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Full Discussion: Unix mail command internals
Top Forums UNIX for Dummies Questions & Answers Unix mail command internals Post 302555746 by anindyabecs on Thursday 15th of September 2011 12:55:13 PM
Old 09-15-2011
Thanks a lot Corona688 for the info .. Really helpful , can you refer me some links or books if possible about the same, in case you know some..
 

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from(1B)					     SunOS/BSD Compatibility Package Commands						  from(1B)

NAME
from - display the sender and date of newly-arrived mail messages SYNOPSIS
/usr/ucb/from [-s sender] [username] DESCRIPTION
The from utility prints out the mail header lines in your mailbox file to show you who your mail is from. If username is specified, user- name's mailbox is examined instead of your own. OPTIONS
The following option is supported: -s sender Only display headers for mail sent by sender. USAGE
See largefile(5) for the description of the behavior of from when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). FILES
/var/mail/* ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
biff(1B), mail(1B), attributes(5), largefile(5) SunOS 5.11 28 Jan 2004 from(1B)
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