Compare two files with awk


 
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# 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 10:44 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 11:05 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 11:54 AM..
These 2 Users Gave Thanks to vgersh99 For This Post:
# 7  
Old 11-24-2010
Thanks a lot Smilie Smilie
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