Day 4/90 Days-of-DevOps challenge

Hello everyone!

Are you struggling to search for specific text, files or directories in your Linux system? Look no further than the "grep", "find", and "awk" commands.

First up is "grep", which stands for Global Regular Expression Print. "grep" is a powerful command that allows you to search for specific text patterns in one or more files. This command can be used with different options to refine your search and can also be used in conjunction with other commands, such as "find" and "awk". For example, you can use the following command to search for a specific string in all files in the current directory and its subdirectories:

grep -r "search_string" .

Next, we have the "find" command, which allows you to search for files and directories based on different criteria, such as name, size, type, and modification time. The "find" command is particularly useful for finding and manipulating large sets of files and directories. For example, you can use the following command to find all files with the extension ".txt" in the current directory and its subdirectories:

find . -type f -name "*.txt"

Finally, we have the "awk" command, which is a powerful text-processing tool. "awk" allows you to manipulate and process text files based on specific patterns and rules. With "awk", you can search for specific patterns, extract data, perform calculations, and generate reports. For example, you can use the following command to search for a specific pattern in a file and print the second field:

awk '/pattern/ {print $2}' file.txt

In summary, the "grep", "find", and "awk" commands are powerful tools that can help you to search for specific text, files, and directories, as well as process and manipulate text files. By using these commands in combination with other Linux commands, you can create complex and customized scripts that automate your DevOps workflows.