osx man page for shells

SHELLS(5)						      BSD File Formats Manual							 SHELLS(5)

NAME
     shells -- shell database

DESCRIPTION
     The shells file contains a list of the shells on the system.  For each shell a single line should be present, consisting of the shell's path,
     relative to root.

     A hash mark (``#'') indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines
     which search the file.  Blank lines are also ignored.

FILES
     /etc/shells  The shells file resides in /etc.

SEE ALSO
     getusershell(3)

HISTORY
     The shells file format appeared in 4.3BSD-Tahoe.

4.2 Berkeley Distribution					   June 5, 1993 					 4.2 Berkeley Distribution