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April, 26th. 2006:
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GETUSERSHELL
Section: Linux Programmer's Manual (3)
Updated: 2007-07-26
Index
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NAME
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
4.3BSD.
SEE ALSO
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
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- FILES
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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