SunOS 4.1 vs. SunOS 5.4 differences

batch (changed)

-c, -s, and -m options not available
no queuename specified by default

cat (changed)

-t and -e options require -v
FORMFEED characters displayed with -t, not -v

chfn (missing)

no alternatives! 'passwd -f' doesn't work, either

chgrp (changed)

doesn't change the ownership of a symbolic link itself (to do that, use the option -h), but follows the link

chmod (changed)

-R option changes the mode of the target when it's a symbolic link

chsh (missing)

no alternatives! 'passwd -s' doesn't work, either

cp (changed)

-R option is replaced by -r

df (changed)

use -k option or use the version in /usr/ucb

dff (missing)

temporary?

diff (changed)

-c[#] becomes -C #, -S# becomes -S # (i.e. you need a space)

du (changed)

use 'du -k' to get the same result (usage in kilobytes)

ff (changed)

-f and -p options not available
ff now matches substrings, not whole filenames or beginnings (because it's actually just an alias for a new command, locate).
Use ff '/<string>' to find just file/directory names beginning with the string.

file (changed)

-L option not available

find (changed)

-n option not available

join (changed)

the value of argument of the -a option can only be 1 or 2
there is no restriction on the argument of the -j option

leave (missing)

the cron and at commands provide similar functionality

ln (changed)

removes the target (if it already exists), given proper permissions

load (missing)

not available

man (changed)

the organization of the man pages has changed (see 'man intro')
it is now possible to specify a default order of directories for man to search
there are two new options, -a and -l

mv (changed)

use -- instead of - to mark the end of the options in order to recognize a filename beginning with -

nice (changed)

now defaults to 10

nohup (changed)

(doesn't say in what way)

passwd (changed)

the -f and -s options have different meaning, i.e. they can no longer be used to change the full name and the login shell, respectively

pr (changed)

(doesn't say in what way), man pages look very different

ps (changed)

options -C, -k, -n, -r, -S, -U, -v, -w, and -x are not available
-c and -e options have different meaning
the familiar version is available in /usr/ucb

reset (different)

is a completely different command

rlogin (changed)

the ~dsusp escape sequence is not available
a space is needed after the -e option

rm (changed)

use -- instead of - to mark the end of the options in order to recognize a filename beginning with -

sed (changed)

does not strip initial SPACE and TAB characters from text lines

sort (changed)

(doesn't say in what way) man pages look quite different

spell (changed)

-h spellhist option isn't available

stty (changed)

the following options are not available: decctlq, tandem, cbreak, ctlecho, prterase, crtkill, cols, tab3, crt, dec, term

su (changed)

-f option not available

sum (changed)

(doesn't say in what way)

test (changed)

(doesn't say in what way)
the familiar version is available in /usr/ucb

time (changed)

different output format

touch (changed)

-f option not available

tr (changed)

(doesn't say in what way)
the familiar version is available in /usr/ucb

trace (missing)

truss has similar functionality

tset (changed)

-S option not available

whatis (changed)

(doesn't say in what way)
I suspect it's just the different results due to the new structure of man pages