Regular expressions — the things you feed to programs like grep — are a bit like riding a bike. It seems impossible until you learn to do it, and then it’s easy. Part of their bad reputation is ...

In the example below, we can see how grep selects from a list of bugs all those that start with “bee” and then all those for which the third letter is an “a”. This is pretty basic when it comes to ...

With -w, grep will match “error” but skip things like “errors” or “terror.” The difference can be subtle, but when you’re ...

When working with regular expressions in a shell script the norm is to use grep or sed or some other external command/program. Since version 3 of bash (released in 2004) there is another option: ...

The grep command can search for and list Linux files based on strings you are looking for and add the context of surrounding text. The grep command can help you find Linux files containing the string ...

The grep command is regarded as one of the most essential building blocks of command line automation. It is a search tool that can be used to perform basic text filtering and processing tasks on files ...