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Discussion on: Stupid Short: Bash's |, >, >>, <, 2>>, 2> Operators

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fennecdjay profile image
Jérémie Astor

I think that in recent bash and zsh, one can use

call-foo &> out_and_err.txt
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sinewalker profile image
Mike Lockhart

This is my favourite "shut up, I don't want to see any output, even if it fails, just do, or don't do, the thing" shortcut:

call-foo &> /dev/null
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fennecdjay profile image
Jérémie Astor

I think you have a small typo here.
Shouldn't it read

call-foo &> /dev/null
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sinewalker profile image
Mike Lockhart

Thank you, fixed 😁

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fennecdjay profile image
Jérémie Astor

You're welcome.

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bananabrann profile image
Lee Author

I would've done call-foo > out-and-error.txt 2> out-and-error.txt; I've never heard of 2>&1 or &>. Very cool! Thanks for that!

What would be a practical application of print stdout and stderr to the same file?

@fennecdjay
@thorstenhirsch
@sinewalker

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sinewalker profile image
Mike Lockhart

Openssl prints diagnostic info to stderr and certificate info to stdout. If you want them both in the same filter stream, &> is very handy. Or if you want them all in the same single log file