reset console

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LEARN ABOUT CENTOS

vlock

VLOCK(1)						      General Commands Manual							  VLOCK(1)

NAME

       vlock - Virtual Console lock program

SYNOPSIS

       vlock

       vlock [ -a,--all ] [ -c,--current ] [ -h,--help ] [ -v,--version ]

DESCRIPTION

       vlock  is  a  program  to lock one or more sessions on the Linux console.  This is especially useful for Linux machines which have multiple
       users with access to the console.  One user may lock his or her session(s) while still allowing other users to use the system on other vir-
       tual consoles.  If desired, the entire console may be locked and virtual console switching disabled.

       By  default,  only  the	current  VC  (virtual  console)  is locked.  With the -a,-all option all VCs are locked.  The locked VCs cannot be
       unlocked without the invoker's password.  And, for the paranoid, vlock makes it a trying experience for those attempting to guess the pass-
       word, so unauthorized access to session(s) is highly unlikely.

       Please  note  that  it  is entirely possible to completely lock yourself out of the console with the -a,--all option if you cannot remember
       your password!  Unless you are able to kill vlock by logging in remotely via a serial terminal or network, a hard reset is the only  method
       of ``unlocking'' the display.

       vlock  works  for  console sessions primarily.  However, there is support for trying to lock non-console sessions as well, but that support
       has not been well tested.

OPTIONS

       -a,--all

	      Lock all console sessions and disable VC switching.

       -c,--current

	      Lock the current session (this is the default).

       -h,--help

	      Print a brief help message.

       -v,--version

	      Print the version number of vlock.

AUTHOR

       Michael K. Johnson <johnsonm@redhat.com>

Linux User's Manual						    16 May 1996 							  VLOCK(1)

HP-UX