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Full Discussion: How to edit a large file
Top Forums Shell Programming and Scripting How to edit a large file Post 302582249 by methyl on Thursday 15th of December 2011 08:21:38 AM
Old 12-15-2011
Well we've reached post #10 and we know that the file is over 7Gb and you want to edit it. We know nothing about the file itself, but other posters have suggested unix text file editing techniques. Is it a unix text format file with manageable record length?

Have you edited similar (but smaller) files in the same format? If so, what did you do?

Please post what Operating System and version you have.
Please describe the process or program which wrote this file (mentioning programming language or database engine if relevant).
 

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edit-pr(1)						       GNATS User Utilities							edit-pr(1)

NAME
edit-pr - edit a problem report in the GNATS database SYNOPSIS
edit-pr [ -h | --help ] [ -V | --version ] [ -d databasename | --database=databasename ] [ -H host | --host=host ] [ -P port | --port=port ] [ -v user | --user=user ] [ -w password | --passwd=password ] PR DESCRIPTION
edit-pr is used to make changes to existing PRs in a GNATS database. edit-pr first examines the PR and locks it if it is not already locked. This is to prevent a PR from being edited by two users simultane- ously. If the PR is already in the process of being edited, edit-pr displays the name of the person who owns the lock. edit-pr then calls $EDITOR on PR. After the PR has been edited, it is resubmitted to the database, and the index is updated. If you change a field that requires a reason for the change, edit-pr prompts you to supply a reason for the change. A message is then ap- pended to the Audit-Trail field of PR with the changed values and the change reason. Depending on how the database is configured, editing various fields in the PR may also cause mail to be sent concerning these changes. In the default configuration, any fields that generate Audit-Trail entries will cause a copy of the new Audit-Trail message to be sent. OPTIONS
-h, --help Prints a brief usage message for edit-pr. -V, --version Prints the version number for edit-pr. -d, --database Specifies the database containing the PR to be edited; if no database is specified, the database named default is assumed. This option overrides the database specified in the GNATSDB environment variable. GNATS network options: -H, --host Hostname of the GNATS server. -P, --port The port that the GNATS server runs on. -v, --username Username used to log into the GNATS server. -w, --passwd Password used to log into the GNATS server. ENVIRONMENT VARIABLES
The environment variable EDITOR specifies the editor to invoke on the PR. Default is vi(1). The GNATSDB environment variable is used to determine which database to use. For a local database, it contains the name of the database to access. For network access via gnatsd, it contains a colon-separated list of strings that describe the remote database, in the form server:port:databasename:username:password Any of the fields may be omitted, but at least one colon must appear; otherwise, the value is assumed to be the name of a local database. If GNATSDB is not set, it is assumed that the database is local and that its name is default. FILES
/tmp/ep$$ Temporary file for PR being edited. /tmp/ed_pr_ch$$ Holds Audit-Trail change message, if needed. /tmp/u$$ Holds output of lock function. SEE ALSO
Keeping Track: Managing Messages With GNATS (also installed as the GNU Info file gnats.info) databases(5), dbconfig(5), delete-pr(8), edit-pr(1) file-pr(8), gen-index(8), gnats(7), gnatsd(8), mkcat(8), mkdb(8), pr-edit(8), query- pr(1), queue-pr(8), send-pr(1). COPYING
Copyright (c) 1993, 2003, Free Software Foundation, Inc. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be included in translations approved by the Free Software Foundation instead of in the original English. GNATS
August 2003 edit-pr(1)
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