On Tue, 17 Jun 2008 06:16:24 +0000, Matthew Lincoln rearranged some
electrons to say:

> I am not sure about on how to specify that a second command should only
> be execute in case that the first command fails/succeeds.
>
> When I enter:
>
> cmd1 | gzip -f ... && cmd2
>
> Is then cmd2 executed only if cmd1 is finished successfully or if gzip
> is finished successfully?
>
> Is the command concatenation "&&" correct at all?
>
> What if I want cmd2 only to execute if both (cmd1 and gzip) end
> successfully?
>
> What about the other way: cmd2 should only be executed if
>
> a) cmd1 failed
>
> b) cmd1 or gzip failed?
>
> Matthew

Didn't you read the responses the first time you posted this question 3
days ago?

Seems like you would be better off writing a small script to do what you
want.

man bash

Greetings.

In article <485756b8$0$6616$9b4e6d93@newsspool2.arcor-online.net>, Matthew
Lincoln wrote:
> I am not sure about on how to specify that a second command should only
> be execute in case that the first command fails/succeeds.
>
> When I enter:
>
> cmd1 | gzip -f ... && cmd2
>
> Is then cmd2 executed only if cmd1 is finished successfully or if gzip is
> finished successfully?
>
> Is the command concatenation "&&" correct at all?
>
> What if I want cmd2 only to execute if both (cmd1 and gzip) end
> successfully?
>
> What about the other way: cmd2 should only be executed if
>
> a) cmd1 failed
>
> b) cmd1 or gzip failed?

This is pretty trivial to test empirically on your own:

$ true | false && echo foo
$ false | true && echo foo
foo
$ true | true && echo foo
foo
$ false | false && echo foo
$

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