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Re: [Help-bash] Best way to suppress the error message in $(< nonexisten
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From: |
Peng Yu |
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Subject: |
Re: [Help-bash] Best way to suppress the error message in $(< nonexistent_file) |
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Date: |
Wed, 28 Nov 2018 07:59:10 -0600 |
> { x=$( <doesnotexist) ;} 2>&-
OK. Thanks. BTW, I think that 2>&- the same as 2>/dev/null
semantically the same. Is it so? Regarding the underlying operations,
are they exactly the same or they are slightly different? My
understanding is the former sets stderr to a null handle, but the
latter set stderr to an existing file handle, but the file handle is
/dev/null. So I'd think the former is a little faster. Is it? Thanks.
--
Regards,
Peng