Python script operation under Linux platform realizes system resource management

Python script operation under the Linux platform realizes system resource management

Under the Linux platform, we can use Python scripts to manage and monitor system resources. Python is a concise and efficient programming language, and its powerful library support makes writing system management scripts very easy.

System resource management refers to the monitoring and management of CPU, memory, hard disk and other resources to optimize the performance and stability of the system. We can use Python scripts to implement these functions based on the system interfaces and commands provided by Linux. The following will introduce how to use Python to implement system resource management through some specific code examples.

1. Get CPU usage

import psutil

Get CPU usage

cpu_percent = psutil.cpu_percent(interval=1)
print("CPU usage:", cpu_percent)

In the above code, we first imported the psutil library, which provides an interface for obtaining system resource information. psutil.cpu_percent(interval=1)You can get the current CPU usage, where the interval parameter specifies the sampling interval (in seconds). Through this interface, we can obtain the CPU usage and perform further processing.

2. Get memory usage

Get memory usage

memory = psutil.virtual_memory()
print("Memory usage:" , memory.used, "bytes")

In the above code, psutil.virtual_memory() can obtain the memory usage of the current system. The number of bytes currently used by memory can be obtained through memory.used.

3. Get hard disk space

Get hard disk space

disk = psutil.disk_usage('/')
print("Total hard disk space :", disk.total, "bytes")
print("Hard disk space used:", disk.used, "bytes")
print("Hard disk space available:", disk.free, "bytes ")

In the above code, psutil.disk_usage('/') can obtain the hard disk usage of the root directory. The total amount, used amount and available amount of hard disk space can be obtained through disk.total, disk.used and disk.free respectively.

4. Get process information

Get process information

processes = []

for process in psutil.process_iter(['pid ', 'name', 'username']):

processes.append((process.info['pid'], process.info['name'], process.info['username']))

for pid, name, username in processes:

print("进程ID：", pid)
print("进程名：", name)
print("进程用户：", username)

In the above code, psutil.process_iter(['pid' , 'name', 'username'])You can get detailed information about all currently running processes. Traversing these process information, we can obtain the ID, name and user of the process.

Through the above code examples, we can see that using Python scripts to use operating system resources on the Linux platform is very simple and efficient. In actual applications, we can further expand and optimize these codes as needed to achieve more complex and precise system resource management functions. At the same time, you can use other Python libraries such as matplotlib, numpy, etc. to display and analyze the obtained resource information in charts to better understand and utilize system resources.

To sum up, using Python scripts to implement system resource management under the Linux platform can help us manage and monitor system resources more efficiently and improve system performance and stability.

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