Cygwin convert windows path to linux path

Using Cygwin Utilities: cygpath to convert windows path ↔ to linux path

steps

1. launch cygwin
2. input the following commands after $ symbol

convert windows path to linux path

$ cygpath -u 'c:\Users\User\Desktop\'
/cygdrive/c/Users/User/Desktop/

$ cygpath -u c:\Program Files\
met error, press ctrl+c to escape

enclose the whole path with single quote symbol if the path contains white space characters
$ cygpath -u 'c:\Program Files\'
/cygdrive/c/Program Files/

switch to the specified path

$ cd "$(cygpath -u 'c:\Program Files\')"
$ pwd
/cygdrive/c/Program Files

convert linux path to windows path

$ cygpath -w '/cygdrive/c/Program Files/'
c:\Program Files\