Windows – How to know which file is open in Windows from command line

In bash, detach is a built-in, used as follows:

emacs &
detach %+ # or % + the number in brackets printed after the above

In zsh, you can background and detach in a single operation:

emacs &|

If you are currently in the command prompt and have a file called test.png and , which are located in c:\test you can do the following:

If you are at the directory (so should say c:\test>) just type:

test.png

which would open test in the default png picture editor.

If the files name contains spaces, then simply enclose the file name within " "

 "this image.png"

You can alternatively type:

c:\test\test.png

which will open the file no matter where you currently are.

Finally, you can pass the picture to another program. For example, if you have an image editor called imageedit.exe and it supports opening files through command lines (and if the program is pathed/accessible or you are in it's current directory), you can type the following:

 imageedit c:\test\test.png