freebsd – nixCraft

FreeBSD Full / Incremental Tape Backup Shell Script

in Backup last updated July 15, 2009

A FreeBSD shell script to dump Filesystem with full and incremental backups to tape device connected to server.

FreeBSD Backup All MySQL Databases To a NAS Server

in MySQL last updated January 24, 2009

A Shell script to backup all MySQL databases to a NAS server mounted via mount_smbfs command.

BSD PF IPv6 and IPv4 /etc/pf.conf Firewall Script

in Firewall last updated February 2, 2009

/etc/pf.conf IPv6 and IPv4 dual stack firewall script for OpenBSD, NetBSD, FreeBSD operating system examples and shell script.

Shell Script To Update Spamhaus Lasso Spam Database for PF Firewall

in Firewall last updated January 23, 2009

A Shell Script To Update Spamhaus Lasso Spam Database for PF Firewall.

Shell Script To Start FastCGI PHP Server For Nginx Web Server

in Web Server last updated October 6, 2008

A FreeBSD / Linux shell script to start / stop / restart FastCGI PHP under Nginx web server.

OpenBSD PF Firewall Script – /etc/pf.conf File

in Firewall last updated May 10, 2009

A sample full working PF firewall /etc/pf.conf script to protect dedicated / colo *BSD (FreeBSD/OpenBSD/NetBSD) server.

Shell Script To Read IP Address ( Find Ip Address Script )

in Script last updated April 10, 2008

#!/bin/sh
# Shell script scripts to read ip address
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
# Get OS name
OS=`uname`
IO="" # store IP
case $OS in
   Linux) IP=`ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`;;
   FreeBSD|OpenBSD) IP=`ifconfig  | grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}'` ;;
   SunOS) IP=`ifconfig -a | grep inet | grep -v '127.0.0.1' | awk '{ print $2} '` ;;
   *) IP="Unknown";;
esac
echo "$IP"

Shell Script To Notify Admin User if UNIX / Linux System Load Crossed Certain Limit

in Monitoring last updated October 15, 2009

#!/bin/bash
# 
# Script to notify admin user if Linux,FreeBSD load crossed certain limit
# It will send an email notification to admin.
#
# Copyright 2005 (c) nixCraft project
# This is free script under GNU GPL version 2.0 or above. 
# Support/FeedBack/comment :  http://cyberciti.biz/fb/
# Tested os: 
# * RedHat Linux
# * Debain Linux
# * FreeBSD
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
 
# Set up limit below
NOTIFY="6.0"
 
# admin user email id
EMAIL="root"
 
# Subject for email
SUBJECT="Alert $(hostname) load average"
 
# -----------------------------------------------------------------
 
# Os Specifc tweaks do not change anything below ;)
OS="$(uname)"
TRUE="1"
if [ "$OS" == "FreeBSD" ]; then
        TEMPFILE="$(mktemp /tmp/$(basename $0).tmp.XXX)"
	FTEXT='load averages:'
elif [ "$OS" == "Linux" ]; then
        TEMPFILE="$(mktemp)"
	FTEXT='load average:'
fi
 
 
# get first 5 min load
F5M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f1) | sed 's/ //g'"
# 10 min
F10M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f2) | sed 's/ //g'"
# 15 min
F15M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f3) | sed 's/ //g'"
 
# mail message
# keep it short coz we may send it to page or as an short message (SMS)
echo "Load average Crossed allowed limit $NOTIFY." >> $TEMPFILE
echo "Hostname: $(hostname)" >> $TEMPFILE
echo "Local Date & Time : $(date)" >> $TEMPFILE
 
# Look if it crossed limit
# compare it with last 15 min load average
RESULT=$(echo "$F15M > $NOTIFY" | bc)
 
# if so send an email
if [ "$RESULT" == "$TRUE" ]; then
        mail -s "$SUBJECT" "$EMAIL" < $TEMPFILE
fi
 
# remove file 
rm -f $TEMPFILE

Shell script to General FreeBSD and Linux System information

in Monitoring last updated February 26, 2009

Shell script to display general FreeBSD and Linux System information such as, Hostname, OS version, Kernel version, Processor/CPU, Total RAM, System load, network interface, total logged in users, Hard disks, Runlevel etc in neat format.

How do I use the script?

You need to download following two files for FreeBSD operating systems:

File # 1 Save this file as /usr/local/etc/bashmonscripts
File # 2 : Save this file as /usr/local/etc/defaults.conf

For Linux system, you need to update /usr/local/etc/defaults.conf to point out exact binary path location. /usr/local/etc/bashmonscripts is nothing but functions library used by this script. bashmonscripts works under both Linux and FreeBSD.

#!/bin/bash
# Shell script to General FreeBSD and Linux System information such as:
# Hostname, OS version, Kernel version, Processor/CPU, Total RAM,
# System load, network interface, total logged in users, Hard disks,
# Runlevel etc. I will write separate scripts for detailed system 
# information :D
# Copyright (c) 2005 nixCraft project
# This script is licensed under GNU GPL version 2.0 or above
# For more info, please visit: 
#            http://cyberciti.biz/shell_scripting/bmsinstall.php
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
 
SPATH="/usr/local/etc/bashmonscripts"
INITBMS="$SPATH/defaults.conf" 
[ ! -f $INITBMS ] && exit 1 || . $INITBMS
 
echo "Hostname:" $(getHostName)
echo "OS Name:" $($UNAME)
echo "OS Version:" $($UNAME -mr)
echo "Processor:" $(getCpuInfo)
echo "Total Physical Memory (RAM):" $(getRealRamInfo)
echo "System Load:" $(getSystemLoad)
echo "Date & Time:" $($DATE)
echo "Network interface:" $(getNumberOfInterfaces)
echo "Total logged in users:" $(getNumberOfLoggedInUsers)
echo "Total running process:" $(getNumberOfRunningProcess)
echo "Total SCSI/IDE disks:" $(getDiskDrives)
echo "Mounted partitions:" $(getNumberOfParittions)
echo "Loaded dynamic kernel modules/drivers:" $(getNumberOfKernelModules)
echo "OS Rulevel:" $(getOsRunLevel)