bsd-from (1) - Linux Manuals
bsd-from: print names of those who have sent mail
NAME
from - print names of those who have sent mail
SYNOPSIS
[-c ] [-f file ] [-s sender ] [user ]DESCRIPTION
The utility prints out the mail header lines from the invoker's mailbox.The following options are available:
- -c
 - Just print a count of messages and exit.
 - -f file
 - The supplied file is examined instead of the invoker's mailbox. If the -f option is used, the user argument should not be used. Read from standard input if file name ``- '' is given.
 - -s sender
 - Only mail from addresses containing the supplied string are printed.
 
If user is given, the user 's mailbox is examined instead of the invoker's own mailbox. (Privileges are required.)
ENVIRONMENT
- If set, the location of the invoker's mailbox. Otherwise, the default in /var/mail is used.
 
FILES
- /var/mail/*
 
HISTORY
The command appeared in BSD 3.0