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Full Discussion: Unix Program for data and print
Top Forums UNIX for Advanced & Expert Users Unix Program for data and print Post 17299 by AtleRamsli on Wednesday 13th of March 2002 08:12:21 AM
Old 03-13-2002
I think we lost miketaylor here, this post has been up for a while.
When I responded to it, I assumed a delimited data file to be an ASCII file where the 'delimiter' signified end-of-field, and where newline signified end-of-record, these things are very common in the DOS world, but not unseen in our world, either :-)
Comma-delimited qouted strings (typical export file)

"Hacker","A.Genius","Main St.","Unic City","41"
"Hacker","J. Random","Back St. 2","Dosburg","69"
"Hacker","N.A","","Weirdlayout"

Here is a colon-delimited data file

nobody:x:60001:60001:Nobody:/:
fbsdd00d:x:500:500:Admin:/home/fbsdd00d:/bin/sh

So, the program would typically read one line at a time, filling in a struct each time, and calling some program.

This can also be used for very evil things, like
spamming, but that was not what the OP wanted to do, I just show it to show off my newly aquired Perl-newbie status and possible faulty understanding or the problem.
Code:
#!/usr/bin/perl
$FIL = "/etc/passwd"
open FIL or die "Try that again and you die 4 real";
# Write a nice letter to each member
# of mailing list
while(<FIL>) {
	@Line = colon-delimited-list
	printf("Dear %s!\n", @Line[4]);
	printf("You were referred to me by your /etc/passwd file ...");
	...
}
close(FIL);

Atle

added code tags for readability --oombera
Last edited by oombera; 02-20-2004 at 02:17 PM..
 

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LEARN ABOUT REDHAT

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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