Reading files is no big deal with bash: you just redirect the input to the script or pipe the output of another command into the script, or you could do it inside the script if the file names are pre-determined. You could also use process substitution to pass in the open files (command pipelines actually) from the command line.

One of the most powerful features of the Linux command line interface, (and other shells that conform to the POSIX standard) is the ability to pipeline output from one command as the input to another. This is done using the vertical bar or pipe character [ | ].

I’ve already shown you how to view files with the cat command. In today’s post I’m going to show you how to use the GNU cat command for its originally intended purpose: for joining multiple files together.

There are many ways to view files in GNU/Linux. One of the simplest command line tools for viewing files is cat. The cat command, short for concatenate, is actually intended for joining multiple files into one, but it works equally well for viewing text files.

There is always a time when working with the CLI that you will want to find a set of files by name, such as all JPEG images. The `find` command lets you do this and more. Let’s jump into the basic structure of a find command:

This article is part of the on-going 15 example series where 15 examples will be provided for a specific command or functionality. In this series, earlier we discussed about find command, crontab examples, grep command, history command, ping command, and wget examples. In this article, let us review 15 examples for Linux top command that will be helpful for both newbies and experts.

Locating files that you know exist, but you can’t remember where they are can be frustrating. There are a handful of GUI-based search tools for Linux and Unix, but if you prefer to work in the command line, or don’t have one of these special apps installed, you can often fall back on command line tool locate.

Understanding options that can be used with the Linux command cat. This command can be used to view, create, or join multiple text files together.

xclip is a command line interface to the X11 selections (X11 clipboard). It can also be used for copying files, as an alternative to sftp/scp, thus avoiding password prompts when X11 forwarding has already been setup. xclip reads from Standard Input or from one or more files and copy it to the X11 clipboard making it available to the X applications.