Initial Versions of Script

README.md

@@ -1,3 +1,6 @@
 # User Management Script for Bash
-Simple user management script for Bash, to be able to learn how to use Bash.
-by Sangelo & LogolicusZ as a school project.
+Simple user management script for Bash, to be able to learn how to use Bash.<br>
+by Sangelo as a school project.
+
+Takes users from a MYSQL table and creates them on a Linux system.<br>
+You can also delete and list all users.

database/initial.sql

@@ -0,0 +1,7 @@
+CREATE DATABASE if not exists usermgmt;
+USE usermgmt;
+CREATE TABLE users (
+    id INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    username VARCHAR(20) NOT NULL,
+    PRIMARY KEY (id)
+);

download-script.sh

@@ -1,4 +1,8 @@
 #!/bin/bash
 
+WEB_IP=""
+WEB_PORT=""
+
 echo "Downloading the scripts..."
-wget "$1"/scripts .
+wget "$WEB_IP":"$WEB_PORT"/database/initial.sql
+wget "$WEB_IP":"$WEB_PORT"/user-mgmt.sh

management/user-mgmt.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+# User Management Script, powered by an SQL database
+# (c) Sangelo | Read Licenses for more info: https://gitpot.dev/sangelo/user-mgmt
+
+# Variables
+E_BADARGS=65
+MYSQL=`which mysql`
+MYSQL_USER="sangelo"
+USAGE="
+$0 -- user management script
+Usage:
+    init
+    add     {username} {name} {description}
+    delete  {username}
+    list
+"
+
+# Check for correct number of arguments and action
+if [ $# -lt 1 ]
+then
+  echo "$USAGE"
+  exit $E_BADARGS
+fi
+
+# Switch between different actions
+case "$1" in
+  "init")
+    Q1="CREATE TABLE IF NOT EXISTS usermgmt.users (username varchar(255), name varchar(255), description varchar(255));"
+    SQL="${Q1}"
+    ;;
+  "add")
+    if [ $# -ne 4 ]
+    then
+      echo "Error: Invalid action."
+      echo "$USAGE"
+      exit $E_BADARGS
+    fi
+    Q1="INSERT INTO usermgmt.users (username, name, description) VALUES ('$2', '$3', '$4');"
+    SQL="${Q1}"
+    ;;
+  "delete")
+    if [ $# -ne 2 ]
+    then
+      echo "Error: Invalid action."
+      echo "$USAGE"
+      exit $E_BADARGS
+    fi
+    Q1="DELETE FROM usermgmt.users WHERE username = '$2';"
+    SQL="${Q1}"
+    ;;
+  "list")
+    if [ $# -ne 1 ]
+    then
+      echo "Error: Invalid action."
+      echo "$USAGE"
+      exit $E_BADARGS
+    fi
+    Q1="SELECT username, name, description FROM usermgmt.users;"
+    SQL="${Q1}"
+    ;;
+  *)
+    echo "Error: Invalid action. Please use a valid argument."
+    echo "$USAGE"
+    exit $E_BADARGS
+    ;;
+esac
+
+$MYSQL -u "$MYSQL_USER" -p -e "$SQL"