How to use sed to search a particular pattern in a file backward after a pattern is matched.? Post: 302833627

Sponsored Content

Top Forums Shell Programming and Scripting How to use sed to search a particular pattern in a file backward after a pattern is matched.? Post 302833627 by saurabh kumar on Wednesday 17th of July 2013 01:44:17 PM

07-17-2013

Registered User

How to use sed to search a particular pattern in a file backward after a pattern is matched.?

Hi,
I have two files file1.txt and file2.txt. Please see the attachments.

In file2.txt (which actually is a diff output between two versions of file1.txt.), I extract the pattern corresponding to 1172c1172. Now ,In file1.txt I have to search for this pattern 1172c1172 and if found, I have to search backward for the path and print the corresponding path (/home/saurabh/file1.txt). Please note that there may be many entries between the path(/home/saurabh/file1.txt) and the line containing the pattern 1172c1172.

file1.txt:

Code:

/home/saurabh/file7.txt
117c117
<          
---
>          

/home/saurabh/file1.txt
76c76
---
79c79
---
1172c1172
<          apple, banana, orange
---
>          apple, banana, mango

/home/saurabh/file7.txt
117c117
<   	silent, helpful       
---
>  	silent

file2.txt:

Code:

2388,2391d2387
< 1172c1172
< <          apple, banana, orange
< ---
< >          apple, banana, mango

Any suggestions will be highly appreciated.

Thanks,
Saurabh

Last edited by Scott; 07-17-2013 at 02:58 PM.. Reason: Removed attachments. It's really not necessary to attach such small files

saurabh kumar

View Public Profile for saurabh kumar

Find all posts by saurabh kumar

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

appending with sed based on matched pattern

Hi, I want to know if you can input with sed but instead of specifing a line number like below I wan't to be able to insert based on a specific word or patttern. 10i\ Insert me after line 10 is this possible with sed or should I use AWK? Thanks Jack

2. Shell Programming and Scripting

SED Search Pattern and Replace with the Pattern

Hello All, I have a string "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031", and I just want to extract LLSV1, but I dont get the expected result when using the sed command below. # echo "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031" | awk '{print...

3. Shell Programming and Scripting

SED: delete and print the only exact matched pattern

I am really need help with the regular expression in SED. From input file, I need to extract lines that have the port number (sport or dport) as defined. The input file is something like this time=1209515280-1209515340 dst=192.168.133.202 src=208.70.8.23 bytes=2472 proto=6 sport=80 dport=1447...

4. Shell Programming and Scripting

search for the matched pattern by tracing back from the line

Hi, I want to grep the line which has 'data11'.then from that line, i need to trace back and find out the immediate line which has the same timestamp of that grepped line. for eg: log file: ----------- Process - data Process - datavalue - 2345 Process - data Process - data Process...

5. Shell Programming and Scripting

extracting matched pattern from a line using sed

I am trying to pull certain pieces of data out of a line of a file that matches a certain pattern: The three pieces that I want to pull out of this line are the only occurrences of that pattern within the line, but the rest of the line is not consistent in each file. Basically the line is...

6. Shell Programming and Scripting

Search pattern within file using sed..

Hi, Could someone help me in figuring out a way using which i can search for a specific pattern. Eg. JUSTDOIT..I have to print just the word "DO" from "JUSTDOIT" If the same word JUSTDOIT is print n number of times

7. Shell Programming and Scripting

Search for a pattern in a String file and count the occurance of each pattern

I am trying to search a file for a patterns ERR- in a file and return a count for each of the error reported Input file is a free flowing file without any format example of output ERR-00001=5 .... ERR-01010=10 ..... ERR-99999=10

8. Shell Programming and Scripting

Insert certain field of matched pattern line above pattern

Hello every, I am stuck in a problem. I have file like this. I want to add the fifth field of the match pattern line above the lines starting with "# @D". The delimiter is "|" eg > # @D0.00016870300|0.05501020000|12876|12934|3||Qp||Pleistocene||"3 Qp Pleistocene"|Q # @P...

9. Shell Programming and Scripting

Search for Pattern as output between the matched String

Hello, I have a file which has the below contents : VG_name LV_name LV_size in MB LV_option LV_mountpoint owner group y testdg rahul2lv 10 "-A y -L" /home/abc2 ...

10. UNIX for Beginners Questions & Answers

Search a string inside a pattern matched block of a file

How to grep for searching a string within a begin and end pattern of a file. Sent from my Redmi 3S using Tapatalk

LEARN ABOUT LINUX

xzdiff

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and xzdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp(1) or diff(1).  If only one file is specified, then the files compared are file1 (which must have a suffix of  a  supported
       compression format) and file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp(1) or diff(1) is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2010-09-27								 XZDIFF(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

appending with sed based on matched pattern

Discussion started by: jack1981

2. Shell Programming and Scripting

SED Search Pattern and Replace with the Pattern

Discussion started by: racbern

3. Shell Programming and Scripting

SED: delete and print the only exact matched pattern

Discussion started by: new_buddy

4. Shell Programming and Scripting

search for the matched pattern by tracing back from the line

Discussion started by: Sharmila_P