKUPDATES_MAIL_ADDRESS="" // mail.rc has to be configured
+- CHECK_UPDATES_MAIL_ADDRESS="" // mail.rc has to be configured
 
 You can copy this script to '/usr/local/bin' and use create a custom CONFIG_FILE as user. Examples can be found in '/usr/share/doc/<scriptname>'.
 EOF
@@ -24,7 +24,7 @@ set -e;
 HOSTNAME=$(hostname)
 UPDATES=$(checkupdates)
 UPDATES_AMOUNT=$(checkupdates|wc -l)
-CHECKUPDATES_MAIL_ADDRESS="";
+CHECK_UPDATES_MAIL_ADDRESS="";
 
 # check for config file
 source_config() {
@@ -46,10 +46,10 @@ source_config() {
 	source "$config";
 	set +a;
 }
-source_config "$1" "$HOME/.checkupdates.conf"
+source_config "$1" "$HOME/.check_updates.conf"
 
 if [ "$UPDATES_AMOUNT" -gt "0" ]; then
-	mailx -s "[updates $HOSTNAME]" $CHECKUPDATES_MAIL_ADDRESS << EOF
+	mailx -s "[updates $HOSTNAME]" $CHECK_UPDATES_MAIL_ADDRESS << EOF
 There are $UPDATES_AMOUNT updates available on $HOSTNAME.
 
 $UPDATES