cloud engineer
How to lock a package or software in RedHat.
# For RHEL 5 yum install yum-versionlock # For RHEL 6 and 7 yum install yum-plugin-versionlock # For RHEL 8 and 9 yum install python3-dnf-plugin-versionlock |
# For RHEL 5 yum install yum-versionlock # For RHEL 6 and 7 yum install yum-plugin-versionlock # For RHEL 8 and 9 yum install python3-dnf-plugin-versionlock
Locking a package
yum versionlock gcc-* |
yum versionlock gcc-*
List locked packages
yum versionlock list |
yum versionlock list
Cockpit is a web-based graphical interface for Linux users and admins.
Install
dnf install cockpit |
dnf install cockpit
Start and Enable
systemctl start cockpit
systemctl enable cockpit.socket |
systemctl start cockpit systemctl enable cockpit.socket
Status
systemctl status cockpit |
systemctl status cockpit
Web access
http://192.168.0.20:9090 |
http://192.168.0.20:9090
Install
brew install p7zip |
brew install p7zip
Extract
7z x file.7z |
7z x file.7z
Compress
7z a file.7z mydirectory |
7z a file.7z mydirectory
How to install the latest version of the Sublime Text editor on Ubuntu or Mint.
wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add - sudo apt-get install apt-transport-https echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list sudo apt-get update sudo apt-get install sublime-text |
wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add - sudo apt-get install apt-transport-https echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list sudo apt-get update sudo apt-get install sublime-text
It will add the sublime-text.list file in /etc/apt/sources.list.d directory.
Steps how to install Docker and Docker Compose on Amazon Linux 2.
Install Docker
$ sudo amazon-linux-extras install docker $ sudo service docker start $ sudo usermod -a -G docker ec2-user |
$ sudo amazon-linux-extras install docker $ sudo service docker start $ sudo usermod -a -G docker ec2-user
Start at boot.
$ sudo chkconfig docker on |
$ sudo chkconfig docker on
Install git (optional).
$ sudo yum install -y git |
$ sudo yum install -y git
Install Docker Compose
$ sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) \ -o /usr/bin/docker-compose $ sudo chmod +x /usr/local/bin/docker-compose |
$ sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) \ -o /usr/bin/docker-compose $ sudo chmod +x /usr/local/bin/docker-compose
Check
docker --version docker-compose --version |
docker --version docker-compose --version