I was using msysgit and git-bash in cmder when I accidentally exited out of it.
Now I can\'t seem to figure out how to get to the unix environment I previously had.
Run the following command in cmder:
sh -l
This assumes that Git's "sh" is on your PATH. But if you installed git differently and sh is not found, then try entering the full path to it, for example:
"C:\Program Files (x86)\Git\bin\sh.exe" -l
If you want to automate this so you don't have to run sh explicitly, then go into cmder/ConEmu's settings and change the {cmd} task to have the command sh -l and the parameters /dir "%HOME%". Then cmder will always start up Git Bash by default, instead of Microsoft's cmd shell.