Read file for bash

The output will show the content of employee. You can show the original content of employee. Create a file named company2. The output will show the file content without any backslash. You will need to read the file for many programming purposes. For example, you can search or match any particular content easily from any file by reading each line separately.

JavaTpoint offers too many high quality services. Mail us on [email protected] , to get more information about given services. Please mail your requirement at [email protected] Duration: 1 week to 2 week. Bash Tutorial. Next Topic Bash Write File. Reinforcement Learning. R Programming. React Native. Python Design Patterns. Python Pillow. Python Turtle. Verbal Ability. This mechanism is named as for each some programming languages where a list is iterated over.

Bash provides different usages and syntax for the for loop but in general following syntax is used. One of the most used Numeric syntax. We will provide numbers as a list and iterate over given list. Every number in the list will be iterated inside the for loop one by one. In numeric syntax, it is very similar to the general syntax where we provide a collection of numbers. We will provide the files as a list and use them in each iteration.

In this type, we will iterate over the list of files like file1 , file2 , file3 etc. We can use bash commands output as items for iterate. The simplest usage for for loop is over given file names.

Since you are in the command line mode, you should use commands to read file in Linux. Before you how to view a file in Unix like systems, let me clarify that when I am referring to text files here.

There are different tools and commands if you want to read binary files. Cat simply prints the content of the file to standard display i. It cannot be simpler than this, can it? Cat becomes a powerful command when used with its options. I recommend reading this detailed tutorial on using cat command.

The problem with cat command is that it displays the text on the screen. Imagine if you use cat command with a file that has lines. So, what do you do in such a case? Use less command in Linux explained later. The nl command is almost like the cat command. The only difference is that it prepends line numbers while displaying the text in the terminal. There are a few options with nl command that allows you to control the numbering.

You can check its man page for more details. Less command views the file one page at a time.