Mastering Linux Advanced System Management: Essential Commands and Techniques | Linux Commands
Mastering Linux Advanced System Management: Essential Commands and Techniques | Linux Commands
If you are a Linux system administrator, you need to master some advanced commands that can help you monitor and troubleshoot your system performance and network issues. In this video, I will introduce few of them: PS, TOP, Uptime, Sysstat, TCPDUMP, and Netstat.
PS: This command shows information about the processes running on your system. You can use various options to filter and sort the output according to your needs. For example, ps -aux shows all the processes with detailed information such as user, CPU usage, memory usage, start time, etc.
TOP: This command displays the real-time activity of your system. You can see the CPU load, memory usage, swap usage, process count, and other statistics. You can also interact with the command by pressing different keys to change the display mode, kill processes, or adjust priorities.
Uptime: This command shows how long your system has been running since the last boot. It also shows the number of users logged in and the average load of the system in the last 1, 5, and 15 minutes.
Sysstat: This is a collection of tools that can measure and report various system performance metrics such as CPU utilization, disk I/O, network traffic, memory usage, etc. You can use these tools to collect and analyze historical data or to monitor your system in real-time.
TCPDUMP: This command captures and analyzes the network packets that are sent or received by your system. You can use various filters and options to specify what kind of packets you want to see and how you want to see them. For example, tcpdump -i eth0 port 80 shows only the packets related to HTTP traffic on the interface eth0.
Netstat: This command shows the network connections, routing tables, interface statistics, and other network-related information on your system. You can use various options to display different types of information. For example, netstat -anp shows all the connections with their addresses, ports, and process IDs.
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