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# Check the kernel version uname -r # Example output: 6.5.0-45-generic # Display full system information uname -a # Linux hostname 6.5.0-45-generic #45~22.04.1-Ubuntu SMP ... # Show the Linux distribution name and version cat /etc/os-release # NAME="Ubuntu" # VERSION="22.04.3 LTS (Jammy Jellyfish)" # List installed package counts (Debian/Ubuntu) dpkg -l | wc -l # Check how long the system has been running uptime # 14:23:01 up 5 days, 3:12, 2 users, load average: 0.08, 0.10, 0.09 # Display memory usage free -h # total used free shared buff/cache available # Mem: 15Gi 3.2Gi 8.1Gi 312Mi 4.0Gi 11Gi # Show disk usage of all mounted filesystems df -h # Display CPU information lscpu | grep -E 'Model name|CPU\(s\)|Thread'
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