michael@x054:[/home/michael]ls -li /bin/*sh
2475 -r-xr-xr-x 2 bin bin 595328 Oct 21 2005 /bin/Rsh
2475 -r-xr-xr-x 2 bin bin 595328 Oct 21 2005 /bin/bsh
2344 -r-xr-sr-x 1 root security 22692 May 10 2005 /bin/chsh
2476 -r-xr-xr-x 1 bin bin 151378 Jul 11 2005 /bin/csh
2039 lrwxrwxrwx 1 root system 29 Feb 20 2004 /bin/fcinit.csh -> /usr/sbin/rsct/bin/fcinit.csh
2038 lrwxrwxrwx 1 root system 28 Feb 20 2004 /bin/fcinit.sh -> /usr/sbin/rsct/bin/fcinit.sh
100 -r-xr-xr-x 15 bin bin 1453 Feb 20 2004 /bin/hash
2153 -r-xr-xr-x 4 bin bin 229928 Jan 21 2006 /bin/ksh
1451 -r-xr-xr-x 1 bin bin 239194 Nov 02 2005 /bin/msh
2153 -r-xr-xr-x 4 bin bin 229928 Jan 21 2006 /bin/psh
2481 -r-xr-xr-x 1 bin bin 934 Jan 20 2003 /bin/recsh
251 -r-xr-s--- 1 root system 5116 Feb 20 2004 /bin/refresh
168664 -r-sr-xr-x 2 root system 24770 Dec 21 2004 /bin/remsh
168664 -r-sr-xr-x 2 root system 24770 Dec 21 2004 /bin/rsh
2153 -r-xr-xr-x 4 bin bin 229928 Jan 21 2006 /bin/sh
2153 -r-xr-xr-x 4 bin bin 229928 Jan 21 2006 /bin/tsh
If you look carefully (inode numbers) you will see that /bin/sh is also /bin/ksh
