How to touch a file and mkdir if needed in one line

Question

I need to touch a file with an absolute file name such as: /opt/test/test.txt, but I'm not sure if there is /opt/test existed on the system. So the code should similar with this:

if (-d '/opt/test') {     touch '/opt/test/test.txt'; } else {     mkdir -p '/opt/test';     touch '/opt/test/test.txt' } 

Is there any better way to simplify the code? I hope there is some system commands that can do the same job with only one line.

Answer 1

mkdir B && touch B/myfile.txt 

Alternatively, create a function:

   mkfile() {      mkdir -p $( dirname "$1") && touch "$1"     } 

Execute it with 1 arguments: filepath. Saying:

mkfile B/C/D/myfile.txt 

would create the file myfile.txt in the directory B/C/D.