As already suggested, you can use autochdir, which will change to the directory of the file you opened, the other option is
:cd mydirectory
which will change the directory. This can be an absolute or relative path, so :cd ..
will move up one level. Or you can use :cd %:h
which will also change to the directory the current file is in, but without setting autochdir.
:cd
will change directory to your home directory (or on windows, print the current directory).
:cd -
will change the directory to the previous directory you visited.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…