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[Help-bash] Is there a way to make unamed pipe nonexist upon error?
From: |
Peng Yu |
Subject: |
[Help-bash] Is there a way to make unamed pipe nonexist upon error? |
Date: |
Wed, 25 Sep 2019 22:39:17 -0500 |
Hi,
awk does not know there is not a file called nosuchfile.txt because
the unnamed pipe looks OK. Is there a way to make the pipe
unavailable, so that awk knows there is some error with the file `f`?
Thanks.
$ awk -v f=<(cat nosuchfile.txt) -e 'BEGIN { r = getline < f ; print r }'
cat: nosuchfile.txt: No such file or directory
0
--
Regards,
Peng
- [Help-bash] Is there a way to make unamed pipe nonexist upon error?,
Peng Yu <=