Replying to a message of WAYNE CHIRNSIDE to ROSS CASSELL:

 RC>> What would have ever made you think the commandlines of one
 RC>> distribution is different from another, especially with the
 RC>> most popular shell in use, ie BASH?

 WC> Uh because some of the very important ones ARE!

 WC> Try rm filename on knoppix, it'll ask "are you sure you want
 WC> to delete this file? y/n"

 WC> IOW's rm -i in Slackware.

 WC> Not knowing this one little alias for rm in Knoppix wiped
 WC> out my OS one time transitioning form one to another.

Sounds like the little quirks that differentiated operator commands between
MVS (later OS/370, then OS/390, now Z-OS) and DOS/VSE (which is still
DOS/VSE, IBM stopped supporting it probably 30 years ago).  The commands
were identical but some of them did very different things.  F'rinstance:

$F   in DOS/VSE to alter the job to the
given parameter(s).
$F   in MVS flushes the job from the
system, the parameter(s)
are ignored.  No abend code, no return code, no report printout, no
nothing, it's just
gone (explain THAT to the customer ) - and note that the OS just
closes any open
files the job was using, it doesn't check for unfinished transactions or
anything like
that (a file or database can become corrupted and that fact might not be discovered
for some time).

Not paying close attention can cause a major 'oopsie' if one isn't careful and is 
familiar with both systems.

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