getusershell(3) -- Linux man page

 

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)