Topic: Data Processing

How to find all unique words in a file?

Linux has multiple tools to process text files, including to search through files and filter out all unique words. Here is how to combine a few commands.

How to remove trailing whitespace from a file

Linux has a wide range of tools to do data processing and text manipulation. Learn how to remove trailing whitespace from a file using the sed command.

How to insert a line at the beginning of a file

Learn how to insert a line of text at the beginning of a file using the sed command. Great to automate repeating tasks and do data processing.