extracting lines from a file Post: 302231333

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Top Forums UNIX for Dummies Questions & Answers extracting lines from a file Post 302231333 by Sujan Banerjee on Tuesday 2nd of September 2008 06:18:35 AM

09-02-2008

Registered User

Hi TrichySelva,
Sorry for Late response(Actually I joined this forum today itself!!)
To extract line number 5 and 7,use:
bash-2.03# sed -n '5p;7p' cricketnews
5 and if Pakistan, as expected, beat Bangladesh the day after,
7 the virtue of having won more matches in the Super Four stage, Pakistan will go through.

To Extract Say Line 4-6,12-15 and 32 to last,do this:
bash-2.03# sed -n '4,6p;12,15p;32,$p' cricketnews
4 ousted from the event. If India lose to Sri Lanka on Thursday,
5 and if Pakistan, as expected, beat Bangladesh the day after,
6 both teams will be tied on four points. In that scenario, by
12 the CB Series in Australia. Therein lies the story: the CB
13 Series was played in Australia, the Asia Cup is being
14 played in Pakistan. And the Indian bowlers react differently
15 to the two types of conditions.
32 to struggle on pitches that give him zero assistance.
33 Dhoni thought the bowlers gave it their all, but
34 the pitch was just too unresponsive.

To Extract say 25th to 30th(To extract 42nd char-just write 42) char and 34-38char of each of these lines,
bash-2.03# sed -n '4,6p;12,15p;32,$p' cricketnews|cut -c25-30,34-38
eventf Ind
, as ected,
be tion fo
in Auslia.
yed instral
stan. the
es of ditio
pitchthat
the bors ga
just tunres

bash-2.03# sed -n '4,6p;12,15p;32,$p' cricketnews|cut -c42
l
a
p
r

i

e
i
s

Hope it solves ur purpose,though sadly bit too late I believe Smilie

Sujan Banerjee

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libbash

LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME

     libbash -- A bash shared libraries package.

DESCRIPTION

     libbash  is  a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
     want to load and use in scripts of your own.

     It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.

     Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1).  A bash shared library that can be  loaded
     using
     ldbash(1) must answer 4 requirments:

     1.     It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).

     2.     It must contain a line that begins with '#EXPORT='.  That line will contain (after the '=') a list of functions that the library
	    exports.  I.e. all the function that will be usable after loading that library will be listed in that line.

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     4.     The library must be listed (For more information, see ldbashconfig(8)).

   Basic guidelines for writing library of your own:
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     3.     Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
		  __<library_name>_
	    For example, internal function myfoosort of hashstash library should be named as
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	    This helps to avoid conflicts in global name space when using libraries that come from different vendors.

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