~/.bashrc 调用 /etc/bashrc 导致在deb10上root的PATH变得和普通用户一样，要改用 /etc/profile 才对。

.bashrc

@@ -11,9 +11,9 @@
 # User specific aliases and functions
 
 # Execute system startup script:
-if [ -f /etc/bashrc ]
+if [ -f /etc/profile ]
 then
-	. /etc/bashrc
+	. /etc/profile
 fi
 
 # Define primary prompt (default is '$'):

add-user.sh

@@ -5,7 +5,7 @@ if [ v$1 != v ]
 then
   NewUser=$1
 else
-  read -p "Enter path-to-faronear " NewUser
+  read -p "Enter new user name: " NewUser
 fi
 
 echo "<<< Add a new user"