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Diff for /src/usr.bin/su/su.1 between version 1.7 and 1.8

version 1.7, 1998/09/27 16:57:54 version 1.8, 1999/06/05 01:21:41
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 .Op Fl Kflm  .Op Fl Kflm
 .Op Ar login Op Ar "shell arguments"  .Op Ar login Op Ar "shell arguments"
 .Sh DESCRIPTION  .Sh DESCRIPTION
 .Nm su  .Nm
 requests the Kerberos password for  requests the Kerberos password for
 .Ar login  .Ar login
 (or for  (or for
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 .Ar "shell arguments"  .Ar "shell arguments"
 after the login name  after the login name
 are passed to the shell.  are passed to the shell.
 .Nm su  .Nm
 will resort to the local password file to find the password for  will resort to the local password file to find the password for
 .Ar login  .Ar login
 if there is a Kerberos error or if Kerberos is not installed.  if there is a Kerberos error or if Kerberos is not installed.
 If  If
 .Nm su  .Nm
 is executed by root, no password is requested and a shell  is executed by root, no password is requested and a shell
 with the appropriate user ID is executed; no additional Kerberos tickets  with the appropriate user ID is executed; no additional Kerberos tickets
 are obtained.  are obtained.
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 .Ev TERM  .Ev TERM
 is imported from your current environment.  is imported from your current environment.
 The invoked shell is the target login's, and  The invoked shell is the target login's, and
 .Nm su  .Nm
 will change directory to the target login's home directory.  will change directory to the target login's home directory.
 .It Fl m  .It Fl m
 Leave the environment unmodified.  Leave the environment unmodified.
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 .Xr getusershell 3 )  .Xr getusershell 3 )
 and the caller's real UID is  and the caller's real UID is
 non-zero,  non-zero,
 .Nm su  .Nm
 will fail.  will fail.
 .El  .El
 .Pp  .Pp
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 .Fl m  .Fl m
 options are mutually exclusive; the last one specified  options are mutually exclusive; the last one specified
 overrides any previous ones.  overrides any previous ones.
 .Pp  .Pp
 If the optional  If the optional
 .Ar "shell arguments"  .Ar "shell arguments"
 are provided on the command line, they are passed to the login shell of  are provided on the command line, they are passed to the login shell of
 the target login.  This allows it to pass arbitrary commands via  the target login.  This allows it to pass arbitrary commands via
 the  the
 .Fl c  .Fl c
 option as understood by most shells.  Note that  option as understood by most shells.  Note that
 .Fl c  .Fl c
 usually expects a single argument only; you have to quote it when  usually expects a single argument only; you have to quote it when
 passing multiple words.  passing multiple words.
 .Pp  .Pp
 If group 0 (normally  If group 0 (normally
 .Dq wheel )  .Dq wheel )
 has users listed then only those users can  has users listed then only those users can
 .Nm su  .Nm
 to  to
 .Dq root .  .Dq root .
 It is not sufficient to change a user's  It is not sufficient to change a user's
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 If no one is in the  If no one is in the
 .Dq wheel  .Dq wheel
 group, it is ignored, and anyone who knows the root password is permitted to  group, it is ignored, and anyone who knows the root password is permitted to
 .Nm su  .Nm
 to  to
 .Dq root .  .Dq root .
 .Pp  .Pp
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 prompt is set to  prompt is set to
 .Dq Sy \&#  .Dq Sy \&#
 to remind one of its awesome power.  to remind one of its awesome power.
 .Sh EXAMPLES  .Sh EXAMPLES
 .Bl -tag -width 5n -compact  .Bl -tag -width 5n -compact
 .It Li "su bin -c makewhatis"  .It Li "su bin -c makewhatis"
 Runs the command  Runs the command
 .Li makewhatis  .Li makewhatis
 as user  as user
 .Li bin .  .Li bin .
 You will be asked for bin's password unless your real UID is 0.  You will be asked for bin's password unless your real UID is 0.
 .Pp  .Pp
 .It Li "su bin -c 'makewhatis /usr/local/man'"  .It Li "su bin -c 'makewhatis /usr/local/man'"
 Same as above, but the target command consists of more than a  Same as above, but the target command consists of more than a
 single word.  single word.
 .Pp  .Pp
 .It Li "su -l foo"  .It Li "su -l foo"
 Pretend a login for user  Pretend a login for user
 .Li foo .  .Li foo .
 .El  .El
 .Sh SEE ALSO  .Sh SEE ALSO
 .Xr csh 1 ,  .Xr csh 1 ,
 .Xr kerberos 1 ,  .Xr kerberos 1 ,
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 user ID.  user ID.
 .It Ev LOGNAME  .It Ev LOGNAME
 The user ID is always the effective ID (the target user ID) after an  The user ID is always the effective ID (the target user ID) after an
 .Nm su  .Nm
 unless the user ID is 0 (root).  unless the user ID is 0 (root).
 .It Ev USER  .It Ev USER
 Same as  Same as
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