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For the term "update-rc.d".

Some Bash Scripts to Manage Remote Server

Script to Update and Upgrade #! /bin/bash chmod 700 /usr/bin/apt-get chmod 700 /usr/bin/aptitude chmod 700 /usr/bin/dpkg swapoff -a chown username:username /home/username/* chmod 700 /home/username/* apt-get update && apt-get upgrade –show-upgraded -y Script to End session and Harden some critical files #! /bin/bash swapon -a chmod 000 /usr/bin/apt-get chmod 000 /usr/bin/aptitude chmod 000 /usr/bin/dpkg find /home/username/ -size 0 -exec rm '{}'...

Php 7.3 How to Upgrade Debian Linux 9

This is not as simple as even the most popular blogs explain. sudo apt update sudo apt -y install software-properties-common dirmngr apt-transport-https lsb-release ca-certificates sudo wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg echo “deb https://packages.sury.org/php/ $(lsb_release -sc) main” | sudo tee /etc/apt/sources.list.d/php7.3.list sudo apt update sudo apt -y install php7.3 php7.3-cli php7.3-fpm php7.3-json php7.3-pdo php7.3-mysql php7.3-zip php7.3-gd php7.3-mbstring php7.3-curl php7.3-xml php7.3-bcmath php7.3-json sudo...

Linux Services | View All | Stopping and Starting

How To see all services available, type in terminal; sudo service –status-all How To see all services running and ports, type in terminal; sudo netstat -plunt How To remove a service from startup at boot sudo update-rc.d -f [service] remove How To enable a service to run on boot sudo update-rc.d [service] defaults

Ubuntu Dynamic MOTD Message of the Day

How to create Dynamic Message of the Day in Ubuntu cd /etc/update-motd.d/ any script you want ubuntu to run and display at login is here. create your own or modify those in this directory.

Customize Debian Linux grub2

I wanted to remove the splash image while booting Debian 7 Wheezy and watch the code execute, while also use the full screen resolution.

Harden Debian 7 Server with PSAD

Install Port Scan Attack Detector on Debian 7 Server sudo apt-get install psad sudo vi /etc/psad/psad.conf change these lines EMAIL_ADDRESSES me@seleads.com; HOSTNAME my.seleads.com; HOME_NET NOT_USED; ALERTING_METHODS noemail; IPT_SYSLOG_FILE /var/log/syslog; EMAIL_LIMIT_STATUS_MSG N; ENABLE_AUTO_IDS Y; AUTO_IDS_DANGER_LEVEL 2; AUTO_BLOCK_TIMEOUT 2592000; ENABLE_AUTO_IDS_EMAILS N; Restart psad psad -R psad –sig-update psad -H sudo vi /etc/cron.hourly/save-bad-ips #!/bin/sh PATH=/usr/share:/usr/sbin:/usr/bin:/sbin:/bin /sbin/iptables-save -c > /tmp/iptables-save.txt #echo “SELECT lockdown_IP FROM...

Change Default Editor at System Level

In a terminal type sudo apt-get install vim sudo update-alternatives –config editor Follow the instructions to choose vim.basic – your display will vary Debian Ubuntu Change Default Editor Nano VI Gedit at System Level sudo vi /etc/vim/vimrc uncomment line 20 – syntax on logout & login

How To Uninstall Google Talk

sudo apt-get purge google-talkplugin /usr/share/doc/google-talkplugin —————————————- sudo add-apt-repository ppa:ubuntu-audio-dev/ppa sudo apt-get update sudo apt-get install linux-alsa-driver-modules-$(uname -r) alsa-driver alsa-utils

ddclient for DynDNS Setup on Debian 7

# Configuration file for ddclient # # /etc/ddclient.conf ## ddclient configuration file daemon=600 # check every 600 seconds syslog=yes ## Default options protocol=dyndns2 ## Detect IP with our CheckIP server use=web, web=checkip.dyndns.com, web-skip=’IP Address’ server=members.dyndns.org # log update msgs to syslog mail-failure=user@gmail.com # Mail failed updates to user pid=/var/run/ddclient.pid # record PID in file. ## DynDNS username and password here...