Passing multiple sets of arguments to a command

Posted by Alec on Super User See other posts from Super User or by Alec
Published on 2012-10-25T17:47:08Z Indexed on 2012/10/25 23:04 UTC
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command-line

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bash

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xargs

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command-line-arguments

instances contains several whitespace separated strings, as does snapshots. I want to run the command below, with each instance-snapshot pair.

ec2-attach-volume --instance $instances --device /dev/sdf $snapshots

For example, if instances contains A B C, and snapshots contains 1 2 3, I want the command to be called like so:

ec2-attach-volume -C cert.pem -K pk.pem --instance A --device /dev/sdf 1
ec2-attach-volume -C cert.pem -K pk.pem --instance B --device /dev/sdf 2
ec2-attach-volume -C cert.pem -K pk.pem --instance C --device /dev/sdf 3

I can do either one or the other with xargs -n 1, but how do I do both?

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