08-18-2017
Please become accustomed to provide decent context info of your problem.
It is always helpful to support a request with system info like OS and shell, related environment (variables, options), preferred tools, adequate (representative) sample input and desired output data and the logics connecting the two, and, if existent, system (error) messages verbatim, to avoid ambiguities and keep people from guessing.
I have extreme difficulties to understand what you're doing / trying up there. You seem to
- mix up shell and awk syntax
- use the dm variable before it is defined
- not pass the variable correctly into the awk script.
Why do you use FOUR commands when the entire logics can be covered in one single only?
Where is the `( substr($11,2,8) -lt $dm )` construct (shell command substitution in its deprecated form) used?
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LEARN ABOUT SUSE
arbitron
ARBITRON(8) System Manager's Manual ARBITRON(8)
*
NAME
arbitron - arbitron mailboxes
SYNOPSIS
arbitron [ -C config-file ] [ -o ] [ -u ] [ -l ] [ -p months ]
[ -d days | -D mmddyyyy[:mmddyyyy] ] mailbox...
DESCRIPTION
Arbitron collects and reports readership statistics for mailboxes on the server. It also optionally prunes the mailboxes of Seen state
for dormant users.
Arbitron produces one line of output per mailbox, reporting the mailbox name followed by a space, followed by the number of readers (and if
-u is specified, followed by a colon and a comma-separated list of the readers userids), and if -o is not specified, another space and the
number of subscribers (and if -u is specified, followed by a colon and a comma-separated list of the subscribers userids). IMPORTANT: This
format is subject to change in future versions.
Each "reader" is a distinct authentication identity which has "s" rights to the mailbox and which has SELECTed the mailbox within either
the past days days or the specified date range. Users are not counted as reading their own personal mailboxes. Personal mailboxes are not
reported unless there is at least one reader other than the mailboxes owner.
Arbitron reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.
OPTIONS
-C config-file
Read configuration options from config-file.
-o "old way" -- do not report subscribers.
-u Report userids in addition to the count(s).
-l Enable long reporting (comma delimited table consisting of mbox, userid, r/s, start time, end time).
-d days
Count as a reader an authentication identity which has SELECTed the mailbox within days days. Default is 30.
-D mmddyyyy[:mmddyyyy]
Count as a reader an authentication identity which has SELECTed the mailbox within the given date range. The start date and
optional end date are specified as 2-digit month of the year, 2-digit day of the month, and 4-digit year. If the end date is not
specified, then the current system time is used as the end time.
-p months
Prune Seen state for users who have not SELECTed the mailbox within months months. Default is infinity.
FILES
/etc/imapd.conf
CMU
Project Cyrus ARBITRON(8)