Bash script echo variable to file

Connect and share knowledge within a single location that is structured and easy to search. Drop the single quotes around the here-document limit string EOF to avoid suppressing parameter substitution. More details here. Especially take note of " Example Parameter substitution turned off " and " Example A script that generates another script ". Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn more. How to echo variables using cat into file? Ask Question. Once you have provided all the inputs, you will notice that a new text file named BioData. You can verify it by taking a look at the image shown below:. Now you can either verify its contents by double-clicking on it or you can even view it via the terminal.

Just type the following command in your terminal to do this:. This command will display all the values stored in the specified file i. You can easily see from the image shown below that all of our variables have been written to the specified text file:. By performing the steps described in this article, you can easily write as many variables to a file as you want and hence you can use the values of these variables later on as well.

Karim Buzdar holds a degree in telecommunication engineering and holds several sysadmin certifications. As an IT engineer and technical author, he writes for various web sites. He blogs at LinuxWays. Method of Writing a Variable to a File in Ubuntu For doing this, you will have to proceed as follows: First of all, we will be writing a Bash program that is capable of taking user input and saving it in a text file.

For that, we need to go to the File Manager as highlighted in the image shown below: The File Manager will directly take us to the Home directory where we will create our Bash file so that it is easily accessible. Just you need to declare and assign value to a variable and then simply echo the value of the variable. For your good understanding, we will discuss some examples which are given below:.

Now, using the echo command we can simply display its value on the terminal as follows:. For example, we want to display the date and hostname of our computer. So, we will store the date and hostname commands in var1 and var2 respectively. You can see the implementation as follows:. In this article, we have shown how to display a variable value or text output by using the echo command.

We have executed different bash variables examples on the terminal for better understanding. From the above commands, I hope now you are familiar with how to echo variables and text in bash programming.