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This section describes how to distinguish various kinds of files, such as directories, symbolic links, and ordinary files.
file-symlink-p
function returns the file name to which it is linked. This may be the
name of a text file, a directory, or even another symbolic link, or it
may be a nonexistent file name.
If the file filename is not a symbolic link (or there is no such file),
file-symlink-p
returns nil
.
(file-symlink-p "foo") => nil (file-symlink-p "sym-link") => "foo" (file-symlink-p "sym-link2") => "sym-link" (file-symlink-p "/bin") => "/pub/bin" |
t
if filename is the name of an
existing directory, nil
otherwise.
(file-directory-p "~rms") => t (file-directory-p "~rms/lewis/files.texi") => nil (file-directory-p "~rms/lewis/no-such-file") => nil (file-directory-p "$HOME") => nil (file-directory-p (substitute-in-file-name "$HOME")) => t |
t
if the file filename exists and is
a regular file (not a directory, named pipe, terminal, or
other I/O device).