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Did you know about finger and its accompanying program chfn? It feels like a relic from a different time.

Usage:
 chfn [options] [<username>]

Change your finger information.

Options:
 -f, --full-name <full-name>  real name
 -o, --office <office>        office number
 -p, --office-phone <phone>   office phone number
 -h, --home-phone <phone>     home phone number

 -u, --help                   display this help
 -V, --version                display version

For more details see chfn(1).