Practical tips for Python scripting in Linux

Practical tips for Python scripting in Linux, specific code examples are required

Introduction:
Python is a programming language that can be widely used in various fields , and Linux, as a free and open source operating system, is widely used in servers, embedded devices and other fields. In the Linux environment, Python scripts can exert powerful power to help us complete various tasks. This article will introduce some practical tips for using Python scripts in Linux and provide specific code examples.

1. Combining Shell Commands with Python
In Linux, we often need to use Shell commands to perform some system-level operations. Python provides the os module and the subprocess module, which can easily call Shell commands. Here are some common examples:

1. Execute a Shell command and get the output:

import subprocess

result = subprocess.check_output("ls -l", shell=True)
print(result.decode())

2. Execute multiple Shell commands:

import subprocess

commands = [
    "sudo apt update",
    "sudo apt upgrade -y",
    "sudo apt install python3-pip -y",
]
for cmd in commands:
    subprocess.call(cmd, shell=True)

3. Restart via Shell command Directed output:

import subprocess

with open("output.txt", "w") as f:
    subprocess.call("ls -l", shell=True, stdout=f)

2. File and directory operations
File and directory operations in Linux systems are frequently encountered tasks. Python provides the os.path module and ## The #shutil module is used to process files and directories.

1. Create a directory:

import os

os.makedirs("my_directory")

2. Delete the directory and its contents:

import shutil

shutil.rmtree("my_directory")

3. Traverse the files in the directory:

import os

for root, dirs, files in os.walk("my_directory"):
    for file in files:
        print(os.path.join(root, file))

3. Network operations

Network operations in the Linux environment are very common. Python provides the
socket module and the requests module to handle network requests.

1. Initiate HTTP request:

import requests

response = requests.get("https://www.example.com")
print(response.text)

2. Create a simple web server:

import http.server

handler = http.server.SimpleHTTPRequestHandler
httpd = http.server.HTTPServer(("", 8000), handler)
httpd.serve_forever()

3. Create a simple SMTP client:

import smtplib
from email.message import EmailMessage

msg = EmailMessage()
msg.set_content("Hello, World!")

msg["Subject"] = "This is a test email"
msg["From"] = "sender@example.com"
msg["To"] = "recipient@example.com"

with smtplib.SMTP("smtp.example.com") as server:
    server.send_message(msg)

Conclusion:

This article introduces some practical skills for using Python scripts in Linux, including combination with Shell commands, file and directory operations, and network operations. Through these tips, we can better utilize the power of Python to complete various tasks. The above sample code is only a demonstration and readers can modify and expand it according to their actual needs.

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