diff --git a/alpine/alpine-adduser-sudo.sh b/alpine/alpine-adduser-sudo.sh
index f08507a..1521be3 100755
--- a/alpine/alpine-adduser-sudo.sh
+++ b/alpine/alpine-adduser-sudo.sh
@@ -1,9 +1,8 @@
 #!/bin/ash
 
-if [ "$EUID" -ne 0 ]
-  then
-  echo "Please run as root"
-  exit
+if ! [ $(id -u) = 0 ]; then
+    echo "Please run as root!"
+exit 1
 fi
 
 apk update
diff --git a/alpine/alpine-configure-git.sh b/alpine/alpine-configure-git.sh
index 956f8a4..83f5302 100755
--- a/alpine/alpine-configure-git.sh
+++ b/alpine/alpine-configure-git.sh
@@ -1,9 +1,8 @@
 #!/bin/ash
 
-if [ "$EUID" -eq 0 ]
-  then
-  echo "Please do NOT run as root"
-  exit
+if [ $(id -u) = 0 ]; then
+    echo "Please do NOT run as root!"
+exit 1
 fi
 
 # git config
diff --git a/alpine/alpine-essentials.sh b/alpine/alpine-essentials.sh
index 2bd563b..e4ee389 100755
--- a/alpine/alpine-essentials.sh
+++ b/alpine/alpine-essentials.sh
@@ -1,9 +1,8 @@
 #!/bin/ash
 
-if [ "$EUID" -ne 0 ]
-  then
-  echo "Please run as root"
-  exit
+if ! [ $(id -u) = 0 ]; then
+    echo "Please run as root!"
+exit 1
 fi
 
 # edit repositories
diff --git a/alpine/alpine-install-docker.sh b/alpine/alpine-install-docker.sh
index 29acdb8..df31419 100755
--- a/alpine/alpine-install-docker.sh
+++ b/alpine/alpine-install-docker.sh
@@ -1,9 +1,8 @@
 #!/bin/ash
 
-if [ "$EUID" -ne 0 ]
-  then
-  echo "Please run as root"
-  exit
+if ! [ $(id -u) = 0 ]; then
+    echo "Please run as root!"
+exit 1
 fi
 
 apk update 
diff --git a/alpine/alpine-user-customizations.sh b/alpine/alpine-user-customizations.sh
index f380848..26dd8c9 100755
--- a/alpine/alpine-user-customizations.sh
+++ b/alpine/alpine-user-customizations.sh
@@ -1,9 +1,8 @@
 #!/bin/bash
 
-if [ "$EUID" -eq 0 ]
-  then
-  echo "Please do NOT run as root"
-  exit
+if [ $(id -u) = 0 ]; then
+    echo "Please do NOT run as root!"
+exit 1
 fi
 
 # add aliases