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Say i have 2 files in the giving format:
file1
1 2 3 4
1 2 3 4
1 2 3 4

file2
1 2 3 4
1 2 3 4
1 2 3 4

I have a PERL code (loaned by one of u -i forgot who - thanks!) that extracts the...

Thanks -this works! how can I modify it so that it prints to file rather than the screen?

thanks again

#!/bin/bash
for file in /home/epi/tmurray/reich_stuff/21
do cut -d' ' -f2 *.21 >> out.txt ; done

The above loop does the extraction but appends the column from each file vertically. How can I...

I have over 900 files that have the same name except for a unique numeric assignment. For all files I would like to cut the 2nd column and paste all into one new file. All in bash.
sample input...

I have over 900 files that have the same name except for a unique numeric assignment. For all files I would like to cut the 2nd column and paste all into one new file. All in bash.
sample input...

doesn't work.

example format of file:

id a1 a2
1 A B
2 A B
3
4 A B


Even the following perl code only replaces some of the blanks with 0.

#!/usr/local/bin/perl
open...

I have a file where the rows correspond to individuals and the columns are about 106 variables. Each variable is coded as either ACGT, and "missing" is coded as blank. This is a tab delimited file....