Command Line Basics: head And tail

Today I'm going to show you how to use the head and tail commands to view portions of text files. There are, of course, other commands that can be used to view text files. The cat command can be useful for viewing small text files while more and less can be good for larger files. But what if you're only interested in just the beginning or the end of a file? That's where head and tail come in.

As you've probably guessed by now, the head command will show the beginning of a file. By default it will show the first 10 lines of a file. Here's an example.

If you'd like to view more or fewer lines you can use the -n switch followed by your desired number of lines. If you'd like to see the first 20 lines of a file you can use it like this.

Just like head will show the beginning of a file, tail will show the end of it. Here's an example.

Again, the -n switch can be used to modify the number of lines output.

There are also some more advanced options. You can learn about them by checking out the man pages.

Comments

One Response to “Command Line Basics: head And tail”

1. maryam says:

   October 10, 2012 at 8:34 AM

   tail -f

   Reply