01-14-2011
Find line number of bad data in large file
Hi Forum.
I was trying to search the following scenario on the forum but was not able to.
Let's say that I have a very large file that has some bad data in it (for ex: 0.0015 in the 12th column) and I would like to find the line number and remove that particular line.
What's the easiest way to do so?
For a smaller file, I could use the "vi editor", edit the file, search for the bad data in the specific column and then just delete the row.
But for a larger file where using the "vi editor" is out of the question.
Cannot really use the grep -v "0.0015" option since "0.0015" value could be valid for other rows and which is not in the 12th column.
I do not know what is the line number where the bad data resides.
Thanks.
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RNANO(1) General Commands Manual RNANO(1)
NAME
rnano - Restricted mode for Nano's ANOther editor, an enhanced free Pico clone
SYNOPSIS
rnano [OPTIONS] [[+LINE,COLUMN] FILE]...
DESCRIPTION
This manual page briefly documents the rnano command.
nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than
just copying Pico's look and feel, nano also implements some missing (or disabled by default) features in Pico, such as "search and
replace" and "go to line and column number".
rnano is a restricted version of nano, which only edits specific files and doesn't allow the user access to the filesystem or a command
shell.
In restricted mode, nano will not:
o read or write to any file not specified on the command line;
o read any nanorc files;
o allow suspending;
o allow a file to be appended to, prepended to, or saved under a different name;
o use backup files or spell checking.
OPTIONS
+LINE,COLUMN
Places cursor at line number LINE and column number COLUMN (at least one of which must be specified) on startup, instead of the
default of line 1, column 1.
-? Same as -h (--help).
-h (--help)
Show a summary of command line options and exit.
-V (--version)
Show the current version number and exit.
See the nano(1) manpage for the complete documentation of nano.
BUGS
Please send any comments or bug reports to nano@nano-editor.org.
The nano mailing list is available from nano-devel@gnu.org.
To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe".
HOMEPAGE
http://www.nano-editor.org/
AUTHOR
Chris Allegretta <chrisa@asty.org>, et al (see AUTHORS for details). This manual page was originally written by Thijs Kinkhorst
<thijs@kinkhorst.com>, for the Debian system (but may be used by others).
August 23, 2007 version 2.0.0 RNANO(1)