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bash. success or exit

dportabella
dportabella asked
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Last Modified: 2013-12-26
In a bash script,
I need that if a command fails, the script exits.

Now I do as follows:
++++++++
cat example.txt
if [ $? -ne 0 ]; then exit; fi;
++++++++

is there a more compact way of doing this?
something like
cat example.txt  __SUCCESS_OR_DIE__

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Commented:
Hello Ahoffmann,

Thanks, it works.
But could you explain the solution a little bit, please?

what is "||"?
a double pipe? what does it mean?

what means "42" after exit?
I did "man exit", but instead of explanation about exit, there is a very short explanation about shell commands.
How to find the explanation of the arguments of exit?

Many thanks,
DAvid
Top Expert 2007
Commented:
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