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SU(1)			     General Commands Manual			   SU(1)

NAME
     su -- substitute user identity

SYNOPSIS
     su [-K | --no-kerberos] [-f] [-l | --full] [-m] [-i instance |
	--instance=instance] [-c command | --command=command] [login [shell
	arguments]]

DESCRIPTION
     su  will use Kerberos authentication provided that an instance for the user
     wanting to change effective UID is present in a file named .k5login in  the
     target user id's home directory

     A	special  case exists where `root's' ~/.k5login needs to contain an entry
     for: `user/<instance>@REALM' for su to succed (where <instance>  is  `root'
     unless changed with -i).

     In  the  absence  of either an entry for current user in said file or other
     problems like missing `host/hostname@REALM' keys in the system's keytab, or
     user  typing  the	wrong  password,  su  will  fall  back	to   traditional
     /etc/passwd authentication.

     When using /etc/passwd authentication, su allows `root' access only to mem-
     bers  of  the  group  `wheel', or to any user (with knowledge of the `root'
     password) if that group does not exist, or has no members.

     The options are as follows:

     -K, --no-kerberos don't use Kerberos.

     -f don't read .cshrc.

     -l, --full simulate full login.

     -m leave environment unmodified.

     -i instance, --instance=instance root instance to use.

     -c command, --command=command command to execute.

HEIMDAL 			January 12, 2006			   SU(1)

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