Linux Howto’s for System Administrations
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Amazon Simple Email Service (SES) is a hosted cloud-based email service to send and receive email using your email addresses and domains. Typically SES is used for sending bulk email …
I talked about yum-cron that provides auto yum updates nightly via cron. However, this package is no longer available on CentOS/RHEL 8 or Fedora Linux 29 or above. So how …
I use the reboot command to reboot our PostgreSQL server running on RHEL 7. We have a development server running on CentOS 7 too. However, sometimes I noticed database corruption …
I am using a CentOS/RHEL 6/7/8 server. How do I check from the command line if a reboot is required for my CentOS host? How do I check if a …
How do I use the systemctl command to view status of a systemd service on Linux operating systems?We use systemctl status command under systemd to view the status of the …
One of my PHP and bash scripts depends upon less command to display the help system to other users. But, whenever they run less on a particular version of CentOS …
How do I set up WireGuard Firewall rules (iptables) in Linux?For road warrior WireGuard and other purposes, you need to set up and configure firewall rules. You need to configure …
Now that I set up an LXD container, how do I backup and restore LXD containers running on Ubuntu/Debian or Fedora/CentOS Linux server?Backing up your LXD server is an essential …
How can I find the correct ulimit values for a user account or process on Linux systems?For proper operation, we must ensure that the correct ulimit values set after installing …
How do I extract tar.xz files in Linux? Can you tell me command to unzip linux-5.6.13.tar.xz file? How can I uncompressing (or decompressing) all files in the current directory?The tar …