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Top Forums Shell Programming and Scripting Reading from a specific line in a loop Post 302217720 by BMDan on Wednesday 23rd of July 2008 11:20:09 AM
Old 07-23-2008
What you're trying to do is either a homework problem, or else so terribly-defined as to defy any hope of getting a productive answer.

Let's examine the possibilities:
1) Your listed files are the extent of the data: Seriously? You're worried about performance when comparing four entries to four other entries?
2) Your listed files aren't the full extent of the data: You're worried about performance, but you're doing this as a shell script?
3) You're doing line-by-line comparisons: diff
4) You're looking for an entry in one file that doesn't exist in the other: sort | uniq | diff
etc., etc.

Please go into more detail about what you want and we'll be happy to assist, but your current post is doing neither you nor us any good. Lastly, a point of etiquette: "Request you to let me know how to do the below urgently.." is not useful. Unless you're paying for advice, you don't get to set the timetable.
 

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oggz-diff(1)						      General Commands Manual						      oggz-diff(1)

NAME
oggz-diff -- Hexdump the packets of two Ogg files and output differences SYNOPSIS
oggz-diff [options] [OGGZDUMP_OPTIONS] [DIFF_OPTIONS] file1.ogg file2.ogg options: [--verbose ] [-v | --version ] [-h | --help ] OGGZDUMP_OPTIONS: [-b | --binary ] [-x | --hexadecimal ] [-c content-type | --content-type content-type ] [-s serialno | --serialno serialno ] [-O | --hide-offset ] [-S | --hide-serialno ] [-G | --hide-granulepos ] [-P | --hide-packetno ] DIFF_OPTIONS: [-q | --brief ] [-C NUM | --context[=NUM] ] [-u | -U NUM | --unified[=NUM] ] [-e | --ed ] [--normal ] [--rcs ] [-y | --side-by-side ] [-l | --paginate ] Description oggz-diff is a sh script which uses oggz-dump to generate hexadecimal packet dumps of each input file, then outputs the difference between these dumps using diff. Options oggz-diff forwards a subset of options accepted by oggz-dump and diff. See oggz-dump(1) and diff(1) for more detail. oggz-dump format options -b, --binary Generate a binary dump of each packet -x, --hexadeciaml Generate a hexadecimal dump of each packet oggz-dump filtering options -c content-type, --content-type content-type Dump only the logical bitstreams for a specific content-type. Run oggz-known-codecs(1) for a full list of codecs known by the installed version of oggz. -s serialno, --serialno serialno Dump only the logical bitstream with specified serialno. -O, --hide-offset Hide the byte offset field of the preamble for each packet dumped. This is particularly useful when comparing Ogg bitstreams that differ only in page structure. -S, --hide-serialno Hide the serialno field of the preamble for each packet dumped. This is particularly useful when comparing Ogg bitstreams that differ only in serialno assignment. -G, --hide-granulepos Hide the granulepos field of the preamble for each packet dumped. -P, --hide-packetno Hide the packetno field of the preamble for each packet dumped. diff options The -w (--ignore-all-space) option to diff is always implied. -q, --brief Output only whether files differ. -C NUM, --context[=NUM] Output NUM lines of copied context. -u, -U NUM, --unified[=NUM] Output NUM (default 3) lines of unified context. -e, --ed Output an ed script. --normal Output a normal diff. --rcs Output an RCS format diff. -y, --side-by-side Output in two columns. -l, --paginate Pass the output through pr to paginate it. Miscellaneous options --verbose Display verbose messages. -v, --version Display version information and exit. -h, --help Display usage information and exit. AUTHOR
Conrad Parker COPYRIGHT
Copyright (C) 2003 CSIRO Australia SEE ALSO
oggz-dump(1), diff(1), patch(1) oggz-diff(1)
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