dnf command cheat sheet
# dnf –version (Check version of dnf) # dnf repolist (List enabled repositories) # dnf repolist all (List enabled and disabled repositories) # dnf install httpd (Install a package named httpd) # dnf install httpd (It will install directly install will not ask for yes or no) # dnf remove httpd (It will remove package) […]
System Services and Runlevels
System ServicesSystemd is a system and service manager for Linux Operating System.Systemd is designed to work with SysV init scripts, and have some features like start up of services on boot, on demand etc.You can easily stop, start and check any service status of Linux Operating System.Systemd has replaced init from Redhat 7. The SysV […]
Installation of Linux Operating System (Red Hat 8) in VMWare Workstation
You can follow below steps and can install Linux Operating System in VMWare Workstation. We are installing Red Hat 8.Step1: Go to your desktop icon of VMware Workstation and open it. It will prompt you with below screen for Create, Open and Connect to Virtual Machine. We will go ahead and create a new virtual […]
Sample Kickstart file for CentOS7
Below is sample Kickstart file for CentOS7 installation via network: #CentOS install via network # System language lang en_US # Keyboard layouts keyboard us # System timezone timezone Asia/Kolkata –isUtc # Root password rootpw –iscrypted encrypted-password #platform x86_64 reboot url –url=http://repos.example.com/repos/centos78/ bootloader –append=”rhgb quiet crashkernel=auto” zerombr # Partition clearing information clearpart –all –initlabel #autopart # […]
Bash Script to append “host and ip entries” in remote server “/etc/hosts” file
We can use below script to add host and ip entries in /etc/hosts file. $ cat append.sh #!/bin/bash ## Append hostname and IP in /etc/hosts file hostname=$1 ip=$2 /usr/bin/sshpass -p ‘password’ ssh user@$1 "echo password | sudo -S sh -c ‘echo "$2 $1 $1.example.com" >> /etc/hosts’" $ sh append.sh test-server 192.168.1.100 It will make entry […]
Pulp Commands – Open Source Repository
Pulp is basically a open source repository management from where you can create a repository for your environment. You can copy a remote repository or can hosts your rpms.There are lot of commands which can help you managing your pulp repository. Start, Stop and Restart pulp services: # systemctl start pulp_celerybeat # systemctl start pulp_resource_manager […]
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