Collection of common Linux VPS commands

For Daniel, using Linux VPS is already very familiar. Bloggers only know some common commands about Linux, such as those one-click scripts written by Daniel, and they can only read them carefully. I don’t have the ability to write, so today I will give you an explanation of some common Linux VPS commands that I am familiar with.

System

• # uname -a # View kernel/operating system/CPU information
• # head -n 1 /etc/issue # Check the operating system version
• # cat /proc/cpuinfo # View CPU information
• # hostname # View computer name
• # lspci -tv # List all PCI devices
• # lsusb -tv # List all USB devices
• # lsmod # List loaded kernel modules
• # env # View environment variables

Resources

• # free -m # Check memory usage and swap area usage
• # df -h # Check the usage of each partition
• # du -sh # View the size of the specified directory
• # grep MemTotal /proc/meminfo # Check the total memory
• # grep MemFree /proc/meminfo # Check the amount of free memory
• # uptime # View system running time, number of users, load
• # cat /proc/loadavg # View system load

Disks and Partitions

• # mount | column -t # Check the status of the mounted partition
• # fdisk -l # View all partitions
• # swapon -s # View all swap partitions
• # hdparm -i /dev/hda # View disk parameters (only applicable to IDE devices)
• # dmesg | grep IDE # Check the IDE device detection status at startup

Network

• # ifconfig # View the properties of all network interfaces
• # iptables -L # View firewall settings
• # route -n # View routing table
• # netstat -lntp # View all listening ports
• # netstat -antp # View all established connections
• # netstat -s # View network statistics

Process

• # ps -ef # View all processes
• # top # Display process status in real time

Users

• # w # View active users
• # id # View specified user information
• # last # View user login log
• # cut -d: -f1 /etc/passwd # View all users in the system
• # cut -d: -f1 /etc/group # View all groups in the system
• # crontab -l # View the current user’s scheduled tasks

Service

• # chkconfig –list # List all system services
• # chkconfig –list | grep on # List all started system services

Program

• # rpm -qa # View all installed packages

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