curl --output append to a file (without >> redirection)

Question

Is there a way for curl to append output to an existing file using --output/-o option without overwriting it? I cannot use redirection:

curl http://url >> file

Because I am using a return code from curl:

response="$(curl --write-out "%{http_code}" --silent --output file http://url)"

John Kugelman · Accepted Answer · 2017-08-09 22:13:32Z

18

Give process substitution a try.

curl --output >(cat >> file) http://url

answered Aug 9, 2017 at 22:13

John Kugelman

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Comments

glenn jackman · Accepted Answer · 2017-08-09 22:05:53Z

3

It appears not. You can write to a temp file and then append to your actual output file:

tmp=$(mktemp)
trap "rm $tmp" EXIT

response=$(curl --output "$tmp" ...)

cat "$tmp" >> output.file

answered Aug 9, 2017 at 22:05

glenn jackman

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