In the bash man page's section for "cd" it says An argument of - is equivalent to $OLDPWD. If a non-empty directory name from CDPATH is used, or if - is the first argument, and the directory change is successful, the absolute pathname of the new working directory is written to the standard output.
The first sentence is potentially confusing as "cd -" is not 100% equivalent to "cd $OLDPWD". I would word the above as If a non-empty directory name from CDPATH is used, or if - is the first argument, and the directory change is successful, the absolute pathname of the new working directory is written to the standard output. An argument of - is otherwise equivalent to $OLDPWD. Jason
