In unix, how can I pipe the output of who into the groups command?
I'm trying to do something like this:
Say there are 4 users logged into a UNIX machine, a, b, c, and d.
Now, to get the groups these guys belong to, I have to type out :
groups a b c d.
What I am wondering, is if there is a way to do something like who | groups where I can pipe the users currently logged-in to the groups command, which would then print out all the users given along with their group information. However, this does not seem to work as intended - rather, the above command just gives the group the first user belongs to.
Copyright License：
Author:「waffles」,Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.
Link to：https://stackoverflow.com/questions/3877831/in-unix-how-can-i-pipe-the-output-of-who-into-the-groups-command
About “In unix, how can I pipe the output of who into the groups command?” questions
I'm trying to do something like this:
Say there are 4 users logged into a UNIX machine, a, b, c, and d.
Now, to get the groups these guys belong to, I have to type out :
groups a b c d.
What I am
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