问题
When I execute a .bat script from bash in Cygwin, by what mechanism is it running? I understand that if I run a .EXE it will launch, regardless of whether the .EXE is from Cygwin or from a more traditional environment. I understand that when I execute an executable script with #! at the beginning that Cygwin supplies the magic for it to run.
But why does a .bat script work? Is there some component inside of Cygwin that is aware of what a Windows .bat script is and what to do with it? Or is it that it is somehow impossible under Windows to execute a call to launch a .EXE file that won't automatically also work for a .bat script instead?
回答1:
Running
./test.bat params
from bash seems to be equivalent to
cmd /c test.bat params
回答2:
I believe that bash in cygwin sees the bat extension as being flagged executable (a cygwin hit-tip to windows convention). As such it loads and executes the file with it's associated interpreter (cmd.exe, per os configuration), much as it creates a new instance of bash to run your #! scripts (per posix standard).
回答3:
And if you want to fork an *.cmd file execution like a ShellScript process and append his log to an file:
cmd /c test.bat > nohup.out &
Enjoy!
来源：https://stackoverflow.com/questions/787522/why-is-it-that-cygwin-can-run-bat-scripts