extract columns from 2 different files and create new file


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting extract columns from 2 different files and create new file
# 1  
Old 04-30-2009
extract columns from 2 different files and create new file

Hi All,

I have 2 issues while working with file.

1. I have 2 delimited(~) files. I want to extract column numbner 3 from file1 and column number 8 from file2 and paste it into file3. I have tried using cut, but not able to get answer.

2. i have 2 filxed-width file. I wanted to do same task as above for these files.

Could you please let me which command we need to use.
# 2  
Old 04-30-2009
considering the files are of the same lengh(records) [ not tested]

Code:
nawk 'BEGIN{FS=OFS="~";i=1;j=1}
FILENAME == "file1" {
a[i]=$3
i++
next
}
FILENAME == "file2" {
b[j]=$8
j++
next
}
END{
for ( i in a)
print a[i],b[i] 
} ' file1 file2 > file3

cheers,
Devaraj Takhellambam
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Match Columns in one file and extract columns from another file

Kindly help merging information from two files with the following data structure. I want to match for the CHR-SNP in Foo and get the columns that match from CHROM-rsID Fields 1 & 2 of foo may have duplicates, however, a joint key of Fields $1$2$3$4 is unique. Also would be helpful to clean up... (4 Replies)
Discussion started by: genehunter
4 Replies

2. Shell Programming and Scripting

Extract columns into seperate file

I have a comma delimited file as per the one below and I am currently extracting the values in 2 columns (COL1 & COL6) to produce a smaller trimmed down version of the file which only contains the columns we need; COL1,COL2,COL3,COL4,COL5,COL6,COL7,COL8,COL9... (1 Reply)
Discussion started by: Ads89
1 Replies

3. Shell Programming and Scripting

Compare 2 csv files by columns, then extract certain columns of matcing rows

Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns. I want to compare file1 and file2 by 'id' and 'chain' columns, then extract exact matching rows'... (5 Replies)
Discussion started by: bkane3
5 Replies

4. Shell Programming and Scripting

Comparing Select Columns from two CSV files in UNIX and create a third file based on comparision

Hi , I want to compare first 3 columns of File A and File B and create a new file File C which will have all rows from File B and will include rows that are present in File A and not in File B based on First 3 column comparison. Thanks in advance for your help. File A A,B,C,45,46... (2 Replies)
Discussion started by: ady_koolz
2 Replies

5. UNIX for Dummies Questions & Answers

Extract columns by matching ids in two files

Hello, I want to extract columns from file2 to file3 by matching ids between file1 and file2. The extracted columns should be in same order as file1 ids. for example: file1.txt 1823 607 R2A9 802 771 file2.txt 1823 1 2 4 22 11 4 29 607 12 3 3 R2A9... (8 Replies)
Discussion started by: ryan9011
8 Replies

6. Shell Programming and Scripting

Create shell script to extract unique information from one file to a new file.

Hi to all, I got this content/pattern from file http.log.20110808.gz mail1 httpd: Account Notice: close igchung@abc.com 2011/8/7 7:37:36 0:00:03 0 0 1 mail1 httpd: Account Information: login sastria9@abc.com proxy sid=gFp4DLm5HnU mail1 httpd: Account Notice: close sastria9@abc.com... (16 Replies)
Discussion started by: Mr_47
16 Replies

7. UNIX for Dummies Questions & Answers

Extract columns from multiple files with a file name as heading

Hi All, I have 7 files, each containing 9 columns separated by space. I want to extract the 9th columns from every file and save in a new file. The columns must be pasted next to each other. And the title of each columns should be the name of the corresponding files! Since the 3rd column is... (1 Reply)
Discussion started by: Unilearn
1 Replies

8. Shell Programming and Scripting

Extract Columns from file

Hi All, Could you please help me with following: I have to parse a .csv file. For example: If the csv file contains 3 columns, then i have to print the column names. The field separator is (comma). example.csv (contains 2 lines as follows) This is,a test file, for validation... (2 Replies)
Discussion started by: vfrg
2 Replies

9. Shell Programming and Scripting

Help, need to extract columns from file

I have huge fixed width, text file in unix box and I need to extract columns found between the width 105 and 200 and output it to a new file. Can anyone tell me how to extract it? Thanks for your help. (1 Reply)
Discussion started by: kiran2k
1 Replies

10. Shell Programming and Scripting

how to extract columns from a text file

Hi, In ksh, I have a file with similar rows as follows: Department = 1234 G/L Asset Acct No = 12.0000. 2/29/2008 Department = 1234 G/L Asset Acct No = 13.0000. 3/29/2008. I want to create a new text file that contains only the numbers and date: 1234 12.0000. 2/29/2008 1234 13.0000. ... (16 Replies)
Discussion started by: ihot
16 Replies
Login or Register to Ask a Question