To change the hostname of a Linux system, you can follow these steps: Log in to the system with root or sudo access. Open the /etc/hostname file with a text editor such as nano or vi. sudo nano /etc/hostname In the file, replace the current hostname with the new hostname that you want to set. … Read more

The “System bootup in progress. Please wait.” message can appear when you try to log in to a Linux system via SSH. This message indicates that the system is still in the process of booting up and is not yet ready to accept logins. This error can occur if you try to access the system … Read more

You can use the fping command to ping a block of hosts or a netblock. The fping command is similar to the ping command but it allows you to specify a range of IP addresses or a network range to ping multiple hosts at once. To ping a block of hosts, you can use the … Read more

Yum is a package manager that is used in RHEL (Red Hat Enterprise Linux) systems to install, update, and remove software packages. Here are some common uses of the yum command in RHEL 5/6/7/8/9: Update all packages: yum update This command will download and install all updates for all packages on the system. Install a … Read more

To update CentOS Linux, follow these steps: Open a terminal window on your CentOS system. Update the package lists by running the command: sudo yum update This command will download and install the latest package information for your system. Once the package lists are updated, you can update your system by running the command: sudo … Read more

If your Linux system hangs during the configuration of the ATI HD3750 graphics driver, it could be due to a number of reasons. Here are a few things you can try to resolve the issue: Check your system logs: Before you do anything else, check your system logs to see if there are any error … Read more

This warning usually appears when you try to use an option that is not recognized by the command you are running. In this case, the warning is related to the procps package, which provides various system utilities including ps, top, and free. Here are a few possible reasons why you might be seeing this warning … Read more

On Red Hat / CentOS, the systemctl command can be used to check and list running services. Here are some examples: To list all running services, use the command: systemctl list-units –type=service –state=running To check the status of a particular service, use the command: systemctl status servicename Replace servicename with the name of the service … Read more

In Red Hat and CentOS, Ethernet aliases are usually configured using the ifcfg-ethX:Y format, where X is the number of the physical Ethernet interface and Y is the alias number. Here’s how you can swap or change Ethernet aliases: Edit the appropriate interface configuration file The interface configuration files are located in the /etc/sysconfig/network-scripts directory. … Read more

To start, stop, or restart the Apache HTTP server on FreeBSD, you can use the apachectl script. Here are the basic commands: To start Apache: sudo /usr/local/sbin/apachectl start To stop Apache: sudo /usr/local/sbin/apachectl stop To restart Apache: sudo /usr/local/sbin/apachectl restart You can also use the -k option to apachectl to control Apache’s behavior more precisely. … Read more