How to Reset Forgotten Root Password on Linux RHEL 7/CentOS 7

This article will explain the steps to reset a lost root password or to reset forgotten root password on Linux RHEL 7 or CentOS 7. Basically, the steps will adding a “rd.break” to the end of the line with kernel parameters in Grub to stops the start up process before the regular root filesystem is […]

Rescan SCSI Bus to Add or Remove a SCSI Devices on Linux

When you need to add a hard disk or network interface cards on the new VMware virtual machine on the production server, but you are not allowed to shutdown the server or you have several related issues as below. The following quick article shows how to rescan SCSI Bus to add or remove a SCSI […]

How to Setup VsFTPD Service with SSL/TLS on Linux CentOS 7 / RHEL 7 / Oracle Linux 7

If you have your own dedicated server or virtual private server (VPS) that run in linux operating system to host your website or blog, it is recommended to install and setup ftp Service in order to facilitate the transfer of files and update your website. Among the well-known FTP software is VsFTPD. VsFTPD means “Very Secure FTP Daemon” […]

3 Command to Change the Linux Date and Time in CentOS 7/RHEL 7

Red Hat Enterprise Linux 7 or CentOS 7 come with three default utilities or command line that help to configure and display the information about the system date and time: 3 Command to Change the Linux Date and Time in CentOS 7/RHEL 7 1.The timedatectl utility, which is new in Red Hat Enterprise Linux 7 […]

How to Change Date and Time Linux on RHEL 6/7 and CentOS 6/7

This post assumed that your Red Hat Enterprise Linux 6 (RHEL 6) does not have Date/Time Properties installed. In order to change the date and In order to change date and time you will have to perform the changes from the command line. Note that in order to perform actions described in this post, you […]

How to Change Timezone Linux on RHEL 6/7 and CentOS 6/7

This post assumed that we will change the System Timezone from the command line without using redhat-config-date. There are several files and directories that are used for time zones. In RHEL 6 and RHEL 6, there is one directory that very useful to select the appropriate time zone which is /usr/share/zoneinfo directory. Sometimes we forget […]

How to Install Unzip to Extract Zip File on Linux RHEL, CentOS, Oracle Linux 6/7

Question : When i try to extract .zip file, i get the following error : # zip -bash: zip: command not found # unzip -bash: unzip: command not found As example, i try to extract “Joomla_2.5.4-Stable-Full_Package.zip” file, but it return me this error : # unzip Joomla_2.5.4-Stable-Full_Package.zip -bash: unzip: command not found Solution : Unzip […]

How to Check Server Uptime in Linux

Information about how long the system has been running or server uptime is not critical for some people. But it is important for server administrators. Servers that run mission-critical applications must run as long as possible. Sometimes it must be zero downtime. Information about the uptime is very useful in many cases it helps to […]

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