This is a very simple ping script I created to run on a remote UniFi device to scan for other IP addresses on it’s network. It works on SH environments as well as Bash.
Paste the script in a ping.sh file and then
chmod +x ping.sh
run like so, replacing 192.168.1. with the IP range you want to scan.
sh ping.sh 192.168.1.
#!/bin/sh
# simple ping scan utility
# i.e. 192.168.0.
ipFirstPart=$1
ip=0
while [ $ip -ne 255 ]
do
ip=$(($ip+1))
ping -w1 $ipFirstPart${ip} | grep "64 bytes from"
doneYou should be able to copy and paste the following in a backup.sh file and then execute from cron. Should work out of the box, but you can change the backup directory and the teams.sh path if needed/wanted.
#!/bin/bash
# LibreNMS backup script
# Jan 1, 2019
lDate=`date +%Y%m%d-%H%M` # local date + hour minute
dDate=`date +%Y%m%d` # todays date
# If you have the teams.sh script, you can trigger a backup notification
ALERT="/home/admin/teams.sh -b"
# Directory to backup to
bDir="/backup"
bName="librenms_backup"
# MySQL settings for tar and sqldump
sqlDir="/var/lib/mysql"
sqlDB="librenms"
sqlUN="root"
sqlPW=""
LOG="${bDir}/${lDate}-${bName}.log"
# Directory that contains data
dDir="/opt/librenms"
# tar LibreNMS dir
# tar SQL dir "the whole thing with the innode files
# sql dump of the db for extra redundancy
if [ -d ${bDir} ]; then
echo "backup dir exist, starting to backup"
else
echo "backup dir not available. Quiting"
exit 1
fi
${ALERT} "Starting backup for ${bName} - `date`"
systemctl stop mariadb httpd
# LibreNMS data backup
tar -zcvf ${bDir}/${lDate}-${bName}.tgz ${dDir}
if [ $? -eq 0 ]; then
echo "Tar succesfully backed up ${bDir}"
else
echo "Tar failed while trying to backup ${dDir}"
echo " ${lDate} - Tar failed while trying to backup ${dDir}" >> ${LOG}
${ALERT} "${lDate} - Tar failed while trying to backup ${dDir}"
fi
# MySQL data backup
tar -zcvf ${bDir}/${lDate}-${bName}-mysql.tgz ${sqlDir}
if [ $? -eq 0 ]; then
echo "Tar succesfully backed up ${sqlDir}"
else
echo "Tar failed while trying to backup ${sqlDir}"
echo " ${lDate} - Tar failed while trying to backup ${sqlDir}" >> ${LOG}
${ALERT} "${lDate} - Tar failed while trying to backup ${sqlDir}"
fi
systemctl start mariadb httpd
sleep 5
# SQL dump
mysqldump -u ${sqlUN} -p'4rfvBHU8!' ${sqlDB} > ${bDir}/${lDate}-${bName}.sql
if [ $? -eq 0 ]; then
echo "MySQL DB dumped"
else
echo "Ran into error while doing sql dump"
echo "${lDate} - Ran into error while doing sql dump" >> ${LOG}
${ALERT} "${lDate} - Ran into error while doing sql dump"
fi
echo "Removing old backups"
if ( ls ${bDir} | grep -q ${dDate} );then
find ${bDir}/* -prune -mtime +31 -exec rm {} \;
else
echo "Looks like there are no backup files! Aborting!!!"
${ALERT} "${lDate} - Error: find failed to find any backup files in backup dir. Aborting!!!"
fi
${ALERT} "Finished backup for ${bName} - `date`"The following uses the ubntmod.sh script to check a device then report if it is resolving DNS or not. ip=”192.168.1.” specifies the first part of the ip, the “for ((i=1; i<=254;i++))” tells it to go from 192.168.1.1 – 192.168.1.254, change the beginning and ending number if you want to change the ip range.
ip="192.168.1." && for ((i=10; i<=30;i++)); do if ( fping ${ip}$i -r1 | grep alive); then ./ubntmod.sh -i ${ip}${i} -e ; else echo ${ip}$i not alive; fi ; done
Broken out for easier reading.
ip="192.168.1."for ((i=10; i<=30;i++))doif ( fping ${ip}$i -r1 | grep alive); then./ubntmod.sh -i ${ip}${i} -eelse echo ${ip}$i not alivefidone
If the script is able to log into the device and resolve DNS you should get
192.168.1.1 Resolves DNS
The following script let you turn your screen brightness up/down, but also adjust the color for night time.
Copy and paste code below in a nightlight.sh file
chmod +x nightlight.sh
and run
./nightlight.sh on .5
Code:
#!/bin/sh
export DISPLAY=$(w $(id -un) | awk 'NF > 7 && $2 ~ /tty[0-9]+/ {print $3; exit}')
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
display=`xrandr | grep "\ connected" | cut -d" " -f1
Setup in crontab to automatically trigger when it gets night or morning
* 21 * * * ~/nightlight.sh on .5 # Turn on at night * 7 * * * ~/nightlight.sh off 1 # Turn off in the morning
Copy and save into teams.sh file. Make executable. Change web hook, Run!
The script is a modified Slack script from off the web.
#!/bin/bash
# bash script to send messages to Microsoft Teams.
function usage {
echo "HELP ME!"
echo "description: send messages to Microsoft Teams channels"
echo "special notes: You'll need to change the teamsUrl variable to contain your webhook from Teams."
echo "usage: ${0} -b \"Message contents\""
echo " -m Message body"
echo " -h This help info"
exit 1
}
while getopts "m:h" opt; do
case ${opt} in
m) msgBody="$OPTARG"
;;
h) usage
;;
\?) echo "Invalid option -$OPTARG" >&2
;;
esac
done
# Add/Change the webhook to one you created in Teams
teamsUrl="https://teamswebhook"
if [[ ! "${msgBody}" ]]; then
echo "You didn't specify a message!"
usage
fi
read -d '' payLoad << EOF
{
"text": "${msgBody}",
}
EOF
statusCode=$(curl \
--write-out %{http_code} \
--silent \
--output /dev/null \
-X POST \
-H 'Content-type: application/json' \
--data "${payLoad}" ${teamsUrl})
echo ${statusCode}
This bash script runs and checks to see if a service like httpd, or mysql is running and alerts if it is not.
Script Usage
servicemonitor.sh httpd mariadb
Where httpd and mariadb are the services you want to monitor/check.
Setup Script
Create servicemonitor.sh file and paste the following contents in.
#!/bin/bash
timeHour=`date +%H` # date/time just shows the hour
quietHour="02" # If it is this hour, then exit program, useful if services are expected to go down during a particular time for maintenance
if ( echo ${timeHour} | grep ${quietHour}); then
echo "Is during quiet time. Quiting."
exit
fi
function ALERT {
msg="~/teams.sh -b" # Sends a message to Microsoft Teams channel. Needs the teams.sh script in the users home directory.
${msg} "$1"
}
function SERVICECHECK {
serviceName="${1}"
if (systemctl status ${serviceName} | grep Active | grep inactive); then
ALERT "ERROR: $(hostname) - ${serviceName} - ${0} is inactive"
echo "ERROR: ${serviceName} is inactive!"
else
echo "Running!"
fi
}
for i in $@
do
echo Checking ${i}
SERVICECHECK ${i}
done
Note the teams.sh script that is called is another script that is called that sends an alert to Microsoft Teams. Is not needed for this script to run, but allows for remote alerting.
Save file and make it executable
chmod +x servicemonitor.sh
Add script to crontab (Optional)
crontab -e
The following runs the script every 5 minutes. Can change the 5 to 1 to run every minute. Change httpd and mariadb to the service you want to monitor.
*/5 * * * * /home/UserName/servicemonitor.sh httpd mariadb
This script adds a new SFTP user with only sftp access. Refer to this post on setting up a SFTP server.
Download script
wget www.incredigeek.com/home/downloads/scripts/sftpUserAdd.sh
Make executable
chmod +x sftpUserAdd.sh
Run with the new user you want to create.
./sftpUserAdd.sh sftpUsername
You may need to edit the script and modify the location parameters.
#!/bin/bash
# Automatically setup and add SFTP user
# Script creates new user and setups permissions
newUser=$1
sftpDir="/sftp/"
if grep -q ${newUser} /etc/passwd ;then
echo ${newUser} Already exsists. Aborting!
exit 1
else
mkdir -p ${sftpDir}/${newUser}/files
useradd -g sftpusers -d ${sftpDir}/${newUser}/files -s /sbin/nologin ${newUser}
passwd ${newUser}
chown ${newUser}:sftpusers /sftp/CareMark/files
fi
#!/bin/bash
# Zenoss 5 backup script
#
#
# CHANGE THESE VARIABLES
# Zenoss 5 Backup log file
log="/root/zenbackup.log"
# Backup directory
bdir="/backup/zenbackup/"
echo "Starting Zenoss backup Script"
echo "Starting backup to ${bdir}." $(date) >> ${log}
echo "Starting Backup to ${bdir}." $(date)
# Stop Zenoss Service
serviced service stop Zenoss.core
wait
# Wait for Zenoss to stop and then continue the backup
while [ -ne `serviced service status Zenoss.core | grep Stopped` ]
do
echo "Waiting for Zenoss to Stop"
sleep 5
done
# Backup
echo "Starting Zenoss Backup"
serviced backup ${bdir}
echo "Backup Finished"
wait
# Start Zenoss
echo "Starting Zenoss"
serviced service start Zenoss.core
echo "Finished backup." $(date) >> ${log}
echo "Finished backup." $(date)
exit