10-25-2010
Quote:
# maximum message size
#O MaxMessageSize=0
The leading hash sign means that the lines are comment lines.
Thus the maximum size of an attachment is "unlimited" (well at least not by sendmail). Many ISPs will not allow a 15 Mb attachment.
The test in your script will obviously only work on a O/S where "ls" displays the file size in bytes.
The test in your script will only work for numbers up to 2147483647 .
((1024 x 1024 x 1024 x 2)) -1) . One byte less than 2 Gb.
This is a restriction on the maximum size of an integer in a Shell variable.
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from(1) General Commands Manual from(1)
NAME
from - Shows whom mail messages are from
SYNOPSIS
from [-s sender] [user]
The from command prints out the mail header lines in your mailbox file.
OPTIONS
Prints headers for mail sent by sender. Specifies a mail spool directory.
Use this flag if you want to examine a mailbox in a directory other than /usr/spool/mail, which is the system default.
DESCRIPTION
If user is specified, then user's mailbox is examined instead of your own.
EXAMPLES
To display the message headings in your mailbox, enter: from
The names of the senders and the message dates are displayed. To display the message headings for mail sent by a specific user,
enter: from -s dale
Displays only the message headings of the messages sent from user dale. To display the message headings in a specific user's mail-
box, enter: from dawn
The message headings from user dawn's mailbox are displayed, provided you have read permission for dawn's mailbox.
FILES
User mailbox files.
SEE ALSO
Commands: biff(1), mail(1), mailx(1)
from(1)