Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Compare two files with awk

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Compare two files with awk
# 1  
Old 11-24-2010
Compare two files with awk
Hello,

I have a script which extracts the values from a csv file when a specific date is entered :

Code:
#!/bin/sh
awk 'BEGIN{printf("Entrez la date : "); getline date < "-"}
$0 ~ date {f=1;print;next}
/^[0-9]{2}\//{f=0}
f' file1.csv

This script gives me a number of lines with different values.

I have another csv file which contains possible matching values with the first file and with the values below :

Code:
Action1;Action11;Action12;Action13
Action2;Action21
Action3;Action31;Action32

How to redirect the matching results of file1 and file2 in another output file ?

Is it possible to do it in the same script ?

Thanx a lot for your help Smilie
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!
Last edited by vgersh99; 11-24-2010 at 09:44 AM.. Reason: Code tags, please!
# 2  
Old 11-24-2010
Post the content of both files and the desired output based on those files.

Please use code tags!
# 3  
Old 11-24-2010
Sorry :

File 1:

Code:
01/12/2010;;;;;;;;;;;
;Action_1;; Comment;Comment;;;;;;"File Comment";
;Action_2;; Comment;Comment;;;;;;"Exclusif";
;Action_3;; Comment;Comment;;;;;;"Not exclusif";
;Action_4;; Comment;Comment;;;;;;"Another File Comment";
;Action_5;; Comment;Comment;;;;;;"File Comment";
;Action_6;; Comment;Comment;;;;;;"File Comment";
02/12/2010;;;;;;;;;;;
;Action_1;; Comment;Comment;;;;;;"File Comment";
;Action_2;; Comment;Comment;;;;;;"Exclusif";
;Action_3;; Comment;Comment;;;;;;"Not exclusif";
;Action_4;; Comment;Comment;;;;;;"Another File Comment";
;Action_5;; Comment;Comment;;;;;;"File Comment";
;Action_6;; Comment;Comment;;;;;;"File Comment";

File 2 :

Code:
BP_101;BP_10101;BP_10102;BP_10103
BP_209;BP_20903
BP_0RT;BP_WG7SH

Thanks in advance

Moderator's Comments:
Mod Comment
You've been warned in this thread ALREADY!!!
Please use code tags when posting data and code samples!


---------- Post updated at 08:55 AM ---------- Previous update was at 08:52 AM ----------

Sorry again,

File 2 contains this :

Code:
Action_1;Action11;Action12;Action13
Action_2;Action21
Action_3;Action31;Action32

Last edited by vgersh99; 11-24-2010 at 10:05 AM.. Reason: Code tags, please!
# 4  
Old 11-24-2010
Code:
#!/bin/sh
awk 'BEGIN{FS=OFS=";";printf("Entrez la date : "); getline date < "-"}
        FNR==NR {for(i=1;i<=NF;i++)f2[$i];next}
        $0 ~ date {f=1;print;next}
       /^[0-9]{2}\//{f=0}
       f && $2 in f2' file2.csv file1.csv

# 5  
Old 11-24-2010
Thanks a lot for all your help. This forum is really good and very helpful.

Can you please tell me what is the signification of all this :

Code:
FNR==NR {for(i=1;i<=NF;i++)f2[$i];next}

I know FNR stands for the ordinal number of the current record in the current file and that NR stands for the ordinal number of the current record from the start of input, but I don't understand the whole sentence
# 6  
Old 11-24-2010
Quote:
Originally Posted by freyr
Thanks a lot for all your help. This forum is really good and very helpful.

Can you please tell me what is the signification of all this :

Code:
FNR==NR {for(i=1;i<=NF;i++)f2[$i];next}

I know FNR stands for the ordinal number of the current record in the current file and that NR stands for the ordinal number of the current record from the start of input, but I don't understand the whole sentence
The condition FNR==NR will be true only for the FIRST file passed to awk for processing. Therefore, we read file2 into hash FIRST - then proceed with the processing for the other/file1 files.
Last edited by vgersh99; 11-24-2010 at 10:54 AM..
These 2 Users Gave Thanks to vgersh99 For This Post:
freyr som.nitk
# 7  
Old 11-24-2010
Thanks a lot Smilie Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

[awk] Compare two files

HI!! I am trying to compare two files using AWK but I have some problems. I need to count how many times letters are used in two texts. This is my script { long=length($0) for (i=1;i<=long;i++) { aux=substr($0,i,1) if ( aux != " " && aux != "" ) ... (7 Replies)
Discussion started by: ettore8888
7 Replies

2. Shell Programming and Scripting

awk compare files

I have a below requirement and trying to compare the files using awk File 1 - Already stored on a prev day id | text | email id --------------------------------- 89564|this is line 1 | xyz@sample.txt 985384|this is line 2 | abc@sample.txt 657342|this is line 3 |... (3 Replies)
Discussion started by: rakesh_411
3 Replies

3. Shell Programming and Scripting

Compare 2 files, awk maybe?

I have 2 files, file1: alfa numbers numbers vita numbers numbers gama numbers numbers delta numbers numbers epsilon numbers numbers zita numbers numbers ... file2: 'zita' keepnumbers keepnumbers keepnumbers 'gama' keepnumbers keepnumbers keepnumbers 'misc' ... (11 Replies)
Discussion started by: phaethon
11 Replies

4. HP-UX

Awk compare two files

Hi guys, I have 2 files: File1 ABC|2203|115.50 ABC|2288|328.12 ABC|2289|611.09 ABC|2290|698 DEF|1513|721.3 DEF|1514|40 DEF|1515|5 File2 ABC|2288|328.12 ABC|2289|666.08 ABC|2290|698.00 DEF|1513|721.30 (3 Replies)
Discussion started by: Eduardo Aceves
3 Replies

5. Shell Programming and Scripting

Compare files using awk

Please help me to compare two files and remove the items in file2 from file1 file 1:delimited using pipe(|) file1 00012|Description - 1|||||AA12345|1|AB12345|2|2012/06/03 AB123|Description - 2|||||AA12345|3|ZA11111|4|2012/06/04 11111|Description - 3|||||AP00012|1|AB12345|2|2012/06/03... (8 Replies)
Discussion started by: Mary James
8 Replies

6. Shell Programming and Scripting

awk command to compare a file with set of files in a directory using 'awk'

Hi, I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files. To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
Discussion started by: anandek
10 Replies

7. UNIX for Dummies Questions & Answers

Using AWK to compare 2 files

Hi How can I use awk to compare specific columns in 2 files and print the difference. I currently have this: BEGIN { OFS = FS = "," } NR == FNR { b = $3 next } { e = "" for (x in b) { if (match ($1, x)) { if (RSTART == 1 && RLENGTH > length(e)) { e=x (2 Replies)
Discussion started by: ladyAnne
2 Replies

8. Shell Programming and Scripting

compare two files using awk

Hi, I want to compare two files using awk and write an output based on if the records matched. Both the files are space delimitted. File A: 8351 00000000000636 2009044 -00001.000 8351 00000000000637 2009044 -00002.000 8351 00000000000638 2009044 -00001.000 8351 00000000000640... (7 Replies)
Discussion started by: gpaulose
7 Replies

9. Shell Programming and Scripting

Compare two files using awk

Hi. I'm new to awk and have searched for a solution to my problem, but haven't found the right answer yet. I have two files that look like this: file1 Delete,3105551234 Delete,3105551236 Delete,5625559876 Delete,5625556789 Delete,5625553456 Delete,5625551234 Delete,5625556956... (8 Replies)
Discussion started by: paul.o
8 Replies

10. Shell Programming and Scripting

awk compare 2 files

Hi i hope some awk gurus here can help me.. here is what i need i have 2 files: File1 152445 516532 405088.pdf 152445 516533 405089.pdf 152491 516668 405153.jpg 152491 520977 408779.jpg 152491 0 409265.pdf File2 516532 /tmp/MainStreet_Sum09_Front_FNL.pdf 516533... (9 Replies)
Discussion started by: kenray
9 Replies
Login or Register to Ask a Question