php man page for shells

SHELLS(5)						     Linux Programmer's Manual							 SHELLS(5)

NAME
       shells - pathnames of valid login shells

DESCRIPTION
       /etc/shells  is a text file which contains the full pathnames of valid login shells.  This file is consulted by chsh(1) and available to be
       queried by other programs.

       Be aware that there are programs which consult this file to find out if a user is a normal user; for  example,  FTP  daemons  traditionally
       disallow access to users with shells not included in this file.

FILES
       /etc/shells

EXAMPLE
       /etc/shells may contain the following paths:

	   /bin/sh
	   /bin/bash
	   /bin/csh

SEE ALSO
       chsh(1), getusershell(3), pam_shells(8)

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

								    2017-11-26								 SHELLS(5)