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Full Discussion: Prevent file from being mailed multiple times from a job
Top Forums Shell Programming and Scripting Prevent file from being mailed multiple times from a job Post 302096200 by RTM on Tuesday 14th of November 2006 10:42:21 AM
Old 11-14-2006
You could, when you mail the file, move it to file.old and then in the next run, if there is a file.old, compare it to the new file that is just made. If they are the same, don't mail it. If they are different, add the new changes to the file.old and send/mail the new changes and then move the new one to file.old. This way, you don't lose any info that needs to be corrected, the users will be getting data that is new.

Once you have a run with no changes (zero bytes), you could remove file.old for future runs.
 

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LEARN ABOUT CENTOS

conflict

CONFLICT(8)                                                          [nmh-1.5]                                                         CONFLICT(8)

NAME

       conflict - search for alias/password conflicts

SYNOPSIS

       /usr/lib/mh/conflict [-search directory] [-mail name] [-version] [-help] [aliasfiles ...]

DESCRIPTION

       Conflict is a program that checks to see if the interface between nmh and the transport system is in good shape

       Conflict also checks for maildrops in /var/mail which do not belong to a valid user.  It assumes that no user name will start with `.', and
       thus ignores files in /var/mail which begin with `.'.  It also checks for entries in the group(5) file which do not belong to a valid user,
       and for users who do not have a valid group number.  In addition duplicate users and groups are noted.

       If  the  -mail  name  switch is used, then the results will be sent to the specified name.  Otherwise, the results are sent to the standard
       output.

       The -search directory switch can be used to search directories other than /var/mail and to report  anomalies  in  those  directories.   The
       -search directory switch can appear more than one time in an invocation to conflict.

       Conflict should be run under cron(8), or whenever system accounting takes place.

FILES

       /etc/nmh/mts.conf          nmh mts configuration file
       /etc/passwd                List of users
       /etc/group                 List of groups
       /usr/bin/mh/mhmail         Program to send mail
       /var/mail/                 Directory of mail drop

PROFILE COMPONENTS

       None

SEE ALSO

       mh-alias(5)

DEFAULTS

       `aliasfiles' defaults to /etc/nmh/MailAliases

CONTEXT

       None

MH.6.8                                                             11 June 2012                                                        CONFLICT(8)
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