How to append string/data to a file in Linux

Posted by sood on Monday, February 23rd, 2009 in Linux/Unix

This article will show you how to append a string (or any data) to the end of a file under Linux/Unix. Appending is done very simply by using the append redirect operator >>. Simply use the operator in the format data_to_append >> filename and you’re done. Below are several examples:

Examples to Append Data to a File

  1. To append the string “hello” to file greetings.txt

    2. echo "hello" >> greetings.txt

  2. To append the contents of the file temp.txt to file data.txt

    3. cat temp.txt >> data.txt

  3. To append the current date/time timestamp to the file dates.txt

    4. date >> dates.txt


{ 11 Comments }

  1. was helpful

  2. Thanks a lot!

  3. realy helpful, thanks!

  4. Thank you, it helped me a lot.

  5. how can add the data to the file without open the file in UNIX/Linux ?

  6. Great article!
    Thanks

  7. Thanks, ’twas helpful !!

  8. Awesome, thanks!

  9. Thanks a lot.. really helped.:)

  10. Thanks for the comments. Are there any other examples that you think should be added to this article? Anything else you all are looking for?

    Thanks,
    Sood

  11. this was really helpful…

Please post your comments/suggestions!