| .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
| .\" |
| .\" Permission is granted to make and distribute verbatim copies of this |
| .\" manual provided the copyright notice and this permission notice are |
| .\" preserved on all copies. |
| .\" |
| .\" Permission is granted to copy and distribute modified versions of this |
| .\" manual under the conditions for verbatim copying, provided that the |
| .\" entire resulting derived work is distributed under the terms of a |
| .\" permission notice identical to this one. |
| .\" |
| .\" Since the Linux kernel and libraries are constantly changing, this |
| .\" manual page may be incorrect or out-of-date. The author(s) assume no |
| .\" responsibility for errors or omissions, or for damages resulting from |
| .\" the use of the information contained herein. The author(s) may not |
| .\" have taken the same level of care in the production of this manual, |
| .\" which is licensed free of charge, as they might when working |
| .\" professionally. |
| .\" |
| .\" Formatted or processed versions of this manual, if unaccompanied by |
| .\" the source, must acknowledge the copyright and authors of this work. |
| .\" |
| .\" References consulted: |
| .\" Linux libc source code |
| .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) |
| .\" 386BSD man pages |
| .\" Modified Sat Jul 24 19:17:53 1993 by Rik Faith (faith@cs.unc.edu) |
| .TH GETUSERSHELL 3 1993-07-04 "BSD" "Linux Programmer's Manual" |
| .SH NAME |
| getusershell, setusershell, endusershell \- get legal user shells |
| .SH SYNOPSIS |
| .nf |
| .B #include <unistd.h> |
| .sp |
| .B char *getusershell(void); |
| .sp |
| .B void setusershell(void); |
| .sp |
| .B void endusershell(void); |
| .fi |
| .SH DESCRIPTION |
| The \fBgetusershell\fP() function returns the next line from the file |
| \fI/etc/shells\fP, opening the file if necessary. The line should contain |
| the pathname of a valid user shell. If \fI/etc/shells\fP does not exist or |
| is unreadable, \fBgetusershell\fP() behaves as if \fI/bin/sh\fP and |
| \fI/bin/csh\fP were listed in the file. |
| .PP |
| The \fBsetusershell\fP() function rewinds \fI/etc/shells\fP. |
| .PP |
| The \fBendusershell\fP() function closes \fI/etc/shells\fP. |
| .SH "RETURN VALUE" |
| The \fBgetusershell\fP() function returns a NULL pointer on end-of-file. |
| .SH FILES |
| .nf |
| /etc/shells |
| .fi |
| .SH "CONFORMING TO" |
| 4.3BSD |
| .SH "SEE ALSO" |
| .BR shells (5) |