No such file or directory when trying to create a file with nano

Solution 1:

It seems like there is a typo in your question because there would normally be a blank space between nano and /etc/apt/apt.conf.d/... To create a new file named 02proxy in the /etc/apt/apt.conf.d directory (which normally already exists) open the terminal and type:

sudo touch /etc/apt/apt.conf.d/02proxy  

To open the 02proxy file for editing in nano text editor:

sudo nano /etc/apt/apt.conf.d/02proxy  

_{Nano text editor keyboard shortcuts
Use the keyboard combination Ctrl + O and after that press Enter to save the file to its current location.
Use the keyboard combination Ctrl + X to exit nano.}

Solution 2:

this behavior happen if the target directory doesn't exist. you have therefore to create the parent directory

mkdir my_dir

then use nano.

nano my_file

CTRL x=>y