Shadow (file)
In Unix-like operating systems, /etc/shadow is used to increase the security level of passwords by restricting all but highly privileged users' access to hashed password data. Typically, that data is kept in files owned by and accessible only by the super user.
Famous quotes containing the word shadow:
“He [Pompey] stands, the shadow of a great name.”
—Marcus Annaeus Lucan (39–65)