Bash redirect and append to non-existent file/directory

Question

When I use >> nonexistent/file.log. Bash gives me back "No such file or directory".

How can I make a one liner that redirects the STDOUT/STDERR to a log file, even if it doesn't exist? If it doesn't exist, it must create the necessary folders and files.

Answer 1

Using install :

command | install -D /dev/stdin nonexistent/file.log

or use

mkdir nonexistent

first.

Answer 2

You can use dirname to get the base path of the file, and later use it with mkdir -p. After that you can do the redirection:

sh mkdir -p `dirname nonexistent/file.log` echo blah >> nonexistent/file.log