[SunHELP] Permissions on /usr/lib/rsh

[Chris Hall]

   Is this normal behavior ? 

# echo $SHELL
/sbin/sh
# uname -a
SunOS host0.mydomain.com 5.8 Generic_108528-13 sun4u sparc SUNW,UltraSPARC-IIi-Engine
# hostname
host0.mydomain.com
# ls -al /usr/lib/rsh
-r-xr-xr-x   4 root     root       95316 Mar 12  2002 /usr/lib/rsh
# chmod 000 /usr/lib/rsh
# ls -al /usr/lib/rsh
----------   4 root     root       95316 Mar 12  2002 /usr/lib/rsh
# clear
/bin/clear: Permission denied.
# hostname
/bin/hostname: Permission denied.
# /usr/bin/bash
bash-2.03# hostname
bash: /usr/bin/hostname: Permission denied
bash-2.03# clear
bash: /usr/bin/clear: Permission denied
bash-2.03# ls -al /usr/bin/clear /usr/bin/hostname /bin/hostname
-r-xr-xr-x   1 root     bin          525 Jan  5  2000 /bin/hostname
-r-xr-xr-x   1 root     bin          647 Jan  5  2000 /usr/bin/clear
-r-xr-xr-x   1 root     bin          525 Jan  5  2000 /usr/bin/hostname
bash-2.03# /usr/bin/clear
bash: /usr/bin/clear: Permission denied
bash-2.03# exit         
# chmod 555 /usr/lib/rsh
# hostname
host0.mydomain.com
#

   tcsh does the same thing. 

Man pages:

rsh             rsh (1)         - remote shell
rsh             rsh (1m)        - restricted shell command interpreter


-- 
Thanks,

- Chris Hall

  "The growing use of e-mail, not to mention Web-page publishing, threatens 
to reverse the trend towards illiteracy among the supposedly educated without, 
at the same time improving their spelling".
                                               -- Michael Swaine, Dr. Dobb's Journal