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Re: How to continue upon encountering nonexistent input files?
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From: |
Andrew J. Schorr |
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Subject: |
Re: How to continue upon encountering nonexistent input files? |
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Date: |
Fri, 25 Feb 2022 14:32:26 -0500 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Feb 25, 2022 at 01:23:10PM -0600, Peng Yu wrote:
> $ awk -e '{ print }' x.txt <(builtin printf '%s\n' {1..3})awk: fatal:
> cannot open file `x.txt' for reading: No such file or directory
>
> As shown above, the above command stops when a nonexistent file is
> encountered. Is there a way to let awk keep on proceeding (but allows
> a way to handle the error in the awk code, e.g., print a customized
> error message)?
Please use a BEGINFILE rule, described in the docs:
https://www.gnu.org/software/gawk/manual/html_node/BEGINFILE_002fENDFILE.html
Regards,
Andy