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- sysboot.sh : Send an e-mail at system startup with boot time and boot ID.

sysboot.sh

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+#!/bin/bash
+
+# SysBoot
+xappname="SysBoot";
+xver='r2023-08-30 fr2023-08-30'; # BETA
+# by Valerio Capello - http://labs.geody.com/ - License: GPL v3.0
+# System Boot.
+# Requires sendmail (for e-mail alerts)
+# 
+# To run this script at every system boot:
+# Add @reboot /PATH/sysboot.sh>/dev/null to CronTab ( crontab -e )
+# Or call /PATH/sysboot.sh>/dev/null from /etc/rc.local
+
+
+# Config
+
+mailsender="[email protected]"; # Mail sender
+mailreceiv="[email protected]"; # Mail recipient
+mailcommand="/usr/lib/sendmail"; # Mail command ( /usr/lib/sendmail normally, and it shouldn't be modified)
+
+mailsubjhead=""; # Mail subject head (normally empty)
+mailsubjtail=""; # Mail subject tail (normally empty)
+
+alertoutcon=true; # Send Alerts to Console
+alertouteml=true; # Send Alerts via E-mail
+tlogen=true; # Enable logs
+tlogfn="/var/log/sysboot.log"; # Log path and file name
+logsep=" "; # Separator between log elements
+
+
+# Main
+
+# currdate=$( date "+%a %Y-%m-%d %H:%M:%S %Z (UTC%:z)" | tr -d '\n' );
+
+sysname=$( cat /proc/sys/kernel/hostname | tr -d '\n' );
+# machid=$( cat /etc/machine-id | tr -d '\n' );
+bootid=$( cat /proc/sys/kernel/random/boot_id | tr -d '\n' );
+lastboot=$( uptime -s | tr -d '\n' );
+
+# Output
+
+# Output: Console
+if ( $alertoutcon ); then
+echo -e "${xappname} ${xver}\n\nSystem: ${sysname}\nBoot: ${lastboot}\nBoot ID: ${bootid}";
+fi
+
+# Output: E-Mail
+if ( $alertouteml ); then
+echo -e "Subject: ${mailsubjhead}${xappname} Alert - System: ${sysname} - Boot: ${lastboot}${mailsubjtail}\n\n${xappname} Alert\nSystem: ${sysname}\nBoot: ${lastboot}\nBoot ID: ${bootid}" | $mailcommand -F "$mailsender" -t "$mailreceiv";
+fi
+
+# Output: Log
+if ( $tlogen ); then
+oulog="${lastboot}${logsep}${bootid}";
+if [ -f $tlogfn ]; then
+loglastentry="$( tail --lines=1 $tlogfn | tr -d '\n' )";
+else
+loglastentry="";
+fi
+if [[ "$oulog" != "$loglastentry" ]]; then
+echo -e "$oulog" >> $tlogfn ;
+fi
+fi