OT: sed + exit status

[Mike Jeays]

On February 15, 2009 01:26:27 am Dimitar Vasilev wrote:
> >        .  Is sed "successful" is there are no instances of FOO?  Or
> > only if there is at least one instance of FOO and it is successfully
> > replaced by bar?
> >
> >        Respectfully,
> >
> >
> >                                        Robert Huff
> >
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>
> Hi Robert,
> try to use truss or strace to see the exit codes in both cases.
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 Both cases return an exit code of '0'. You can check more easily by putting 
the command 'echo $?' directly after the sed command.