shell - In unix, how can I pipe the output of who into the groups command? -

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i'm trying this:

say there 4 users logged unix machine, a, b, c, , d.

now, groups these guys belong to, have type out :

groups b c d.

what wondering, if there way who | groups can pipe users logged-in groups command, print out users given along group information. however, not seem work intended - rather, above command gives group first user belongs to.

in bash, zsh, , others:

groups $(who | cut -d' ' -f 1)

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