How to change GECOS name in mail sender address?

Solution Verified - Updated -

Issue

The content of the GEC0S filed gets written into the sender address.

An example:

user@hostname:~$ grep oracle /etc/passwd
oracle:x:1222:200:Oracle Owner:/home/oracle:/bin/bash

oracle@hostname:~$ echo Hello | mail -s test recipient@domain.com

I get the header:

From: Oracle Owner <oracle@hostname>

How to rewrite the realname (in this example "Oracle Owner") from the GEC0S field ?

Environment

  • Red Hat Enterprise Linux (RHEL) 4, 5, or 6

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