ss – the alternative to netstat | An alternative to netstat is the utility ss. ss dumps socket statistics in a clear and more simple view as compared to netstat. Let’s check it out! With no options specified, ss displays a list of TCP sockets with established connections. This is useful on a server to see what clients are connected. The option
How to login via SSH to Amazon EC2 instance | After launching a Linux Amazon EC2 instance, you can ssh in by using the private key (key pair download) provided in the AWS console. I’ll show you how! 1. In the AWS console, a key pair can be generated. Download the key pair (private key, .pem file) from the console. 2. Next, move this .pem
Install EPEL Repository for CentOS 6 | The Fedora EPEL Repository provides many additional packages that are for use with either Red Hat or CentOS. I’ll show you how to add this repository for CentOS 6! Run the following command (you do use sudo, right?!): 32bit: $ sudo rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm 64bit: $ sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm Now enjoy 7674 additional packages
Install Drupal 7 in Ubuntu 12.04 | Drupal 7 is provided in Ubuntu 12.04. I’ll show you how to get it up and running! 1. Install the package drupal7: $ sudo apt-get install drupal7 2. Create the following apache site configuration file: $ sudo nano /etc/apache2/sites-available/drupal7 Alias /drupal7 “/usr/share/drupal7″ < Directory /usr/share/drupal7 > Options -Indexes FollowSymLinks MultiViews < /Directory > 3. Enable
Change sudo default password cache | sudo’s default password cache time is 5 minutes. To change the default time, it is possible to edit a setting in /etc/sudoers as desired. I’ll show you how! Edit /etc/sudoers with your desired text editor, or as standard with sudo visudo: $ sudo visudo For example, to increase the timeout to 30 minutes for user
Combine apt-get update and apt-get upgrade in one command | On Ubuntu or Debian, it is possible to make a small bash one-liner to fully update the host with one simple command. I’ll show you how! 1. Create a file called ‘update’ in /usr/local/bin: $ sudo nano /usr/local/bin/update 2. Type the following for the file contents, then save with Control+X. #!/bin/bash sudo apt-get update &&
A Closer Look at WordPress Password Hashes | Check out this write up on WordPress password hashes: A Closer Look at WordPress Password Hashes If you find this topic interesting, you may also be interested in Expert Pen Testing or CISSP training. Check it out!
Suse | sudo asks for root password | By default, the sudo command on Suse Linux asks for the root password instead of the user’s password. I’ll show you how to fix that to be more expected (and secure!) behavior of sudo and only ask for the user’s password. 1. Crack open a terminal, and issue: $ sudo visudo 2. Comment out the
Start eth0 at boot Red Hat | CentOS | To have eth0 start at boot, edit the following file: $ sudo nano /etc/sysconfig/network-scripts/ifcfg-eth0 Change ONBOOT to “yes” DEVICE=”eth0″ BOOTPROTO=”dhcp” HWADDR=”08:00:27:CE:54:D9″ NM_CONTROLLED=”yes” ONBOOT=”yes” Done!
linuxlifecycle.com | Support Life Cycles for Enterprise Linux Distributions | Presenting linuxlifecycle.com! A simple clear site which displays the current support cycle or life cycle of major Linux distributions. http://linuxlifecycle.com Corrections and feedback welcome,