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15 Python Tips : How to Write Code Effectively

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 Here are some Python tips to keep in mind that will help you write clean, efficient, and bug-free code.     Python Tips for Effective Coding 1. Code Readability and PEP 8  Always aim for clean and readable code by following PEP 8 guidelines.  Use meaningful variable names, avoid excessively long lines (stick to 79 characters), and organize imports properly. 2. Use List Comprehensions List comprehensions are concise and often faster than regular for-loops. Example: squares = [x**2 for x in range(10)] instead of creating an empty list and appending each square value. 3. Take Advantage of Python’s Built-in Libraries  Libraries like itertools, collections, math, and datetime provide powerful functions and data structures that can simplify your code.   For example, collections.Counter can quickly count elements in a list, and itertools.chain can flatten nested lists. 4. Use enumerate Instead of Range     When you need both the index ...
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Tail Command in Linux: A Comprehensive Overview

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The tail in Linux is handy command. You can check the last lines of a file in Linux/Unix operating systems.

You can use it to display last lines from single file, display last lines from multiple files, display the last entries of log files.


Tail Command in Linux


During production support the usage of Tail command is helpful since you can check latest logs quickly. Here are the top Tail command examples.

#1 Display last lines in a file (Tail file Linux)


Here's the tail command that shows last three lines of a file.

cat sample.txt | tail -3

It displays last 3 lines of a file. The same command you can use as

tail -3 sample.txt

#2 Display last lines of multiple files


There are three files. sample2.txt, sample3.txt, sample4.txt. The command displays the last 3 lines from all the three files.

tail -3 sample[2-4].txt


Tail command


#3 Tail -f option (Tail f Linux)


The –f option is to check status of long-running process that is redirecting output to a file. For example, if you invoke the below command, the status it writes to the output.

find . -print |xargs grep -i abc </tmp/abc &

Using the -f option you can see contents of the file /tmp/abc whenever it is updated: 

tail -f /tmp/abc


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