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Top Forums UNIX for Dummies Questions & Answers Filtering data -extracting specific lines Post 302641727 by drl on Wednesday 16th of May 2012 12:39:22 PM
Old 05-16-2012
Hi.

Meta-solution:
Code:
To obtain the best answers quickly for processing datasets --
extracting, transforming, filtering, you should, after having
searched for answers (man pages, Google, etc.):

1. Post representative samples of your data (i.e.  data that
should "succeed" and data that should "fail")

2. Post what you expect the results to be, in addition to
describing them.  Be clear about how the results are to be
obtained, e.g.  "add field 2 from file1 to field 3 from file2",
"delete all lines that contain 'possum', etc. 

3. Post what you have attempted to do so far.  Post scripts,
programs, etc.  within CODE tags.  If you have a specific
question about an error, please post the shortest example of the
code, script, etc. that exhibits the problem. 

4. Place the data and expected output within CODE tags, so that
they are more easily readable. 

5. If you require the use of a specific shell or command,
explain why that is the case: if you cannot solve a problem, it
may be because you do not know about or enough about a software
tool, in which case the responders are probably better judges of
a solution than you are. 

Special cases, exceptions, etc., are very important to include
in the samples.

Best wishes ... cheers, drl
 

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fmt(1)								   User Commands							    fmt(1)

NAME
fmt - simple text formatters SYNOPSIS
fmt [-cs] [-w width | -width] [inputfile]... DESCRIPTION
fmt is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the -w width option. The default width is 72. fmt concatenates the inputfiles listed as arguments. If none are given, fmt formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. fmt does not fill nor split lines beginning with a `.' (dot), for compatibility with nroff(1). Nor does it fill or split a set of contiguous non-blank lines which is determined to be a mail header, the first line of which must begin with "From". Indentation is preserved in the output, and input lines with differing indentation are not joined (unless -c is used). fmt can also be used as an in-line text filter for vi(1). The vi command: !}fmt reformats the text between the cursor location and the end of the paragraph. OPTIONS
-c Crown margin mode. Preserve the indentation of the first two lines within a paragraph, and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. -s Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such for- matted text, from being unduly combined. -w width | -width Fill output lines to up to width columns. OPERANDS
inputfile Input file. ENVIRONMENT VARIABLES
See environ(5) for a description of the LC_CTYPE environment variable that affects the execution of fmt. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
nroff(1), vi(1), attributes(5), environ(5) NOTES
The -width option is acceptable for BSD compatibility, but it may go away in future releases. SunOS 5.11 9 May 1997 fmt(1)
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