Login or Register to Ask a Question and Join Our Community


UNIX for Beginners Questions & Answers

Reading file and matching it from set of file

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Reading file and matching it from set of file
# 1  
Old 10-03-2017
Reading file and matching it from set of file
Hi All,

I have file with set of records. I have to find if the record is available in the set if files and if yes need to get the file names of it.

Example
Code:
head unmatch
02000417
02001855
02004639
02005420
02005440
02005454
02006624
02006743
02007097
02008770

-rw-rw-r-- 1 ftpuser pfus 131868931 Oct  3 10:45 50.h
-rw-rw-r-- 1 ftpuser pfus 135538052 Oct  3 10:46 51.h
-rw-rw-r-- 1 ftpuser pfus 123051798 Oct  3 10:47 52.h
-rw-rw-r-- 1 ftpuser pfus 123583711 Oct  3 10:48 01.h


The record in unmatch can be in any of the file 50.h,51.h,52.h,01.h. The record search should happen only on 1-8 position. I have to take the record from unmatch and then compare with all 1-8 position record in 50.h,51.h,52.h,01.h and the print the result where ever it matched.
# 2  
Old 10-03-2017
Some samples of matching and non-matching data lines in the files, please.
This User Gave Thanks to RudiC For This Post:
arunkumar_mca
# 3  
Old 10-03-2017
I think I understand what you're getting at... Each line of unmatch is the first 8 characters of a record you want to retrieve.

Code:
awk 'NR==FNR { A[$1] ; next } # Store matching record IDs in A
substr($0,0,8) in A # Check first 8 chars of record and print if in A
        ' unmatch 50.h 51.h 52.h 01.h

Use nawk on solaris.
Last edited by Corona688; 10-03-2017 at 12:53 PM..
This User Gave Thanks to Corona688 For This Post:
arunkumar_mca
# 4  
Old 10-03-2017
Yes each line of unmatched will be in any of the set of the file with *.h . I have to take a record from unmatch and find if they are available on 1,8 position on *.h and print the record and the file *.h name where it was found.

I executed the awk. it is giving me the record. How can I get the file name too.
This User Gave Thanks to arunkumar_mca For This Post:
Corona688
# 5  
Old 10-03-2017
Change the line:
Code:
substr($0,0,8) in A # Check first 8 chars of record and print if in A

in Corona688's suggestion to:
Code:
substr($0,0,8) in A { print FILENAME, $0 } # Check first 8 chars of record and print if in A

assuming that you want the file name printed before the contents of the line.

Showing us sample input and the output you wanted from that sample input (and telling us what operating system and shell you're using) would have gotten you a working suggestion much sooner.
This User Gave Thanks to Don Cragun For This Post:
arunkumar_mca
# 6  
Old 10-03-2017
Thanks that worked. Thanks a lot
# 7  
Old 10-03-2017
Shouldn't that be substr($0,1,8) in A?

I wasn't sure if the substring to be compared had to be in chars 1 - 8 or start in 1 - 8 , i.e. possibly be from 8 - 15.

Try also
Code:
sed 's/^/^/' unmatch | grep -f- *.h

Last edited by RudiC; 10-03-2017 at 02:05 PM..
This User Gave Thanks to RudiC For This Post:
arunkumar_mca
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

awk to update file with partial matching line in another file and append text

In the awk below I am trying to cp and paste each matching line in f2 to $3 in f1 if $2 of f1 is in the line in f2 somewhere. There will always be a match (usually more then 1) and my actual data is much larger (several hundreds of lines) in both f1 and f2. When the line in f2 is pasted to $3 in... (4 Replies)
Discussion started by: cmccabe
4 Replies

2. Shell Programming and Scripting

ksh Script, Reading A File, Grepping A File Contents In Another File

So I'm stumped. First... APOLOGIES... my work is offline in an office that has zero internet connectivity, as required by our client. If need be, I could print out my script attempts and retype them here. But on the off chance... here goes. I have a text file (file_source) of terms, each line... (3 Replies)
Discussion started by: Brusimm
3 Replies

3. Shell Programming and Scripting

Find matching file in bash with variable file names but consisent prefixs

As part of a bash the below line strips off a numerical prefix from directory 1 to search for in directory 2. for file in /home/cmccabe/Desktop/comparison/missing/*.txt do file1=${file##*/} # Strip off directory getprefix=${file1%%_*.txt} ... (5 Replies)
Discussion started by: cmccabe
5 Replies

4. Shell Programming and Scripting

Shell script to filter records in a zip file that contains matching columns from another file

Not sure if this is the correct forum for this question. I have two files. file1.zip, file2 Input: file1.zip col1, col2 , col3 a , b , 0:0:0:0:0:c436:9346:d40b x, y, 0:0:0:0:0:880:39f9:c9a7 m, n , 0:0:0:0:0:80c7:9161:fe00 file2.txt col1 c4:36:93:46:d4:0b... (1 Reply)
Discussion started by: anil.v
1 Replies

5. UNIX for Dummies Questions & Answers

Reading Xml file and print the values into the text file in columnwise?

hi guys, i want help... Reding XML file and print the values into the text file using linux shell script file as per below xml file <sequence> <Filename>aldorzum.doc</Filename> <DivisionCode>US</DivisionCode> <ContentType>Template</ContentType> <ProductCode>VIMZIM</ProductCode> </sequence>... (4 Replies)
Discussion started by: sravanreddy
4 Replies

6. Shell Programming and Scripting

awk - writing matching pattern to a new file and deleting it from the current file

Hello , I have comma delimited file with over 20 fileds that i need to do some validations on. I have to check if certain fields are null and then write the line containing the null field into a new file and then delete the line from the current file. Can someone tell me how i could go... (2 Replies)
Discussion started by: goddevil
2 Replies

7. Shell Programming and Scripting

Searching for Log / Bad file and Reading and writing to a flat file

Need to develop a unix shell script for the below requirement and I need your assistance: 1) search for file.log and file.bad file in a directory and read them 2) pull out "Load_Start_Time", "Data_File_Name", "Error_Type" from log file 4) concatinate each row from bad file as... (3 Replies)
Discussion started by: mlpathir
3 Replies

8. Shell Programming and Scripting

Reading lines in a file matching a pattern

Hi, I need to redirect the lines in a file to a different file if the character starting from 2 to 6 in the line are numerical . Please let me know if anyone have any script to do this. Thanks, Ranjit (4 Replies)
Discussion started by: torenji
4 Replies

9. UNIX for Advanced & Expert Users

Reading a file and writing the file name to a param file.

Hi All, Not sure if this would be in a dummies sectiin or advanced. I'm looking for a script if someone has doen something like this. I have list of files - adc_earnedpoints.20070630.txt adc_earnedpoints.20070707.txt adc_earnedpoints.20070714.txt adc_earnedpoints.20070721.txt... (1 Reply)
Discussion started by: thebeginer
1 Replies

10. Shell Programming and Scripting

Reading file names from a file and executing the relative file from shell script

Hi How can i dynamically read files names from a list file and execute them from a single shell script. Please help its urgent Thanks in Advance (4 Replies)
Discussion started by: anushilrai
4 Replies
Login or Register to Ask a Question