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setusershell(3)

NAME

     getusershell, setusershell, endusershell -- get valid user shells


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <unistd.h>

     char *
     getusershell(void);

     void
     setusershell(void);

     void
     endusershell(void);


DESCRIPTION

     The getusershell() function returns a pointer to a valid user shell as
     defined by the system manager in the shells database as described in
     shells(5).  If the shells database is not available, getusershell()
     behaves as if /bin/sh and /bin/csh were listed.

     The getusershell() function reads the next line (opening the file if nec-
     essary); setusershell() rewinds the file; endusershell() closes it.


FILES

     /etc/shells


DIAGNOSTICS

     The routine getusershell() returns a null pointer (0) on EOF.


SEE ALSO

     nsswitch.conf(5), shells(5)


HISTORY

     The getusershell() function appeared in 4.3BSD.


BUGS

     The getusershell() function leaves its result in an internal static
     object and returns a pointer to that object.  Subsequent calls to
     getusershell() will modify the same object.

FreeBSD 5.4		       January 16, 1999 		   FreeBSD 5.4

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