That’s it, simple as that! Target Query Word Count To do this, it is necessary to add the option -i. The output highlights the lines that match the query like this:
In our case, we’re looking for the word command in a file called grep: grep command grep file – the file in which you’re looking for the query.To search for a word in a text file, just type the command: grep query file Let’s look some practical examples of the grep command. -v – with this option, we are shown the lines that do not match the pattern we have looked for.-n – search for lines and find the receive only the matched numbers of the text lines.-r – enables recursive search in the current directory.-c – it will show only the number of lines that match the pattern searched.That is, if you want to search for the word “car” it will be the same as “CAR” -i – the search won’t be case sensitive.However, the most important and commonly used options are the: You can see the documentation and explanations of various options by executing this command in the command line: grep –helpĪs you can see there are many possibilities that the command offers us. – the file you’re performing the search in.The grep command syntax when searching for a single file looks like this: grep pattern ssh you’re running Linux on your computer, just open a terminal. Here’s an article that shows how to do it using PuTTY SSH. In other words, with grep you can search for a word or pattern and the line or lines that have it will be printed.Īt first sight, it can be a command of little utility, however, sysadmins that handle many services with various configuration files, use it to query or search for specific lines within those files.įirst, connect to the VPS using SSH. It looks in a text file for a pattern that we define. The grep command belonging to the Unix family is one of the most versatile and useful tools available. In this post, we will teach you how to use the grep command in Linux (Unix), and reinforce the learning with a useful example for your daily workflow. Above all, if we work with configuration files of services like NTP. In this case, it becomes very important to know and know how to manipulate the Linux terminal.Ī very useful operation that we can perform with the terminal is searching inside a text file. Linux operating system based servers usually have no graphical interface for security reasons.
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