work-dir

Functions
get-working-directory
set-working-directory directory &optional (default t)
Macros
with-working-directory (directory &rest arg) &body body
get-working-directory   [Function]
Return the process's working directory.
Value is a pathname.

Signal a file-error if the directory can not be determined.
set-working-directory  directory &optional (default t)  [Function]
Set the process's working directory to DIRECTORY.
Value is the pathname of the new working directory.

First argument DIRECTORY is either a string (interpreted as a
 directory file name) or a pathspec.
If optional second argument DEFAULT is true, adjust the special
 variable *default-pathname-defaults*, too.  This is the default.

Signal a file-error if the directory can not be changed.
with-working-directory  (directory &rest arg) &body body  [Macro]
Temporarily change the process' working directory to DIRECTORY
and evaluate BODY.