Learn about the ability to play around with regular expressions by using sed techniques.
- [Instructor] Hello again and welcome to the next video…of section four, using sed to perform text replacement.…In the previous video we have learned about cutting…a file column-wise with cut.…This video will cover most of the frequently…used sed techniques.…Sed stands for stream editor, it's a very essential tool…for text processing and a marvelous utility…to play around with regular expressions.…A well known usage of the sed command…is for text replacement.…Let's see how to do it.…Sed can be used to replace occurrences…of a string with another string in a given text.…
It can be matched using regular expressions.…This command reads from standard in.…If you're using the vi editor you'll notice…that the command to replace text is very similar…to the one discussed here.…By default sed only prints the substitute text,…to save your changes along with your substitutions…to the same file use the minus I option.…Most of the users follow multiple redirections…to save the file after making a replacement as follows.…
However, it can be done in just one line.…
Released
7/17/2017Note: This course was created by Packt Publishing. We are pleased to host this training in our library.
- Printing in the terminal
- Performing math in the Linux shell
- Getting and setting dates
- Working with functions and arguments
- Reading output
- Making comparisons
- Concatenating text
- Finding, editing, generating, and deleting files
- Running parallel processes
- Using regular expressions
- Downloading webpages
- Parsing data from a website
- Finding broken links
- Backing up and archiving
- Transferring files and data through the network
- Monitoring your Linux system
- Gathering data for system administration
Skill Level Intermediate
Duration
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Generating files of any size4m 24s
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Making files immutable2m 13s
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Using loopback files6m 15s
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Printing the directory tree3m 18s
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4. Texting and Driving
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Using regular expressions9m 25s
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Video: Using sed to perform text replacement