Commands separated by pipe | character, how to execute them separately?

Question

The following two commands are separated by a pipe | character, which means they will be executed together, in one go:

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

I need to run them separately, as two commands.

Actually these commands download and install the public signing key for elastic search.

But for some reason, they are giving me

gpg: no valid OpenPGP data found.

My web search tells me that executing both the commands separately might solve my problem. So I am trying to do that.

So the first command wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch returns fine, while the second one sudo apt-key add - goes forever, and never returns.

- means use STDIN as input (ie the STDOUT of the command before the pipe). You need to give the key, if you are not piping to the command. — Zanna, Oct 06 '17 at 10:50
@Zanna Is there a way to somehow assign the key obtained as a result of 1st command to some kind of variable, and then use that variable in the second command? — Shy, Oct 06 '17 at 10:52
yes, do mykey=$(wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch) — George Udosen, Oct 06 '17 at 10:54
@George and then do sudo apt-key add $mykey in the second command right? — Shy, Oct 06 '17 at 11:01
I think the problem is not the pipe, but the key. Get the right key and it will work! — Zanna, Oct 06 '17 at 11:15
@George ok, good that it works for you, but I still think the syntax is not the real issue here - this is an established method... — Zanna, Oct 06 '17 at 12:06

score 0 · Accepted Answer · answered Oct 06 '17 at 11:04

0

First run:

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch -O mykey

Then run:

sudo apt-key add <<< mykey

answered Oct 06 '17 at 11:04

George Udosen

37,674

1

The second one still gives me gpg: no valid OpenPGP data found. – Shy Oct 06 '17 at 11:07
But this means the method to run those commands separately is correct, which answers this question. So thank you. – Shy Oct 06 '17 at 11:08

Commands separated by pipe | character, how to execute them separately?

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