What file does the `ls` command command output to when redirected to a file?

When the output of the ls command is redirected to a file, the specified filename is where the output will be stored. In this case, "filelist.txt" is the filename being used for redirection. The ls command lists the contents of a directory, and when you redirect its output using the > operator followed by a filename, it creates (or overwrites, if it already exists) that file with the command's output.

For example, if you run ls > filelist.txt, the contents listed by the ls command will be written into "filelist.txt" in the current working directory. The choice of "filelist.txt" explicitly indicates the intended destination for the output rather than a general location like the home directory, current working directory, or root directory. Each of those other options refers to broader directory locations, which do not specifically indicate the output file intended for the ls command in the context of redirection.