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Full Discussion: Required help on a Generic File-watcher script
Top Forums Shell Programming and Scripting Required help on a Generic File-watcher script Post 302968648 by jgt on Saturday 12th of March 2016 09:33:39 AM
Old 03-12-2016
I would approach the problem differently.
If you have control of the sending process then, have the sender put the data file in the temp directory, then put a job file in the requests directory.
The job file contains the instructions for what to do with the data file.
The job file extension is used to create separate job streams, in our instance priority.
This entire process is run as a cron job with whatever frequency you choose. We found that a long running process is too fragile, and you don't find out is not running or is hung up on something until an angry user arrives.
If you cannot have two files sent, then use 'fuser' to determine if the file is still in the process of being received, and if it is still in use, bypass it until the next iteration.

Code:
#!/bin/ksh                                                                      
PATH=/bin:/usr/bin:/usr/lib                                                     
BATCH=$1                                                                        
proc=$$                                                                         
if [ -r /u/email/$BATCH.pid ]                                                   
then                                                                            
        echo Previous job `cat /u/email/$BATCH.pid` is still running            
        exit                                                                    
fi                                                                              
echo $proc >/u/email/$BATCH.pid                                                 
cd /u/email                                                                     
list=`ls requests|grep $BATCH`                                                  
if [ "$list" != "" ]                                                            
        then                                                                    
        for request in $list                                                    
        do                                                                      
        fuser $request                                                          
        if [ $? != 0 ]                                                          
          then                                                                  
          req=`echo $request|cut -d"." -f1`                                     
          export req                                                            
          IFS="~"                                                               
          #cat requests/$request |read user email from subject memo attachments 
          cat requests/$request | read  user destination                        
          
          IFS=" "                                                               
          cd /u/email/temp                                                      
          #php emailstub.php $user $email "$subject" $memo $attachments         
          #or in your instance scp $req* $user@destination:/incoming            
          cd /u/email                                                           
          mv /u/email/temp/$req* done                                           
          mv /u/email/requests/$request done                                    
        fi                                                                      
        sleep 10                                                                
        done                                                                    
fi                                                                              
rm /u/email/$BATCH.pid

 

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LEARN ABOUT SUNOS

cancel

cancel(1)																 cancel(1)

NAME

       cancel - cancel print request

SYNOPSIS

       cancel [ request-ID...] [destination...]

       cancel -u user... [destination...]

       The cancel utility cancels print requests. There are two forms of the cancel command.

       The first form of cancel has two optional arguments: print requests (request-ID) and destinations (destination). Specifying request-ID with
       destination cancels request-ID on destination. Specifying only the destination cancels the current print request on destination. If  desti-
       nation is not specified, cancel cancels the requested print request on all destinations.

       The second form of cancel cancels a user's print requests on specific destinations.

       Users  can  only  cancel  print	requests associated with their username. By default, users can only cancel print requests on the host from
       which the print request was submitted. If a super-user has set user-equivalence=true in /etc/printers.conf on the print server,	users  can
       cancel  print  requests	associated with their username on any host. Super-users can cancel print requests on the host from which the print
       request was submitted. Superusers can also cancel print requests from the print server.

       The print client commands locate destination information using the printers database in the  name  service  switch.  See  nsswitch.conf(4),
       printers(4), and printers.conf(4) for details.

       The following options are supported:

       -u user	       The name of the user for which print requests are to be cancelled. Specify user as a username.

       The following operands are supported:

       destination     The  destination  on which the print requests are to be canceled. destination is the name of a printer or class of printers
		       (see lpadmin(1M)). If destination is not specified, cancel cancels the requested print request on all destinations. Specify
		       destination  using atomic or POSIX-style (server:destination), names. See  for information regarding using POSIX-style des-
		       tination names with cancel. See standards(5) for information regarding POSIX.

       request-ID      The print request to be canceled. Specify request-ID using LP-style request IDs (destination-number).

       user	       The name of the user for which the print requests are to be cancelled. Specify user as a username.

       The following exit values are returned:

       0	       Successful completion.

       non-zero        An error occurred.

       /var/spool/print/*      LP print queue.

       $HOME/.printers	       User-configurable printer database.

       /etc/printers.conf      System printer configuration database.

       printers.conf.byname    NIS version of /etc/printers.conf.

       printers.org_dir        NIS+ version of /etc/printers.conf.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWpcu			   |
       +-----------------------------+-----------------------------+

       lp(1), lpq(1B), lpr(1B), lprm(1B), lpstat(1), lpadmin( 1M), nsswitch.conf(4), printers(4), printers.conf(4), attributes(5), standards(5)

       POSIX-style destination names (server:destination) are treated as print requests if destination has the same format as an LP-style request-
       ID. See standards(5).

       Some  print  servers send cancelation notification to job owners when their print jobs have been cancelled. This notification usually comes
       in the form of an email message. Cancelation notices cannot be disabled on a Solaris server.

								    23 Feb 2005 							 cancel(1)
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