diff --git a/SOURCES/main/cmdgrp/ban/add b/SOURCES/main/cmdgrp/ban/add
index c27421c..f77d652 100644
--- a/SOURCES/main/cmdgrp/ban/add
+++ b/SOURCES/main/cmdgrp/ban/add
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()  # $*: ban list
 {
 	include "$LibDir/ban.lib"
diff --git a/SOURCES/main/cmdgrp/ban/delete b/SOURCES/main/cmdgrp/ban/delete
index fc0f76d..9028dc9 100644
--- a/SOURCES/main/cmdgrp/ban/delete
+++ b/SOURCES/main/cmdgrp/ban/delete
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main () # $*: ban list
 {
 	include "$LibDir/ban.lib"
diff --git a/SOURCES/main/cmdgrp/ban/list b/SOURCES/main/cmdgrp/ban/list
index 3feb6df..f29c6d5 100644
--- a/SOURCES/main/cmdgrp/ban/list
+++ b/SOURCES/main/cmdgrp/ban/list
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/ban.lib"
diff --git a/SOURCES/main/cmdgrp/ban/sync b/SOURCES/main/cmdgrp/ban/sync
index 69b3af9..db214ec 100644
--- a/SOURCES/main/cmdgrp/ban/sync
+++ b/SOURCES/main/cmdgrp/ban/sync
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/ban.lib"
diff --git a/SOURCES/main/cmdgrp/game/fix-permissions b/SOURCES/main/cmdgrp/game/fix-permissions
index 739987a..2443891 100644
--- a/SOURCES/main/cmdgrp/game/fix-permissions
+++ b/SOURCES/main/cmdgrp/game/fix-permissions
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/game.lib"
diff --git a/SOURCES/main/cmdgrp/game/run b/SOURCES/main/cmdgrp/game/run
index 0427413..e6e8ff0 100644
--- a/SOURCES/main/cmdgrp/game/run
+++ b/SOURCES/main/cmdgrp/game/run
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/game.lib"
diff --git a/SOURCES/main/cmdgrp/game/update b/SOURCES/main/cmdgrp/game/update
index 52ffa1c..ad83474 100644
--- a/SOURCES/main/cmdgrp/game/update
+++ b/SOURCES/main/cmdgrp/game/update
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/game.lib"
diff --git a/SOURCES/main/cmdgrp/game/validate b/SOURCES/main/cmdgrp/game/validate
index 06e164f..0c6fbb4 100644
--- a/SOURCES/main/cmdgrp/game/validate
+++ b/SOURCES/main/cmdgrp/game/validate
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/game.lib"
diff --git a/SOURCES/main/cmdgrp/instance/add b/SOURCES/main/cmdgrp/instance/add
index a9f1e33..a36f027 100644
--- a/SOURCES/main/cmdgrp/instance/add
+++ b/SOURCES/main/cmdgrp/instance/add
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/chat b/SOURCES/main/cmdgrp/instance/chat
index 14b355d..ccab197 100644
--- a/SOURCES/main/cmdgrp/instance/chat
+++ b/SOURCES/main/cmdgrp/instance/chat
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/delete b/SOURCES/main/cmdgrp/instance/delete
index c11a45c..b1d601d 100644
--- a/SOURCES/main/cmdgrp/instance/delete
+++ b/SOURCES/main/cmdgrp/instance/delete
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/disable b/SOURCES/main/cmdgrp/instance/disable
index 422457c..6f78b1a 100644
--- a/SOURCES/main/cmdgrp/instance/disable
+++ b/SOURCES/main/cmdgrp/instance/disable
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/enable b/SOURCES/main/cmdgrp/instance/enable
index 6eca309..5b1af74 100644
--- a/SOURCES/main/cmdgrp/instance/enable
+++ b/SOURCES/main/cmdgrp/instance/enable
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/list b/SOURCES/main/cmdgrp/instance/list
index 66f09ce..6b92b18 100644
--- a/SOURCES/main/cmdgrp/instance/list
+++ b/SOURCES/main/cmdgrp/instance/list
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/restart b/SOURCES/main/cmdgrp/instance/restart
index 2411ca4..4b3b3ea 100644
--- a/SOURCES/main/cmdgrp/instance/restart
+++ b/SOURCES/main/cmdgrp/instance/restart
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/start b/SOURCES/main/cmdgrp/instance/start
index 909dadf..cea9994 100644
--- a/SOURCES/main/cmdgrp/instance/start
+++ b/SOURCES/main/cmdgrp/instance/start
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/instance/stop b/SOURCES/main/cmdgrp/instance/stop
index 5ae0a35..2daa058 100644
--- a/SOURCES/main/cmdgrp/instance/stop
+++ b/SOURCES/main/cmdgrp/instance/stop
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	true
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/instance.lib"
diff --git a/SOURCES/main/cmdgrp/maprotate/load b/SOURCES/main/cmdgrp/maprotate/load
index 544d37e..797262a 100644
--- a/SOURCES/main/cmdgrp/maprotate/load
+++ b/SOURCES/main/cmdgrp/maprotate/load
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main () # $*: Instance[s]
 {
 	include "$LibDir/maprotate.lib"
diff --git a/SOURCES/main/cmdgrp/maprotate/save b/SOURCES/main/cmdgrp/maprotate/save
index 693314c..4183735 100644
--- a/SOURCES/main/cmdgrp/maprotate/save
+++ b/SOURCES/main/cmdgrp/maprotate/save
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main () # $*: Instance[s]
 {
 	include "$LibDir/maprotate.lib"
diff --git a/SOURCES/main/cmdgrp/password/admin b/SOURCES/main/cmdgrp/password/admin
index 5474d31..4d8abaa 100644
--- a/SOURCES/main/cmdgrp/password/admin
+++ b/SOURCES/main/cmdgrp/password/admin
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/password.lib"
diff --git a/SOURCES/main/cmdgrp/password/game b/SOURCES/main/cmdgrp/password/game
index 109d2e0..01db80a 100644
--- a/SOURCES/main/cmdgrp/password/game
+++ b/SOURCES/main/cmdgrp/password/game
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/password.lib"
diff --git a/SOURCES/main/cmdgrp/workshop/add b/SOURCES/main/cmdgrp/workshop/add
index 06c23f4..97e5f7b 100644
--- a/SOURCES/main/cmdgrp/workshop/add
+++ b/SOURCES/main/cmdgrp/workshop/add
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/workshop.lib"
diff --git a/SOURCES/main/cmdgrp/workshop/delete b/SOURCES/main/cmdgrp/workshop/delete
index de9d364..5e3d6c3 100644
--- a/SOURCES/main/cmdgrp/workshop/delete
+++ b/SOURCES/main/cmdgrp/workshop/delete
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/workshop.lib"
diff --git a/SOURCES/main/cmdgrp/workshop/list b/SOURCES/main/cmdgrp/workshop/list
index dd3181e..7c596de 100644
--- a/SOURCES/main/cmdgrp/workshop/list
+++ b/SOURCES/main/cmdgrp/workshop/list
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	false
+}
+
 function cmd_main ()
 {
 	include "$LibDir/workshop.lib"
diff --git a/SOURCES/main/cmdgrp/workshop/sync b/SOURCES/main/cmdgrp/workshop/sync
index 70df8da..d725b67 100644
--- a/SOURCES/main/cmdgrp/workshop/sync
+++ b/SOURCES/main/cmdgrp/workshop/sync
@@ -34,6 +34,16 @@ function cmd_help ()
 	echo "TODO: description"
 }
 
+function cmd_need_superuser ()
+{
+	false
+}
+
+function cmd_need_steamuser ()
+{
+	true
+}
+
 function cmd_main ()
 {
 	include "$LibDir/workshop.lib"
diff --git a/SOURCES/main/kf2-srv b/SOURCES/main/kf2-srv
index 79eeadf..4890d36 100755
--- a/SOURCES/main/kf2-srv
+++ b/SOURCES/main/kf2-srv
@@ -37,19 +37,16 @@ function include () # $1: Lib
 function is_help () # $1: Arg
 {
 	echo "$1" | grep -Piqo '^(-h|--help|help)$'
-	return $?
 }
 
 function is_version () # $1: Arg
 {
 	echo "$1" | grep -Piqo '^(-v|--version|version)$'
-	return $?
 }
 
 function function_exists () # $1: function name
 {
 	type "$1" &> /dev/null
-	return $?
 }
 
 function indent () # $1: Level
@@ -63,21 +60,21 @@ function indent () # $1: Level
 
 function groups_list ()
 {
-	find "$GrpDir"    \
-		-mindepth 1             \
-		-maxdepth 1             \
-		-type d                 \
-		-printf "%f\n" |        \
+	find "$GrpDir"       \
+		-mindepth 1      \
+		-maxdepth 1      \
+		-type d          \
+		-printf "%f\n" | \
 	sort
 }
 
 function commands_list () # $1: Command group
 {
-	find "$GrpDir/$1" \
-		-mindepth 1             \
-		-maxdepth 1             \
-		-type f                 \
-		-printf "%f\n" |        \
+	find "$GrpDir/$1"    \
+		-mindepth 1      \
+		-maxdepth 1      \
+		-type f          \
+		-printf "%f\n" | \
 	sort
 }
 
@@ -148,7 +145,13 @@ elif [[ -d "$GroupPathname" ]]; then
 			fi
 		else
 			if function_exists "cmd_main"; then
-				cmd_main "$@"
+				if function_exists "cmd_need_superuser" && cmd_need_superuser; then
+					run_as_root "$ScriptFullname" "$Group" "$Command" "$@"
+				elif function_exists "cmd_need_steamuser" && cmd_need_steamuser; then
+					run_as_steamuser "$ScriptFullname" "$Group" "$Command" "$@"
+				else
+					cmd_main "$@"
+				fi
 			else
 				echo "No implementation for the command $Command"
 			fi
diff --git a/SOURCES/main/lib/globals.lib b/SOURCES/main/lib/globals.lib
index 32b4403..6d6a85d 100644
--- a/SOURCES/main/lib/globals.lib
+++ b/SOURCES/main/lib/globals.lib
@@ -19,6 +19,30 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+function run_as_steamuser () # $@: command
+{
+	include /etc/steamcmd/steamcmd.conf
+	
+	if [[ "$USER" == "$SteamUser" ]]; then
+		"$@"
+	elif [[ -n $(groups "$USER" | grep -Fo 'wheel') ]] || [[ "$EUID" -eq 0 ]]; then
+		sudo -u "$SteamUser" "$@"
+	else
+		echo "You must be a $SteamUser, root or sudo-user to run this command."
+	fi
+}
+
+function run_as_root () # $@: command
+{
+	if [[ "$EUID" -eq 0 ]]; then
+		"$@"
+	elif [[ -n $(groups "$USER" | grep -Fo 'wheel') ]]; then
+		sudo "$@"
+	else
+		echo "You must be root or sudo-user to run this command."
+	fi
+}
+
 InstallDir=":DEFINE_PREFIX:/games/kf2-srv${KF2POSTFIX}"
 AppBin="$InstallDir/Binaries/Win64/KFGameSteamServer.bin.x86_64"
 
diff --git a/TODO b/TODO
index 129ef91..678e96a 100644
--- a/TODO
+++ b/TODO
@@ -1,9 +1,8 @@
 - selinux
 - sudo for steamuser
 - kick by level
-- split the script into separate files
 - man pages
-- english help
+- write help pages for each command
 - check ban EGS players (mb bugs)
 - ban history
 - temporary ban