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Full Discussion: Creating DELTA file in UNIX
Top Forums Shell Programming and Scripting Creating DELTA file in UNIX Post 302413219 by varunrbs on Thursday 15th of April 2010 02:59:28 AM
Old 04-15-2010
Creating DELTA file in UNIX

I have a fixed length file (854 characters file).

Our project will start getting this file soon. On the first day this file will have 100000 records. From the next day the file will have all the records from previous day + some new records (there will be few additions + few changes in day1 file records).

Now from day 2 onwards we want to create delta file from the incoming file. This means we only want records which are changed or are totally new.

We can keep the first day file as shadow file and day 2 onward we can perform a daily activity which compares records in day2 file with day1 file and only additions/modifications are written into new file.

Could someone please suggest how to achieve this in UNIX?

 

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BLOCKDIAG(1)						      General Commands Manual						      BLOCKDIAG(1)

NAME
blockdiag - generate block-diagram image file from spec-text file. SYNOPSIS
blockdiag [options] file DESCRIPTION
This manual page documents briefly the blockdiag commands. blockdiag is a program that generate block-diagram image file from spec-text file. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. For a complete description, see the SEE ALSO. --version show program's version number and exit -h, --help Show summary of options -a, --antialias Pass diagram image to anti-alias filter -c FILE, --config=FILE read configurations from FILE -o FILE write diagram to FILE -f FONT, --font=FONT use FONT to draw diagram --fontmap=FONT use FONTMAP file to draw diagram -s, --separate Separate diagram images for each group -T TYPE Output diagram as TYPE format --nodoctype Do not output doctype definition tags (SVG only) --no-transparency do not make transparent background of diagram (PNG only) SEE ALSO
The programs are documented fully by http://tk0miya.bitbucket.org/blockdiag/build/html/index.html AUTHOR
blockdiag was written by Takeshi Komiya <i.tkomiya@gmail.com> This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others). May 9, 2011 BLOCKDIAG(1)
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