getusershell man page on 4.4BSD

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GETUSERSHELL(3)		 BSD Library Functions Manual	       GETUSERSHELL(3)

NAME
     getusershell, setusershell, endusershell — get legal user shells

SYNOPSIS
     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 /bin/sh and
     /bin/csh were listed in the file.

     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
     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.

4.3 Berkeley Distribution	 June 4, 1993	     4.3 Berkeley Distribution
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