Texting and Driving

In this chapter, we will cover the following recipes:

• Using regular expressions
• Searching and mining text inside a file with grep
• Cutting a file column-wise with cut
• Using sed to perform text replacement
• Using awk for advanced text processing
• Finding the frequency of words used in a given file
• Compressing or decompressing JavaScript
• Merging multiple files as columns
• Printing the n^th word or column in a file or line
• Printing text between line numbers or patterns
• Printing lines in the reverse order
• Parsing e-mail address and URLs from text
• Removing a sentence in a file containing a word
• Replacing a pattern with text in all the files in a directory
• Text slicing and parameter operations