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Add contributor ayush2005k #252

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Add Linux Fundamentals Task1 submission for ayush2005k
Jan 1, 2026
a7a09d4
Add grep command documentation
Jan 1, 2026
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1 change: 1 addition & 0 deletions CONTRIBUTORS/ayush2005k/LINUX_FUNDAMENTALS/Task1.txt
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https://drive.google.com/file/d/18lv5CypFaqlLeNKUrPDe3SfF__YuIjkt/view?usp=sharing
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Copilot AI Jan 1, 2026

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The file contains a line number prefix "1 |" before the URL. Based on other Task1.txt files in the repository (e.g., CONTRIBUTORS/ayu-yishu13/LINUX_FUNDAMENTALS/Task1.txt), the file should only contain the URL without any line number prefix. Please remove the "1 |" prefix.

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21 changes: 0 additions & 21 deletions LINUX_FUNDAMENTALS/Commonly_used_commands/grep.txt
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Description
The grep command is basically a "search" tool for your terminal. It scans through files or lists to find lines that match the text you are looking for. Whether you are hunting for a specific error in a long log file or trying to find a piece of code in a big project, grep helps you find it instantly.

Basic Syntax
grep [OPTIONS] "TEXT_TO_FIND" [FILE_NAME]

Useful Flags
1. -i (Ignore Case)
This tells grep not to worry about capital letters. It will find "error", "Error", and "ERROR" all at the same time. Example: grep -i "failed" login.log

2. -v (Invert Search)
This does the opposite of a normal search. It shows you everything EXCEPT the word you typed. It is perfect for hiding boring info messages so you can see the real problems. Example: grep -v "info" server.log

3. -n (Show Line Numbers)
This puts the line number next to every result. It is very helpful when you need to know exactly where to go in a file to fix something. Example: grep -n "config_hidden" settings.conf

4. -r (Search Everything)
This is the "recursive" flag. Instead of looking at just one file, it looks through every single file inside a folder and all its sub-folders. Example: grep -r "password" ./backup_folder

5. -l (List Files Only)
If you don't care about seeing the actual text and just want to know WHICH files contain your word, use this. It only prints the filenames. Example: grep -l "TODO" ./source_code