Append may refer to any of the following:
1. The process of attaching or combining data with another file or set of data.
How do I append two files together in the Windows command line?
How can I append text into a file in the Windows command line?
Using the echo command, you can append any text to a file. Below, is an example of an echo command that can be used at the Windows command line. In the example below, the echo command is echoing "this is an example" to the screen and ">>" is appending that echo to the test.txt file.
echo this is an example >> test.txt
Tip: When text is appended to a file, it is added at the end or bottom.
How do I append to a file that is open?
Many times when a file is open the program being used to open the file may write protect the file or mark it as in use. If a file is protected, you will get an error when attempting to append or write any data to that file. To append to a protected file, the program protecting the file must be closed.
2. Append is also an MS-DOS and FTP command that enables a user to open files in the specified directory as if they were in the current directory.