initial commit

2025-10-26 14:41:49 +00:00
commit e548aec9f8
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+#!/usr/bin/env bash
+
+# Author        : Allan Christensen
+# First Created : 17102020 (DD-MM-YYYY)
+# Description   : Installs Postfix and optionally Mailutils on Ubuntu 24.04
+# License       : MIT License (see LICENSE file for details)
+
+#
+# Are we root
+#
+if [[ $(id -u) -ne 0 ]]; then echo "" && echo "Must be root or use sudo" && echo "" ; exit ; fi
+
+#
+# Define variables and functions
+#
+install_utils="no"
+
+#
+# Function to check if a service is already running or not
+#
+serviceyes () { printf "\n%s" $service ; printf " is already running cannot continue...\n\n"; }
+servicealive () { status=$(systemctl is-active $service); if [[ "$status" == "active" ]]; then serviceyes ; exit 1; fi; }
+
+#
+# Usage function
+#
+usage() {
+    printf "\nUsage:\n"
+    printf "  sudo ./postfixinstall [-m yes|no]\n\n"
+    printf "Options:\n"
+    printf "  -m <yes|no>   Install Mailutils (defaults to no)\n"
+    printf "  -h            Show this help message\n\n"
+    printf "Examples:\n"
+    printf "  sudo ./postfixinstall        # install Postfix only\n"
+    printf "  sudo ./postfixinstall -m yes # install Postfix + Mailutils\n\n"
+    exit 1
+}
+
+#
+# If Postfix is already running then die
+#
+service="postfix" ; servicealive
+
+#
+# Let's go
+#
+clear
+
+#
+# Parse options
+#
+while getopts ":m:h" opt; do
+    case "${opt}" in
+        m)
+            arg="${OPTARG}"
+            if [[ -z "$arg" ]]; then
+                printf "\nOption -m requires an argument (yes/no).\n"
+                usage
+            fi
+            case "${arg,,}" in
+                y|yes) install_utils="yes" ;;
+                n|no)  install_utils="no" ;;
+                *) usage ;;
+            esac
+            ;;
+        h)
+            usage
+            ;;
+        :)
+            printf "\nOption -%s requires an argument (yes/no).\n" "$OPTARG"
+            usage
+            ;;
+        \?)
+            printf "\nInvalid option: -%s\n" "$OPTARG"
+            usage
+            ;;
+    esac
+done
+
+#
+# Require -m flag
+#
+if [[ "$OPTIND" -eq 1 ]]; then
+    printf "\nMissing required option: -m <yes|no>\n"
+    usage
+fi
+
+#
+# Install Postfix (non-interactive) and backup main.cf
+#
+printf "\nInstalling Postfix...\n"
+DEBIAN_FRONTEND=noninteractive apt-get install -y postfix >/dev/null 2>&1
+[[ -f /etc/postfix/main.cf ]] && cp -p /etc/postfix/main.cf /etc/postfix/main.cf.bak.$(date +%d-%m-%Y-%H%M%S)
+systemctl enable postfix >/dev/null 2>&1 && systemctl restart postfix
+
+#
+# Optionally install Mailutils
+#
+if [[ "$install_utils" == "yes" ]]; then apt-get install -y mailutils >/dev/null 2>&1 ; fi
+
+#
+# All done
+#
+printf "\nAll Done...\n"
+
+#
+# End of script
+#