A Linux system administrator’s life is filled with text files and data. It’s easier to make sense of this mountain of data using the `grep` utility combined with the power of regular expressions. Input/output redirection is also an important skill for Linux system administrators, who can use it to create log files, quiet error messages, manipulate and sort data, and more. In this hands-on lab, we will explore input/output redirection as well as using `grep` and regular expressions to analyze and manipulate text.
Successfully complete this lab by achieving the following learning objectives:
- Use Input/Output Redirection
- Generate a server information custom log file and append to it.
- Generate a log file of a user’s owned file in a directory structure, excluding errors.
- Number the log file for reference and sort it with various options.
- Generate a listing of the top level directories under
/etcwith space usage and then sort the listing from smaller to larger space usage.
- Use Grep and Regular Expressions to Analyze Text
- Use the
findcommand and options to search file contents with grep.
- Produce a listing of files that contain a particular string.
- Decide if the style of output does not suit your purposes and use
grepto find the the information, including adding options or commands to get the right result.
- Use the