Hereaposs the scenario. You have a big string and you want to replace part of it with another string.

For example you want to change quotI am writing a line todayquot to quotI am writing a line nowquot.

In this quick tutorial Iaposll show you how to replace a substring natively in Bash. Iaposll also show the sed command example as an extension.

Bash has some built-in methods for string manipulation. If you want to replace part of a string with another this is how you do it.

Create a string variable consisting of the line x201CI am writing a line todayx201D without the quotes and then replace today with now.

Did you understand what just happened In the syntax quotlinetodaynowquot line is the name of the variable where Iaposve just stored the entire sentence. Here Iaposm instructing it to replace the first occurrence of the word today with now. So instead of displaying the contents of the original variable it showed you the line with the changed word.


Read Full Post

News Link:

Linux Chatter is a news aggregator service that curates some of the best Linux, Cloud, Technical Guides, Hardware and Security news. We display just enough content from the original post to spark your interest. If you like the topic, then click on the 'read full post' button to visit the author's website. Use Linux Chatter to find content from amazing authors!

Note: The content provided has been modified and is not displayed as intended by the author. Any trademarks, copyrights and rights remain with the source.

Disclaimer: Linux Chatter sources content from RSS feeds and personal content submissions. The views and opinions expressed in these articles are those of the authors and do not necessarily reflect those of Linux Chatter.