Some tips in Windows.

This is very simple tips. Anyway might me helpful to somebody :)

1) How to list the environmental variables in Windows?

SET command displays all the Environmental variables.

2) How do you know if a windows file in your path is executable?

We can check this by checking the extension of the file. The extensions which one system considers as executable can be found out from the environment variable PATHEXT. We can get the list of executable extensions by echo %PATHEXT%.

3) How do you determine if a windows program is in your path?

We can check this by checking the PATH environment variable of the program. echo %PATH% with give the path of that program.