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RedHat 9 (Linux i386) - man page for endusershell (redhat section 3)

GETUSERSHELL(3) 		    Linux 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 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
       BSD 4.3

SEE ALSO
       shells(5)

BSD					    1993-07-04				  GETUSERSHELL(3)


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