Comparing two columns from two different files


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Comparing two columns from two different files
# 8  
Old 02-02-2012
Quote:
Originally Posted by amarn
thank you tukuyomi, however the code you gave me produces only the the first column of file2 and does not go through the comparison...
?_?
Code:
~/unix.com$ cat file1
00AB01/11
43TG22/00
78RC09/34
~/unix.com$ cat file2
78RC09/34 1
45FD11/11 2
00AB01/11 3
43TG22/00 4
~/unix.com$ awk 'NR==FNR{A[$1]=$2;next}$0=$1 OFS A[$1]' file2 file1
00AB01/11 3
43TG22/00 4
78RC09/34 1

This User Gave Thanks to tukuyomi For This Post:
# 9  
Old 02-03-2012
dear tukuyomi, i'm following exactly what you wrote and still i get only the column of $1 from file 2

Code:
akm@snoopy:~/temp$ awk 'NR==FNR{A[$1]=$2;next}$0=$1 OFS A[$1]' file2 file1 > file3
akm@snoopy:~/temp$ cat file3
78RC09/34 
45FD11/11 
00AB01/11 
43TG22/00

---------- Post updated at 06:58 AM ---------- Previous update was at 06:48 AM ----------

ok,my bad, i was inserting file1 instead of file2 in the previous awk command...however i still get the comparison results of column $1 successfully but i'm not able to get their corresponding $2 column.

so now i get in the newly file3 after:

Code:
awk 'NR==FNR{A[$1]=$2;next}$0=$1 OFS A[$1]' file2 file1 > file3

Code:
cat file3
00AB01/11 
43TG22/00 
78RC09/34

---------- Post updated at 07:08 AM ---------- Previous update was at 06:58 AM ----------

tukuyomi,

ok, i'll need to update you on that...the command you wrote is correct but for a weird reason this command was not fully functional on an ubuntu machine...i've tried it on cygwin in a windows environment and it worked perfectly well...sounds a bit awkward but ok,..at the very end everything now is okSmilie

thank you!
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Need help in comparing multiple columns from two files.

Hi all, I have two files as below. I need to compare field 2 of file 1 against field 1 of file 2 and field 5 of file 1 against filed 2 of file 2. If both matches , then create a result file 1 with first file data and if not matches , then create file with first fie data. Please help me in... (12 Replies)
Discussion started by: sivarajb
12 Replies

2. Shell Programming and Scripting

Comparing columns in two separate files

Hey all, I have a file structure that looks something like this: file1 306708278 88954535 234167885 file2 2012-03-27T12:32:56+00:00 137 Orchotorena 184616310003601409 306708278 es 40.4777947 Majadahonda -3.6416896333333333 0 false atlante83 "<a href=""http://tapbots.com/tweetbot""... (8 Replies)
Discussion started by: dgaff
8 Replies

3. Shell Programming and Scripting

AWK: Comparing two columns from two different files

Hi - I have two files as follows: File 1: chr5 118464905 118465027 ENST00000514151 utr5 0 + chr5 118464903 118465118 ENST00000504031 utr5 0 + chr5 118468826 118469180 ENST00000504031 utr5 0 + chr5 118469920 118470084 ... (14 Replies)
Discussion started by: polsum
14 Replies

4. Shell Programming and Scripting

comparing two columns from two different files

Hello, I have two files as 1.txt and 2.txt with number as columns. 1.txt 0 53.7988 1 -30.0859 2 20.1632 3 14.2135 4 14.6366 5 -37.6258 . . . 31608 -8.57333 31609 -2.58554 31610 -24.2857 2.txt (1 Reply)
Discussion started by: AKD
1 Replies

5. UNIX for Dummies Questions & Answers

Comparing columns in two files

Hi, I have two files. File1.txt has 2 columns and looks like: 458739 122345 4456 122657 34200 122600 File2.txt has many columns with column 1 the same as column2 of File1.txt, but with lot more rows: 122786 abcdefg user1@email 122778 uuhjeufh user2@email... (1 Reply)
Discussion started by: ursaan
1 Replies

6. UNIX for Dummies Questions & Answers

Comparing 2 columns from 2 files

Hi, I have two files with the same number of columns. Basically I want to print the 2 columns that match between the two files. File1 looks like this: dr12 12 6 abn dr14 12 7 abn File2 looks something like this: dr12 12 8 abn dr12 14 7 abn So basically if the first... (1 Reply)
Discussion started by: kylle345
1 Replies

7. Shell Programming and Scripting

comparing 2 columns from 2 files

Hey, I have 2 files that have a name and then a number: File 1: dog 21 dog 24 cat 33 cat 27 dog 76 cat 65 File 2: dog 109 dog 248 cat 323 cat 207 cat 66 (2 Replies)
Discussion started by: dcfargo
2 Replies

8. Shell Programming and Scripting

comparing the columns in two files

I have two files file1 and file 2 both are having multiple coloumns.i want to select only two columns. i used following code to get the desired columns,with ',' as delimiter cut -d ',' -f 1,2 file1 | sort > file1.new cut -d ',' -f 1,2 file2 | sort > file2.new I want to get the coloums... (1 Reply)
Discussion started by: bab123
1 Replies

9. Shell Programming and Scripting

Comparing Columns of two FIles

Dear all, I have two files in UNIX File1 and File2 as below: File1: 1,1234,.,67.897,,0 1,4134,.,87.97,,4 0,1564,.,97.8,,1 File2: 2,8798,.,67.897,,0 2,8879,.,77.97,,4 0,1564,.,97.8,,1 I want to do the following: (1) Make sure that both the files have equal number of columns and if... (4 Replies)
Discussion started by: ggopal
4 Replies

10. UNIX for Advanced & Expert Users

Comparing Columns of two FIles

Dear all, I have two files in UNIX File1 and File2 as below: File1: 1,1234,.,67.897,,0 1,4134,.,87.97,,4 0,1564,.,97.8,,1 File2: 2,8798,.,67.897,,0 2,8879,.,77.97,,4 0,1564,.,97.8,,1 I want to do the following: (1) Make sure that both the files have equal number of columns and if... (1 Reply)
Discussion started by: ggopal
1 Replies
Login or Register to Ask a Question