Sponsored Content
Top Forums UNIX for Dummies Questions & Answers modify a particular pattern starting from second line of the search pattern Post 302246041 by imas on Sunday 12th of October 2008 12:30:28 PM
Old 10-12-2008
modify a particular pattern starting from second line of the search pattern

Hi,

I think you ppl did not get my question correctly, let me explain

I have 1.txt with following entries as shown:

0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
**
**
**

In file 2.txt I have the following entries as shown:

0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
0789456|332211|10.20.30.40|078945633
1234567|225522|10.20.30.50|123456733
0321654|999999|10.20.30.40|032165433
0456123|777899|10.20.30.40|045612333
***
***
***

I want take the IP Address column from 1.txt and then search it in 2.txt and comment the duplicate entry from second matched pattern.

i.e., i need to have the following output in 2.txt as shown:

0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
#0789456|332211|10.20.30.40|078945633
#1234567|225522|10.20.30.50|123456733
#0321654|999999|10.20.30.40|032165433
#0456123|777899|10.20.30.40|045612333
***
***
***

Below is the script i wrote but it will comment all the duplicate entries:

for i in `cat 1.txt |cut -d"|" -f3`
do
cat 2.txt |sed "s/^\(.*\|$i\|.*)/#/g" > tmp.txt
mv tmp.txt 2.txt
done

Can some one guide me how to leave the first duplicate entry untouched and comment from second duplicate entry and so on.

Please do not close this thread if you do not know the answer.

Thanks
-Imas
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

modify a particular pattern starting from second line of the search pattern

Hi, I am new to this forum and i would like to get help in this issue. I have a file 1.txt as shown: apple banana orange apple grapes banana orange grapes orange .... Now i would like to search for pattern say apple or orange and then put a # at the beginning of the pattern... (2 Replies)
Discussion started by: imas
2 Replies

2. Shell Programming and Scripting

comment/delete a particular pattern starting from second line of the matching pattern

Hi, I have file 1.txt with following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433 ** ** ** In file 2.txt I have the following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433... (4 Replies)
Discussion started by: imas
4 Replies

3. Shell Programming and Scripting

search a pattern and if pattern found insert new pattern at the begining

I am trying to do some thing like this .. In a file , if pattern found insert new pattern at the begining of the line containing the pattern. example: in a file I have this. gtrow0unit1/gctunit_crrownorth_stage5_outnet_feedthru_pin if i find feedthru_pin want to insert !! at the... (7 Replies)
Discussion started by: pitagi
7 Replies

4. Shell Programming and Scripting

How to use sed to modify a line above or below matching pattern?

I couldn't figure out how to use sed or any other shell to do the following. Can anyone help? Thanks. If seeing a string (e.g., TODAY) in the line, replace a string in the line above (e.g, replace "Raining" with "Sunny") and replace a string in the line below (e.g., replace "Reading" with... (7 Replies)
Discussion started by: sprinner
7 Replies

5. Shell Programming and Scripting

How to search pattern and add that pattern in next line

Hi All, I am new to shell scripting and need help in scripting using CSH. Here is what I am trying to so, 1. Search a specific string e.g. "task" from "task (input1, out1)". 2. Extract the arguements "input1" and "out1" 3. Add them in separate lines below. eg. "int input1" , " integer out1" ... (7 Replies)
Discussion started by: deshiashish
7 Replies

6. Shell Programming and Scripting

Search a pattern in a line and remove another pattern

Hi, I want to search a pattern in a text file and remove another pattern in that file. my text file look like this 0.000000 1.970000 F 303 - 1.970000 2.080000 VH VH + 2.080000 2.250000 VH VH + 2.250000 2.330000 VH L - 2.330000 2.360000 F H + 2.360000 2.410000 L VL - 2.410000 ... (6 Replies)
Discussion started by: sreejithalokkan
6 Replies

7. Shell Programming and Scripting

Remove duplicate line starting with a pattern

HI, I have the below input file /* ----------------- cmdsDlyStartFWJ -----------------*/ UNIX_JOB CMDS065J RUN ANY CMDNAME sleep 5 AGENT CMDSHP USER proddata RUN MON,TUE,WED,THU,FRI DELAYSUB 02:00 /* "Triggers daily file watcher jobs" */ ENVAR... (5 Replies)
Discussion started by: varun22486
5 Replies

8. UNIX for Dummies Questions & Answers

Grep -v lines starting with pattern 1 and not matching pattern 2

Hi all! Thanks for taking the time to view this! I want to grep out all lines of a file that starts with pattern 1 but also does not match with the second pattern. Example: Drink a soda Eat a banana Eat multiple bananas Drink an apple juice Eat an apple Eat multiple apples I... (8 Replies)
Discussion started by: demmel
8 Replies

9. Shell Programming and Scripting

Pattern search and modify the values

I have one file and the file may contain 500 to 15,000 records. I need to search pattern ^F509= and then increment the corresponding value by one and print the entire line. Please note that Its not a fixed length file. Can anyone please help? ex: ^F509=204656 ^F509=204656 ... (6 Replies)
Discussion started by: vinus
6 Replies

10. UNIX for Beginners Questions & Answers

Grep file starting from pattern matching line

I have a file with a list of references towards the end and want to apply a grep for some string. text .... @unnumbered References @sp 1 @paragraphindent 0 2017. @strong{Chalenski, D.A.}; Wang, K.; Tatanova, Maria; Lopez, Jorge L.; Hatchell, P.; Dutta, P.; @strong{Small airgun... (1 Reply)
Discussion started by: kristinu
1 Replies
dos2unix(1)						      General Commands Manual						       dos2unix(1)

NAME
dos2unix - DOS/MAC to UNIX text file format converter SYNOPSYS
dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...] Options: [-hkqV] [--help] [--keepdate] [--quiet] [--version] DESCRIPTION
This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format. OPTIONS
The following options are available: -h --help Print online help. -k --keepdate Keep the date stamp of output file same as input file. -q --quiet Quiet mode. Suppress all warning and messages. -V --version Prints version information. -c --convmode convmode Sets conversion mode. Simulates dos2unix under SunOS. -o --oldfile file ... Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used. -n --newfile infile outfile ... New file mode. Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be used or you WILL lost your files. EXAMPLES
Get input from stdin and write output to stdout. dos2unix Convert and replace a.txt. Convert and replace b.txt. dos2unix a.txt b.txt dos2unix -o a.txt b.txt Convert and replace a.txt in ASCII conversion mode. Convert and replace b.txt in ISO conversion mode. Convert c.txt from Mac to Unix ascii format. dos2unix a.txt -c iso b.txt dos2unix -c ascii a.txt -c iso b.txt dos2unix -c mac a.txt b.txt Convert and replace a.txt while keeping original date stamp. dos2unix -k a.txt dos2unix -k -o a.txt Convert a.txt and write to e.txt. dos2unix -n a.txt e.txt Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt. dos2unix -k -n a.txt e.txt Convert and replace a.txt. Convert b.txt and write to e.txt. dos2unix a.txt -n b.txt e.txt dos2unix -o a.txt -n b.txt e.txt Convert c.txt and write to e.txt. Convert and replace a.txt. Convert and replace b.txt. Convert d.txt and write to f.txt. dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt DIAGNOSTICS
BUGS
The program does not work properly under MSDOS in stdio processing mode. If you know why is that so, please tell me. AUTHORS
Benjamin Lin - <blin@socs.uts.edu.au> Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org> MISCELLANY
Tested environment: Linux 1.2.0 with GNU C 2.5.8 SunOS 4.1.3 with GNU C 2.6.3 MS-DOS 6.20 with Borland C++ 4.02 Suggestions and bug reports are welcome. SEE ALSO
unix2dos(1) mac2unix(1) 1995.03.31 dos2unix v3.0 dos2unix(1)
All times are GMT -4. The time now is 04:02 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy