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shells(5) [opendarwin man page]

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

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 2017-11-26 SHELLS(5)

Check Out this Related Man Page

GETUSERSHELL(3) 					     Linux Programmer's Manual						   GETUSERSHELL(3)

getusershell, setusershell, endusershell - get permitted user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): getusershell(), setusershell(), endusershell(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) DESCRIPTION
The getusershell() function returns the next line from the file /etc/shells, opening the file if necessary. The line should contain the pathname of a valid user shell. If /etc/shells does not exist or is unreadable, getusershell() behaves as if /bin/sh and /bin/csh were listed in the file. The setusershell() function rewinds /etc/shells. The endusershell() function closes /etc/shells. RETURN VALUE
The getusershell() function returns a NULL pointer on end-of-file. FILES
/etc/shells CONFORMING TO
shells(5) COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at GNU
2007-07-26 GETUSERSHELL(3)
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