Simon Burge writes:
>> 2) a flag should be added to force either behaviour

> ITOH Yasufumi suggested -B to force BSD mode and -A to force AT&T (or
> SysV) mode - it's a pity that BSD already pinched -S.  Since -B isn't
> used anywhere and -A is only used on SysV mode this will be easy.

Using the -A flag in order to get SysV behavior will also cause ps to
list information for all processes (what the -A flag does for SysV
ps), even though that may not be the output you want.
"ps -A -p 1" is different from "ps -p 1" on a SysV system.
					-jarle