Grep for the second occurence in the file

[rick01]

Hi All i have a text in a file i have to grep for the second occurencre (DESCRIPTION) of the file and and append to a file

can you please help

DESCRIPTION
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors.

DESCRIPTION
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors.

[watael]

hi,

I suppose you also want the text below the pattern, right?

then, grep wil not help, but sed will!

[covidium]

Hi, do you know if your description is in one line?

[rick01]

Yes i want to grep the below text after the DESCRIPTION to the last line "editors." yes it sin the same file

[rick01]

No its not in one line

Example : DESCRIPTION Sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline).While in some ways similar to an editor which permits

DESCRIPTION sed works by making only one pass over the input(s), andis consequently more efficient. But it is sedās ability to filter text in a pipeline

[mactruck]

Im not sure if I understand this correctly or not. But I think this might work;

grep -v ^DESCRIPTION

[watael]

did some search about "sed print last occurrence" and get an answer:

$ cat UrFile
DESCRIPTION
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors.

DESCRIPTION last
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors. 
$ sed -n 'H; /^DESCRIPTION/h; ${g;p;}' UrFile
DESCRIPTION last
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors.

[covidium]

hi again, try this:

awk '/DESCRIPTION/{n++}{print >"output" n ".txt" }' YOURFILE

this will generate a file for each description that will find untill the next pattern will be found, so if you have

$: cat YOURFILE
DESCRIPTION
This
is
a
nice
description

DESCRIPTION
Indeed
a
nice
row
here

when you will execute the command you will get

output1.txt with

DESCRIPTION
This
is
a
nice
description

and output2.txt with

DESCRIPTION
Indeed
a
nice
row
here

Hope this help

[rick01]

Thank you Watale & covidium for getting me what i was looking for . Thanks a lot for your help

How can i grep until gawk

suppose from the below file output.xt

DESCRIPTION last
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors. 


gawk - pattern scanning and processing language

DESCRIPTION
       Gawk  is  the  GNU Projectās implementation of the AWK programming lan-
       guage.  It conforms to the definition of  the  language  in  the  POSIX
       1003.2  Command  Language And Utilities Standard.  This version in turn
       is based on the description in The AWK Programming  Language,  by  Aho,
       Kernighan,  and  Weinberger,  with the additional features found in the
       System V Release 4 version of UNIX awk.  Gawk also provides more recent
       Bell  Laboratories  awk extensions, and a number of GNU-specific exten-
       sions.

Desired o/p :

DESCRIPTION last
Sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a pipeline).
While in some ways similar to an editor which permits scripted edits
(such as ed), sed works by making only one pass over the input(s), and
is consequently more efficient. But it is sedās ability to filter text
in a pipeline which particularly distinguishes it from other types of
editors.

[atreyu]

Hello and welcome!

You can use awk's range operators, which are basically two regexps. Here is an example:

cat output.txt|awk '/DESCRIPTION last/,/gawk/'

If your text really does not have the "last" in "DESCRIPTION last", then we might have to get trickier...