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UGU: Unix Guru Universe - Unix Tip #4116- May 19, 2012
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 Unix Tip #4116- May 19, 2012
 
KEEP THE USERS OFF WITH NOLOGIN  
  
There is a way to disable any new login attempts into a  
system. This can be achieved by simply creating a file  
called /etc/nologin.  
  
It can have a null file size or a message can be  
placed into the file informing the status of the  
system. If a user attempts to login remotely, a  
message will display with contents of the  
/etc/nologin file, and then disconnect the user.  
  
However, ftp connections are not affected by this, if  
ftpd is running.  
  
 NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
  
LAST 5 TIPS
 4115
 - KILL A USER, IN THE UNIX SENSE
 4114
 - JUST THE DIRECTORIES
 4113
 - LOCK THAT FILE DOWN
 4112
 - UMOUNT BUSY DEVICES
 4111
 - UPGRADING OPERATING SYSTEMS
 
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