Write echo to file bash

The syntax of Heredoc is:. Launch terminal and run the script. As name indicating this command takes input and writes to a file and shows output simultaneously. The above command will create three files if they are not existed and write text to each of them.

This guide is focusing on multiple approaches to write to a file in bash with examples. I am a professional graphics designer with over 6 years of experience. Others mentioned, rather than from a fixed input source like echo 'text' , you could also interactively write to files via a "Here Document", which are also detailed in the link to the bash manual above. Those answers, e. In the above syntax, you write to the FILE. The writing only takes place after the interactive input is given some specific string, in this case 'EOF', but this could be any string, e.

Here Documents also look for various delimiters and other interesting parsing characters, so have a look at the docs for further info on that. A bit convoluted, and more of an exercise in understanding both redirection and Here Documents syntax, but you could combine Here Document style syntax with standard redirect operators to become a Here String:.

Can also use here document and vi, the below script generates a FILE. Then file will have 3 lines as below. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. Open and write data to text file using Bash? Ask Question. Asked 9 years, 6 months ago. Active 11 months ago. Viewed k times. How can I write data to a text file automatically by shell scripting in Linux? I was able to open the file. However, I don't know how to write data to it. Adnan Adnan 7, 9 9 gold badges 27 27 silver badges 45 45 bronze badges. See also stackoverflow. Add a comment. Active Oldest Votes. Philippe Fanaro 3, 1 1 gold badge 24 24 silver badges 53 53 bronze badges.

Rocky Pulley Rocky Pulley 21k 18 18 gold badges 65 65 silver badges bronze badges. What is the name of this operator? I would like to find a manual about it. Active 9 months ago. Viewed k times. I'm sure it's simple, but could anyone explain this to me? Add a comment. Active Oldest Votes. If you're wanting this as a script, the following Bash script should do what you want plus tell you when the file already exists :!

GreenMatt GreenMatt Could I replace it with "text. David Z David Z k 26 26 gold badges silver badges bronze badges. I think there's 1 other possible interpretation: create and write a newline if the file doesn't yet exist, else don't modify the file at all.

Justin: good point, I guess I can add that one too and we'll have all the options covered. Eric Aya Moh Moh 91 1 1 silver badge 1 1 bronze badge. Your question is a a bit vague. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.