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Full Discussion: How to copy only some lines from very big file?
Top Forums UNIX for Beginners Questions & Answers How to copy only some lines from very big file? Post 302965774 by vidyadhar85 on Tuesday 2nd of February 2016 11:59:08 PM
Old 02-03-2016
If you have latest grep you have below options in grep
Context Line Control
Quote:
-A NUM, --after-context=NUM
Print NUM lines of trailing context after matching lines. Places a line containing a group separator (--) between contiguous
groups of matches. With the -o or --only-matching option, this has no effect and a warning is given.
-B NUM, --before-context=NUM
Print NUM lines of leading context before matching lines. Places a line containing a group separator (--) between contiguous
groups of matches. With the -o or --only-matching option, this has no effect and a warning is given.
-C NUM, -NUM, --context=NUM
Print NUM lines of output context. Places a line containing a group separator (--) between contiguous groups of matches. With
the -o or --only-matching option, this has no effect and a warning is given.
or you can use awk


awk 'c-->0;/pattern/{c=98}' Infile
This User Gave Thanks to vidyadhar85 For This Post:
phamnu
 

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LEARN ABOUT DEBIAN

oggz-diff

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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