Linux

Hi

I have 2 files

file1:

Code:

SNP_A-2208459   
SNP_A-4215188   
SNP_A-2012248   
SNP_A-1882998

file2:

Code:

CHR  SNP  UNADJ       BONF         HOLM     *   *    *  etc.
  19   SNP_A-2236481  1.742e-26  5.442e-21    
  13   SNP_A-4204405  8.643e-07  1.505e-06   
   3    SNP_A-1860908  4.483e-06  7.279e-06
   7    SNP_A-1990194  7.434e-06  1.181e-05
   *
   *
   *
   etc. (thousands of rows)

Note: file2 also contains the entries listed in file1

Question: I'm using grep -w -f file1 file2 > file3 to match in file2 only the entries listed in file1, BUT this does not work ; the output file3 is giving me everything listed in file2 .

Can anyone help? pleaaaaaaaaaaaaase

Thank you!

What does -F do if used instead of -f?

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-F does not work only either.

1. -w means word. And -(hyphen) is not a word character.

So file3 will not have any content, ( by the sample input you gave ). Confirm whether you are right in saying that.

2. Solution.

Code:

grep -f file1 file2

Let us know whether this helped.

thegeek;

Thank you for trying to help me, but grep -f file1 file2 > file3
DOES NOT WORK.


---------- Post updated 09-25-09 at 03:56 PM ---------- Previous update was 09-24-09 at 09:47 PM ----------

I also deleted the hyphens, underscores and letters from the in both files but the grep -f file1 file2 > file3 does not work
SNP_A-2208459

---------- Post updated at 03:58 PM ---------- Previous update was at 03:56 PM ----------

Ok, I give up with this forum, I guess nobody wants to help.

did you try the man pages?

i think diff may be another way around it check man diff also