LINUX TIPS
Use the following linux command as root user to check if a port is blocked on your machine or not. Copy the command. Replace <PORT> with actual port number e.g. 22 and run it on bash terminal. for tcp ports : #start port=<PORT>; (iptables -nL INPUT | head -1 | grep “DROP” > /dev/null || …
Check if a port is blocked or allowed using iptables – the better way Read More »
1. edit file /etc/sysconfig/network 2. channge line HOSTNAME=localhost.localdomain to whatever you want. 3. Reboot system. 4. Thank me.
Following are the simple steps to configure https on linux machine 1. yum install mod_ssl 2. yum install crypto-utils 3. genkey e.g. genkey www.example.com 4. Click Next. and choose 1024 as key size 5. select No if asked “Would you like to send a Certificate to (CSR) to a Certificate Authority (CA)? 6. Do not …
Sometimes after partial OS installation, when you need to install more packages, you do by yum command using online OS repository which is great. But under some installations when there is no internet available installing Packages from CD becomes hell. The most of the time is spent installing / searching dependencies. Well all these problems …
Create local repository for easy package installation in lack of internet Read More »
create a file named ps.sh in /etc/profile.d directory. Add the following line in the file PS1=”\[$(tput setaf 1)\]\u@\[$(tput setaf 2)\]\h\[$(tput setaf 1)\]: \W \\$ \[$(tput sgr0)\]” Explained : $(tput setaf 1) set the color to red \u is current user \h is the host name \W is the working directory $(tput sgr0) reset …