Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Paste columns based on common column: multiple files

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Paste columns based on common column: multiple files
# 15  
Old 12-30-2017
@RudiC:
Thank you for your reply. I read awk man page.

Apologies for my repeats on this post.
I know the code is reading files twice, but which lines manage it, I'm wondering. Smilie

Copying code from #9:

Code:
FNR == 1        {FC++                                           # count files opened
                 if (FC <= TF) ARGV[ARGC++] = FILENAME          # if still in the original files 
                }                                               # list, append file name to argument list  
                                                                # so every file will be read twice
FC <= TF        {CNT[$2]++                                      # if still in org. files, count $2 occurrences
                 next                                           # and don''t proceed in script
                }

Does next allow to read the files once and again read them for the following code? I know next skips all the code below in the script.


Or the following lines take care of reading files twice: ?
Code:
           if (FC <= TF) ARGV[ARGC++] = FILENAME

# 16  
Old 12-31-2017
next skips all remaining code for the actual line, reads the next line and starts over.

Appending a string to the ARGV array will make awk interpret it as a file name and try to open and read it, so appending FILENAME will read that file another time (after all other ARGV elements have been depleted).
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to copy a column of multiple files and paste into new excel file (next to column)?

I have data of an excel files as given below, file1 org1_1 1 1 2.5 100 org1_2 1 2 5.5 98 org1_3 1 3 7.2 88 file2 org2_1 1 1 2.5 100 org2_2 1 2 5.5 56 org2_3 1 3 7.2 70 I have multiple excel files as above shown. I have to copy column 1, column 4 and paste into a new excel file as... (26 Replies)
Discussion started by: dineshkumarsrk
26 Replies

2. Shell Programming and Scripting

Join columns across multiple lines in a Text based on common column using BASH

Hello, I have a file with 2 columns ( tableName , ColumnName) delimited by a Pipe like below . File is sorted by ColumnName. Table1|Column1 Table2|Column1 Table5|Column1 Table3|Column2 Table2|Column2 Table4|Column3 Table2|Column3 Table2|Column4 Table5|Column4 Table2|Column5 From... (6 Replies)
Discussion started by: nv186000
6 Replies

3. UNIX for Dummies Questions & Answers

Merge selective columns from files based on common key

Hi, I am trying to selectively merge two files based on keys reported in the 1st column. File1: #file1-header1 file1-header2 111 qwe rtz uio 198 asd fgh jkl 165 yxc 789 poi uzt rew 89 lkj File2: #file2-header2 file2-header2 165 ghz nko2 ... (2 Replies)
Discussion started by: dovah
2 Replies

4. UNIX for Dummies Questions & Answers

How to join 2 .txt files based on a common column?

Hi all, I'm trying to join two .txt file tab delimitated based on a common column. File 1 transcript_id gene_id length effective_length expected_count TPM FPKM IsoPct comp1000201_c0_seq1 comp1000201_c0 337 183.51 0.00 0.00 0.00 0.00 comp1000297_c0_seq1 ... (1 Reply)
Discussion started by: alisrpp
1 Replies

5. Shell Programming and Scripting

common entries between files based on 1st column

Hi, I am trying to get the common entries from 2 files based on 1st field.. However when I try to do in perl I am getting blank output.. How can I do this in awk? open(BUFF1, "my_genes"); open(BUFF3, "rawcounts"); #open(WRBUFF,">result_rawcounts"); while($line =<BUFF1>) { ... (3 Replies)
Discussion started by: Diya123
3 Replies

6. UNIX for Dummies Questions & Answers

Writing a loop to merge multiple files by common column

I have 100 data files labelled 250.1.txt through 250.100.txt. The second column of the data files partially match (there is about %90 overlap). Each data file has 4 columns. I want the merge all these text files by the matching values in the second column. In the output, the first column should... (1 Reply)
Discussion started by: evelibertine
1 Replies

7. Shell Programming and Scripting

Join multiple files based on 1 common column

I have n files (for ex:64 files) with one similar column. Is it possible to combine them all based on that column ? file1 ax100 20 30 40 ax200 22 33 44 file2 ax100 10 20 40 ax200 12 13 44 file2 ax100 0 0 4 ax200 2 3 4 (9 Replies)
Discussion started by: quincyjones
9 Replies

8. Shell Programming and Scripting

Merging 2 files based on a common column

Hi All, I do have 2 files file 1 has 4 tab delimited columns 234 a c dfgyu 294 b g fih 302 c h jzh 328 z c san 597 f g son File 2 has 2 tab delimted columns 234 23 302 24 597 24 I want to merge file 2 with file 1 based on the data common in both files which is the first column so... (6 Replies)
Discussion started by: Lucky Ali
6 Replies

9. Shell Programming and Scripting

sum multiple columns based on column value

i have a file - it will be in sorted order on column 1 abc 0 1 abc 2 3 abc 3 5 def 1 7 def 0 1 -------- i'd like (awk maybe?) to get the results (any ideas)??? abc 5 9 def 1 8 (2 Replies)
Discussion started by: jjoe
2 Replies

10. Shell Programming and Scripting

How to convert 2 column data into multiple columns based on a keyword in a row??

Hi Friends I have the following input data in 2 columns. SNo 1 I1 Value I2 Value I3 Value SNo 2 I4 Value I5 Value I6 Value I7 Value SNo 3 I8 Value I9 Value ............... ................ SNo N (1 Reply)
Discussion started by: ks_reddy
1 Replies
Login or Register to Ask a Question