VLOCK – LOCK TERMINAL IN LINUX

lock terminal in linx

Sometimes we take a break in a company and we don’t want anyone to look or change our commands on current terminal we are working on or someone borrows our system for a minute and wants to practice but we don’t want him to look on what we are working on , On that scenarios VLOCK command is useful .  Vlock is a utility used to lock one or several terminals in linux . Vlock is important on a multi user system, it allows users to lock their own terminals while other users can still use the same system via other  terminals.

 

  • Install package which is required  for vlock .
[root@localhost ~]# yum install vlock*
Loaded plugins: rhnplugin, security
Repository 'a' is missing name in configuration, using id
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package vlock.i386 0:1.3-23 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================================
 Package                   Arch                     Version                       Repository             Size
==============================================================================================================
Installing:
 vlock                     i386                     1.3-23                        a                      11 k
Transaction Summary
==============================================================================================================
Install      1 Package(s)
Update       0 Package(s)
Remove       0 Package(s)
Total download size: 11 k
Is this ok [y/N]: y
  • Yum installer calculate file size . It will ask you whether you wanna install it or not . Type y and hit Enter .
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : vlock                                                                                  1/1
Installed:
  vlock.i386 0:1.3-23
Complete!
  • To lock terminal which you are currently working on . Type below commands .
  • After typing command it will ask you root (admin) password .
[root@localhost ~]# vlock -c
 *** This tty is not a VC (virtual console). ***
 *** It may not be securely locked. ***
This TTY is now locked.
Please enter the password to unlock.
root's Password:

VLOCK LOCK TERMINAL IN LINUX

  • Now to lock all terminals , type below commands .
  • And also give root password to lock all terminals .
[root@localhost ~]# vlock -a
 *** This tty is not a VC (virtual console). ***
 *** It may not be securely locked. ***
This TTY is now locked.
Please enter the password to unlock.
root's Password:

lock terminal in linux

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