The /usr/ucb/from UNIX command prints out the mail header lines in your mailbox file. It shows you who the mail is from. Here is an example run for this command.
Display mail header lines in your mailbox file
# /usr/ucb/from
From root Sun Mar 16 03:15:01 2008
From root Sun Mar 23 03:15:00 2008
From root Sun Mar 30 03:15:01 2008
From root Sun Apr 6 03:15:01 2008
From root Sun Apr 13 03:15:01 2008
From esoft Thu May 15 19:50:10 2008
Display mail header for mail sent by sender
# /usr/ucb/from -s esoft
From esoft Thu May 15 19:50:10 2008
Display mail header lines for a user's mailbox file
# /usr/ucb/from soft
From soft Sun Feb 10 03:10:41 2008
From soft Sun Feb 10 03:15:01 2008
From soft Sun Feb 17 03:10:41 2008
From soft Sun Feb 17 03:15:01 2008
From soft Sun Feb 24 03:10:41 2008
2 comments:
Correct me if I'm wrong, but from only works with mbox formatted mailboxes, not maildir (et al.).
I tend to agree Scott. I only tested it against mbox formatted mailboxes.
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