comcom64 is a command.com-alike 64bit shell for DOS.
This repository also contains the build recipe for 32bit version.

Install the needed build tools.
You can see the list of them for ubuntu or for fedora

Then just run make.

To build the 32bit version, install djgpp and run make 32.

Running sudo make install installs the 64bit version for the use with dosemu2.

Just run dosemu and it should boot the installed comcom64.

You can navigate the command history with mouse wheel.

All buttons have 2 functions: one activates when you click on a text area outside of a cursor row, and another activates when you click inside the cursor row.

Left button:

• types clicked char
• moves the cursor to the clicked location

Middle button:

• Enter
• BackSpace

Right button:

• Tab completion
• truncate or clear line

There is a mouseopt command that controls mouse behavior. It has the following switches:

• /M - initialize mouse (if /M was not passed to comcom on start)
• /E[1|0] - enable/disable mouse
• /C[0|1] - enable/disable external control

External control allows to control other programs with mouse. For example you can execute mouseopt /c, then run freecom and control it with mouse similar to comcom64, even though freecom is mouse-unaware by itself.