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"Default" Record Lengths

 
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Old 08-26-2001
Question "Default" Record Lengths
Hello -

QUESTION:
Is there a way to override the default record length limitation over awk in Unix?
Or, is there a better way to do what I am trying to do than the way I am trying to do it now? (See BACKGROUND and CURRENT PROCEDURE below...)

BACKGROUND:
In a Kornshell script, I have to search a file using variable criteria and produce a range of records from within the original input file. I am piping the file from Unix Kornshell commands to an awk procedure. I basically want to extract a range of records out of the original file, based on input criteria.

PROBLEM:
Awk is relaying to me that the record is too long to process.

CURRENT PROCEDURE:
To overcome the length problem, I am "cut"-ting the records as I pipe them to the awk procedure, and that is working OK - - I do get the expected output from the procedure.
But then I have to use a Unix "grep" with the output of the awk procedure against the original file to put the selected records from the file 'back together' with the original. Consequently, the "grep" is taking too long (it is an interactive script).
Is there a better way to do this?
- -
FYI:
The original records are a bit over 7000 bytes in length.
The "cut" records passed to and output from awk are 50 bytes.
- -
Thanks,
Jim
 
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LEARN ABOUT HPUX

script

script(1)						      General Commands Manual							 script(1)

NAME

       script - make typescript of terminal session

SYNOPSIS

       [file]

DESCRIPTION

       makes a typescript of everything printed on your terminal.  It starts a shell named by the environment variable, or by default and silently
       records a copy of output to your terminal from that shell or its descendents, using a pseudo-terminal device (see pty(7)).

       All output is written to file, or appended to file if the option is given.  If no file name is given, the output is saved in a  file  named
       The recording can be sent to a line printer later with lp(1), or reviewed safely with the option of cat(1).

       The  recording  ends when the forked shell exits (or the user ends the session by typing "exit") or the shell and all its descendents close
       the pseudo-terminal device.

       This program is useful when operating a CRT display and a hard-copy record of the dialog is desired.  It can also be used for a simple form
       of session auditing.

       respects  the  convention  for login shells as described in su(1), sh(1), and ksh(1).  Thus, if it is invoked with a command name beginning
       with a hyphen (that is, passes a basename to the shell that is also preceded by a hyphen.

       The input flow control can be enabled by setting environmental variable before running Please see section for details on using  this  envi-
       ronment variable.

EXAMPLES

       Save everything printed on the user's screen into file

       Append a copy of everything printed to the user's screen to file

WARNINGS

       A  command  such as which displays the contents of the destination file, should not be issued while executing because it would cause to log
       the output of the command to itself until all available disk space is filled.  Other commands, such as more(1), can cause the same  problem
       but to a lesser degree.

       records all received output in the file, including typing errors, backspaces, and cursor motions.  Note that it does not record typed char-
       acters; only echoed characters.	Thus passwords are not recorded in the file.  Responses other than simple  echoes  (such  as  output  from
       screen-oriented editors and command editing) are recorded as they appeared in the original session.

       When  there is no input flow control is not set), there can be some data loss while using However, script(1) can behave unexpectedly, if is
       set and is not set.

AUTHOR

       was developed by the University of California, Berkeley and HP.

																	 script(1)