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UTERMINAL

                    TERMINAL                  

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 $V1$

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BOX

                       ILLUSTRATION                     

GO

 Assuming that the user george is to operate

 in a restricted shell, his entry in the

 /etc/passwd file would be as shown above.

   root:sfshnNwQSjnpE:0:0::/:/bin/sh

   cron:X:1:2::/:

   admin::2:0::/:/bin/adminsh

   bin:X:3:3::/:

   uucp::4:4::/usr/spool/uucp:/usr/lib/uucp/uucico

   network:X:7:7::/usr/spool/micnet:

   yori:nRfPQoxTi52WI:101:100::/usr/yori:/bin/sh

   michael:WCSLzdMC9uvsE:102:100::/usr/miked:/bin/sh

   guest::150:200::/usr/demo:/bin/rsh

   george::151:200::/usr/george:/bin/rsh

 Note that the HOME/login program is /bin/rsh!

 The .profile or .login file for the user 

george will have the form similar to the one shown above.

      cat .profile

      PATH=.:/usr/rbin:/usr/george/bin

      export PATH

      SHELL=/bin/rsh

      export SHELL

 The commands in the /usr/rbin directory are as shown above.

      ls /usr/rbin

      cat

      pwd

      echo

      ls

 Note that the restricted user may execute the 

 commands only in his own directory or in the

 the directory /usr/rbin; of course, commands

 must be copied into those directories!

 The cd command is built into the Shell itself 

 so you don't need to (nor can you) put it into the 

 /usr/bin directory. 

 Let us see the result when a cd is attempted by

 a restricted user typing cd /usr/bin

 $PROMPT$

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

 Please type cd /usr/bin

 Please type cd /usr/bin

 You will be helped this time!

 $PROMPT$

FORGET1

 cd /usr/bin                           

 Observe the result on the terminal!             

 cd: restricted  

 $PROMPT$