change group name or add to secondary group on the fly

[zxcv]

hi ,

Can i change group of a specific user from one to another on the fly or atleast can i add that user to a secondary group even though he is logged in .

Am using hp ux 11i v2

[Dennis Handly]

You can always directly edit /etc/passwd and /etc/group.

For 11.31, there is a -F option to usermod(1m) to force it, even if in use.

[zxcv]

Hi Dennis ,

When i directly edit /etc/passwd and group am able to view through id command that the group is changed..i.e primary , but still chown needs to be run right ?

I just want to segregate my current 100 users in 4 groups say dc1 dc2 dc3 dc4 ;

its fine if i dont change their primary group , i just want segregation for my admin purpose , how can i achieve it on the fly .

[Dennis Handly]

>but still chown needs to be run right?

Yes, that or chgrp(1).

>I just want to segregate my current 100 users in 4 groups say dc1 dc2 dc3 dc4

You can do a find with "-user user-name":

find path -user user-name -exec chgrp group-name {} +