First, find out the size of the disk by typing the following command: fdisk -l /dev/sdb Then, to create a partition start GNU parted as follows: parted /dev/sdb Creates a new GPT disklabel i.e. partition table: (parted) mklabel gpt Next, set the default unit to TB, enter: (parted) unit TB To create a 3TB partition […]
Creating a custom command is sometimes very convenient and very easy. 1. Create a bash script and save #!/bin/bash # The code goes here 2. Make the script executable chmod +x [script] 3. Then you can either move it into the /usr/bin directory or create a soft link in /usr/bin to the script file ln […]
In addition to using system-config-firewall (which is not installed on RHEL by default) one can edit the configuration file directly. This also helps if you need to add more specific rules. File: /etc/sysconfig/iptables Open a port up to everybody: -A INPUT -m state –state NEW -m tcp -p tcp –dport [Port Number] -j ACCEPT Open […]
I typically move my root directory for Apache and this can get complicated when seLinux is enforced but with a bit of knowledge this can be done without disabling seLinux. display current state of seLinux: getenforce displays current permissions and seLinux settings for a directory (ex. ls -ldZ /var/www/html) ls -ldZ [directory path] Executing: ls -ldZ […]
Here is a straight forward method for partitioning, format, and mount a new volume on a Centos or RHEL system. These steps would be performed after physically (or virtually) connecting the new volume. sudo fdisk -l This command will display a list of volumes and their partitions on the system. You can use this to […]