Essential Docker Commands Reference
System Information
Check Docker Version
docker version
Displays version information for both Docker client and server components.
View Docker System Details
docker info
Shows comprehensive system information including container counts, images, and configuration.
Access Command Help
docker --help
Displays usage information and lists all avail ...
Posted on Sat, 09 May 2026 05:29:59 +0000 by hobeau
Essential Debian System and Development Commands
Package Management with dpkg
Install a local .deb package:
sudo dpkg -i package.deb
Remove a package while keeping configuration files:
sudo dpkg -r package_name
Purge both the package and its configuration files:
sudo dpkg --purge package_name
List all installed packages:
dpkg -l
Display information about a .deb file:
dpkg -I package.deb
...
Posted on Fri, 08 May 2026 20:08:11 +0000 by naskar
User Account Management in CentOS 7
Key Configuration Files
User and group information in Linux is stored in specific text files within the /etc directory. Understanding these files is crucial for system administration.
/etc/passwd: Contains user account information. Each line represents a user with fields separated by colons: username:password:UID:GID:comment:home_directory:log ...
Posted on Thu, 07 May 2026 20:00:22 +0000 by davestevens_uk