GETUSERSHELL(3) BSD Programmer's Manual GETUSERSHELL(3)NAME
getusershell, setusershell, endusershell - get legal user shells
SYNOPSIS
#include <unistd.h>
char *
getusershell(void);
void
setusershell(void);
void
endusershell(void);
DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as
defined by the system manager in the file /etc/shells. If /etc/shells is
unreadable or does not exist, getusershell() behaves as if only /bin/sh,
/bin/csh and /bin/mksh were listed in the file.
The getusershell() function reads the next line (opening the file if
necessary); setusershell() rewinds the file; endusershell() closes it.
FILES
/etc/shells
DIAGNOSTICS
The routine getusershell() returns a null pointer on EOF.
SEE ALSOshells(5)HISTORY
The getusershell() function appeared in 4.3BSD.
BUGS
The getusershell() function leaves its result in an internal static ob-
ject and returns a pointer to that object. Subsequent calls to getuser-
shell() will modify the same object.
MirOS BSD #10-current June 4, 1993 1