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