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Full Discussion: read inside a while loop
Top Forums UNIX for Dummies Questions & Answers read inside a while loop Post 72539 by zazzybob on Saturday 21st of May 2005 10:53:27 AM
Old 05-21-2005
Rather than wrestling with the shell to do this - make it easy on yourself and use Perl - for example, to only print the line if the user enters a 1....
Code:
#!/usr/bin/perl

open( FOOFILE, "< foofile" );
while( <FOOFILE> ) {
  print( "Enter a number: " );
  chomp( $input = <STDIN> );
  if ( $input == 1 ) {
    print( "You entered a 1 and the line is $_" );
  } else {
    print( "Ooops - not a 1\n" );
  }
}
close( FOOFILE );

Cheers
ZB
 

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LEARN ABOUT SUNOS

lpq

lpq(1B) 					     SunOS/BSD Compatibility Package Commands						   lpq(1B)

NAME

       lpq - display the content of a print queue

SYNOPSIS

       /usr/ucb/lpq [-P destination] [-l] [ + [interval]] [ request-ID...] [user...]

DESCRIPTION

       The lpq utility displays the information about the contents of a print queue. A print queue is comprised of print requests that are waiting
       in the process of being printed.

       lpq displays the following information to the standard output:

	 o  the username of the person associated with a print request,

	 o  the position of a print request in the print queue,

	 o  the name of file or files comprising a print request,

	 o  the job number of a print request, and

	 o  the size of the file requested by a print request. File size is reported in bytes.

       Normally, only as much information as will fit on one line is displayed. If the name of the input file associated with a print  request	is
       not available, the input file field indicates the standard input.

       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.

OPTIONS

       The following options are supported:

       -P destination  Displays information about printer or class of printers (see lpadmin(1M)) . Specify destination using atomic or POSIX-style
		       (server:destination)  names.  See  printers.conf(4)  for  information regarding the naming conventions for atomic names and
		       standards(5) for information regarding POSIX.

       -l	       Displays information in long format. Long format includes the name of the host from which a print request originated in the
		       display.

       + [interval]    Displays  information  at  specific  time intervals. Stops displaying information when the print queue is empty. Clears the
		       screen before reporting displaying the print queue. Specify interval as the number of seconds between displays. If   inter-
		       val is not specified only executes once.

OPERANDS

       The following operands are supported:

       request-ID      The job number associated with a print request.

       user	       The name of the user about whose jobs  lpq reports information. Specify user as a valid username.

EXIT STATUS

       The following exit values are returned:

       0	       Successful completion.

       non-zero        An error occurred.

FILES

       /var/spool/print/[cd]f*		       Spooling directory and request files for jobs awaiting transfer.

       /var/spool/lp/*			       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

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscplp 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

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

SunOS 5.10							    23 May 2003 							   lpq(1B)
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