Red Hat RHCSA 9 Cert Guide: EX200

Chapter 4

Working with Text Files

The following topics are covered in this chapter:

• Using Common Text File–Related Tools

• A Primer to Using Regular Expressions

• Using grep to Analyze Text

• Working with Other Useful Text Processing Utilities

The following RHCSA exam objectives are covered in this chapter:

• Use grep and regular expressions to analyze text

• Create and edit text files

Since the early days of UNIX, working with text files has been an important administrator skill. Even on modern Linux versions such as Red Hat Enterprise Linux 9, working with text files is still an important skill, as everything you do on Linux is stored as a text file. By applying the correct tools, you’ll easily find and modify the configuration of everything. This ...