First post, by ProDigit
Use the 'SET' command, to get back a lot of functionality of MSDOS/FreeDOS executables.
First, obtain either original MSDOS executable/command files (like defrag, mode, qbasic, lotus123 ….), or get the FreeDoS version here: http://www.freedos.org/download/.
For FreeDOS, use the USB FUll installer image, and use 7Z, WinRAR, or another compression program to open the image file; to extract all the files you need, and put them into a directory (say, named "DOS")
FreeDOS base DOS commands are found within the "FDSETUP\BIN\" folder.
FreeDOS extra DOS commands have to be extracted, but can be found within the "FDSETUP\PACKAGES\BASE\" folder.
Each .zip file, has a 'BIN' directory in it, with executable files, where of some can be ran from DOSBox.
Mount the directory inside DOSBox, (or if the directory already is in a mounted DOSBox directory, it'll automatically appear upon the next DOSBox reboot).
type:
set path=DOS
where 'DOS' = the directory you've put the DOS commands in, or you can also set it to the drive you've mounted your folder to.
Now you should be able to run all compatible programs that are copied in this directory, straight from anywhere inside DOSBox.