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

The simplest grep command looks like the one shown below. This “find string in file” command will show all the lines in the file that contain the string, even when that string is only part of a longer ...

You may find yourself in a situation where you remember the content of a file but not its name. Linux offers various commands to help you find files based on specific text strings within them. By ...

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Created in the early days of Unix, it has become a cornerstone of text processing in Linux ...

grep is the established tool for full-text file search on the command line. But alternatives are available, like ripgrep, ag, and sift. But should you switch and, if so, which should be your search ...

The command line isn't required when using Linux. To truly maximize your Linux experience, you should still learn it. Some commands are more useful than others. Before we begin, I want to be clear: ...

Quick: If you shout "regular expressions" in a crowd of Linux users, what happens? Answer: Everyone will tell you the right way to use them, and every answer will be different. Regular expressions -- ...

Viewing the content of files and examining access permissions and such are very different options. This post examines a number of ways to look at files on Linux. There are a number of ways to view ...