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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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script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.10 30 Jan 2004 script(1)

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