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clogin(1)							     clogin(1)


NAME    [Toc]    [Back]

     clogin - login on the graphics console

SYNOPSIS    [Toc]    [Back]

     /usr/Cadmin/bin/clogin [ -f ] [ -g	]

DESCRIPTION    [Toc]    [Back]

     The clogin	command	is executed at the beginning of	each session on	the
     graphics console. It replaces the functionality of	the command login(1).
     The choice	between	login(1) and clogin is made on the basis of the
     configuration variable visuallogin(4).  If	this configuration variable is
     set to on then clogin is used in place of login(1).

     clogin displays a window containing two areas. The	top area contains
     either icons representing users who can log onto the system or an SGIlogo
 design. The bottom area contains a text field	into which the user
     can type a	login name.

     To	log in,	the user must first enter the correct login name. This can be
     done by typing it at the keyboard,	or by clicking with the	left mouse
     button on the icon	representing the user. The user	must then click	with
     the left mouse on the button labeled Login	or press the Enter key.
     Quickly clicking twice on the user	icon (double-clicking) will have the
     same effect as typing the login name and pressing the Enter key.

     If	the user has a password, a second text field is	displayed. The user
     must now type the correct password	and either click on the	Login button
     or	press Enter. If	the password is	correct, the login process begins.
     Otherwise,	clogin returns to its initial state.

     To	log in to an account for which an icon is not displayed, the user must
     type both the login name and the password.

     Users whose home directory	does not exist cannot log in with clogin and
     the user accounts will not	be displayed as	icons.

     The standard user icons may be replaced with color	or black & white
     images.  clogin will check	for the	files $HOME/.icons/login.icon,
     /usr/local/lib/faces/$USER	and /usr/lib/faces/$USER for login images,
     where $HOME represents the	user's home directory and $USER	represents the
     user's login name.	 The files must	be in SGI image	library	format,	and
     should be 100 by 100 pixels in size or smaller (although larger images
     will be scaled down automatically).  The images must be either RGB	color
     or	black &	white images; colormap images cannot be	displayed correctly.

     The login process for the graphics	console	may be automated by
     configuring the system to autologin.  The autologin process, when
     enabled, bypasses the clogin login	when a valid entry is read from
     /etc/autologin.  The entry	is then	used as	the identity for the session.
     Autologin is disabled by login once it has	successfully initiated a
     session on	the graphics console. Autologin	is enabled during boot time if
     the /etc/autologin	file exists.



									Page 1






clogin(1)							     clogin(1)



     If	the user is logging in on the graphics console,	xdm(1) initiates and
     manages a login session.  If the string FAILSAFE (or failsafe) is entered
     after the name, xdm(1) will bypass	its normal session initialization, and
     give the user a single window shell.  See xdm(1).

     For more information on how the initial environment is configured,	see
     login(1).

NOTES    [Toc]    [Back]

     The file /etc/passwd.sgi is no longer used	to determine which icons
     appear on clogin, and it is not used by the User Manager either. The
     /var/sysadm/config/clogin.conf file is used instead to customize the
     behavior of clogin	as described in	the next paragraph.  Please note that
     the path name of clogin.conf is changed from /var/Cadmin/clogin.conf to
     /var/sysadm/config/clogin.conf.

     ConfigClogin(1M) is available again in IRIX 6.5 and later releases.
     Accessible	from the System	Manager, it can	be used	to customize the
     behavior of clogin, including hiding icons	for certain users, displaying
     generic desktop-style geometric icons instead of photo-style images for
     users, and	displaying a larger clogin window to show more users.  When
     all users are hidden, the top section of the clogin window	will be	blank.


     When the environment variable noiconlogin(4) is set to on then icons are
     not displayed and in its place is the SGI logo.  To manually turn on the
     SGI-logo design (no user icons will be visible), execute the following
     command as	root:

     chkconfig noiconlogin on

     The image file of the logo	is /usr/Cadmin/images/cloginlogo.rgb. In IRIX
     6.5.14 and	later releases,	other image files are available	in the same
     /usr/Cadmin/images	directory: clogin-05.rgb, clogin-10.rgb, clogin18.rgb,
 clogin-21.rgb, clogin-25.rgb, and old-cloginlogo.rgb.  The	login
     design can	be customized by moving	aside the original cloginlogo.rgb file
     and copying one of	the other designs into its place (as root).

     Autologin is controlled by	the existence of the /etc/autologin.on file.
     The file is normally created at boot time to automate the login process
     and then removed by login or clogin to disable the	autologin process for
     succeeding	terminal sessions.

     The following issue applies only to the clogin tool, and only if the
     visuallogin variable is on	(see the chkconfig(1M) reference page):	 With
     visuallogin on, clogin provides only a rudimentary	form of	privacy
     control and security; when	it starts, it removes hosts from the access
     list (see the xhost(1) reference page).  Environments that	require	more
     sophisticated measures should turn	off the	visuallogin variable to	use
     the default xdm login screen (see the xdm(1) reference page).





									Page 2






clogin(1)							     clogin(1)



     Clogin doesn't support the	PATH variable in /etc/default/login.

     By	default, clogin	does not hang when accessing files from	down nfs
     servers.  This allows clogin to be	accessible even	when its face server
     goes down.	 If this feature causes	problems in your environment, it can
     be	disabled by changing the line:
	 *useNoHang: True
     to:
	 *useNoHang: False
     in	the file /usr/lib/X11/app-defaults/Clogin.

OPTIONS    [Toc]    [Back]

     -f	       Specifies the clogin window as the grab window.

     -g	       Disables	processing of requests and close downs on all
	       connections other than clogin.

FILES    [Toc]    [Back]

     /etc/passwd		       password	file
     /var/sysadm/config/clogin.conf    clogin configuration file
     /etc/config/noiconlogin	       configuration flag for displaying icons
     /etc/autologin		       autologin user identity
     /etc/autologin.on		       enable autologin	at boot	time

SEE ALSO    [Toc]    [Back]

      
      
     xdm(1), login(1), passwd(4), visuallogin(4), updateclogin(1M).


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