How to Install tcpdump and use of tcpdump command on CentOS 8

Tcpdump is a command line utility which is widely used to capture packet sniffer or filter TCP/IP packets that received or transferred over the network. it is allowing to analyse headers of TCP/IP which helps in network troubleshooting.

How to Configure Local Synced YUM repository on CentOS 7 using HTTP

YUM (YellowDog Updater Modified) is a package management tool for RPM based Linux system that helps to install, uninstall, and update packages. Local yum repository is used to save bandwidth, fasten package installations, network installations and systems updates for n numbers of systems in a local area network.

How to Resolve showmount fails with error “clnt_create: RPC: Program not registered “on CentOS 7

NFS share is a network file sharing protocol. It is used to provide shared access to files and folders across Linux machines over the network. This error comes when sometime the NFS service is stopped on the NFS server and will gives the below error while running showmount –e <NFS Server IP>.

How to Resolve kernel panic at boot with error initrd image file not found on CentOS 7

Sometime after yum update transaction break or kernel update or fresh install, the system fails to find initrd (initial ram disk) and also due to that unable to mount the root file system and also fail to boot the system with below message on CentOS 7 systems:

How to Resolve “kernel panic at boot with error Unable to mount root fs on unknown-block” on CentOS 7

Sometime after yum update transaction break or kernel update or fresh install, the system fails to mount the root file system and also fail to boot the system with below message on CentOS 7 systems:

How to Configure Local YUM repository on CentOS 7 using ISO Image

YUM (YellowDog Updater Modified) is a package management tool for RPM based Linux system that helps to install, uninstall, and update packages local and other client machines over the network. YUM resolve all dependency and install the package with all dependencies.

How to Install SEmanage on CentOS 8

SEmanage is a command-line utility and provide ability to manage SELinux contexts. Its needs separate installation by default this package is not available in CentOS 8 minimal installations.

How to resolve -bash: showmount: command not found on CentOS 8

showmount command: It is a command-line utility and provide ability to manage NFS share. Its needs separate installation by default this package is not available in CentOS 8 minimal.