[shells] / ushell.1

.\" -*-nroff-*-
.TH ushell 1 "20 April 1999" "Local tools"
.SH NAME
ushell \- display a user's shell
.SH SYNOPSIS
.B ushell
.I user
.SH USAGE
Writes the named user's default shell to standard output.  This is
useful in scripts sometimes.  In particular, it's handy in global
.B xdm/Xstartup
scripts for checking whether users have sensible shells:
.sp 1
.RS 5
.nf
.ft B
SHELL=`ushell $USER`
case $SHELL in
  */banned)
    xmessage -file $HOME/.banned
    exit 1
    ;;
  *)
    if ! grep -q "^$SHELL" /etc/shells; then
      xmessage "You're not allowed to log in this way."
      exit 1
    fi
    ;;
esac
.fi
.ft R
.SH BUGS
None planned.
.SH SEE ALSO
.BR banned (8),
.BR chrootsh (8).
.SH AUTHOR
Mark Wooding (mdw@nsict.org)
Commit	Line	Data
173be297	1	.\" --nroff--
ed36b0a2	2	.TH ushell 1 "20 April 1999" "Local tools"
	3	.SH NAME
	4	ushell \- display a user's shell
	5	.SH SYNOPSIS
	6	.B ushell
	7	.I user
	8	.SH USAGE
	9	Writes the named user's default shell to standard output. This is
	10	useful in scripts sometimes. In particular, it's handy in global
	11	.B xdm/Xstartup
	12	scripts for checking whether users have sensible shells:
	13	.sp 1
	14	.RS 5
	15	.nf
	16	.ft B
	17	SHELL=`ushell $USER`
	18	case $SHELL in
	19	*/banned)
	20	xmessage -file $HOME/.banned
	21	exit 1
	22	;;
	23	*)
	24	if ! grep -q "^$SHELL" /etc/shells; then
	25	xmessage "You're not allowed to log in this way."
	26	exit 1
	27	fi
	28	;;
	29	esac
	30	.fi
	31	.ft R
	32	.SH BUGS
	33	None planned.
	34	.SH SEE ALSO
	35	.BR banned (8),
	36	.BR chrootsh (8).
	37	.SH AUTHOR
	38	Mark Wooding (mdw@nsict.org)