SHELL

One command to create a directory and file inside it linux command

$ echo 'mkfile() { mkdir -p "$(dirname "$1")" && touch "$1" ;  }' >> ~/.bashrc
$ source ~/.bashrc
$ mkfile /your/directory/yourFile.txt

with which command make file and directory in linux

$ ls -FR thesis
chapter_1/

thesis/chapter_1:
section_1/

thesis/chapter_1/section_1:
subsection_1/

thesis/chapter_1/section_1/subsection_1:

how to create a directory and add files in linux on one line

mkdir B && touch B/myfile.txt