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Top Forums Shell Programming and Scripting How to read n number of lines from a file Post 302369524 by varsha on Monday 9th of November 2009 12:35:02 AM
Old 11-09-2009
Help!!

Hello all,

I have a script which calculate avg for columnwise I attaced the script below

script
Code:
echo "enter file name"
read file
cat $file
awk 'BEGIN {FS=OFS=" "} { for (i=1; i<=NF; i++) sum[i] += $i; j=NF }
END { printf "%s%s", "------------------", "\nAvg"; for (i=1; i <= j; i++) printf "%s%s", OFS, sum[i]/NR; printf "\n"; }' $file

output
Code:
enter file name
vfile
1 5 3 4 6 8
5 5 7 9 0 1
4 6 4 4 6 2
6 7 8 12 3 4
------------------
Avg 4 5.75 5.5 7.25 3.75 3.75


but when there is any disordered no of row for eg 1st col may have 5rows 2nd column have 4rows means it is calculating only 1st col

sample output
Code:
enter file name
vfile
1 5 3 4 6 8 9 9
5 5 7 9 0 1  1
4 6 4 4 6 2
6 7 8 12 3 4
7    9
------------------
Avg 4.6 6.4


but i want the output like more over in the above o/p instead of 6.2 its printing 6.4

Code:
enter file name
vfile
1 5 3 4 6 8 9 9
5 5 7 9 0 1 1
4 6 4 4 6 2
6 7 8 12 3 4
7    9
------------------
Avg 4.6 5.75 6.2 7.25 3.75 3.75 5 9


I belive my promblem would have reached u plzzzzzzzz kindly help meSmilieSmilieSmilie


Thanks!!!!SmilieSmilie

Last edited by Franklin52; 02-16-2010 at 07:03 AM.. Reason: Please use code tags!
 

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diff3(1)						      General Commands Manual							  diff3(1)

Name
       diff3 - 3-way differential file comparison

Syntax
       diff3 [-ex3] file1 file2 file3

Description
       The command compares three versions of a file, and publishes the ranges of text that disagree, flagged with the following codes:

	  ====	      all three files differ

	  ====1       file1 is different

	  ====2       file2 is different

	  ====3       file3 is different

       The type of change needed to convert a given range of a given file to some other is indicated in one of these ways:

	  f : n1 a    Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.

	  f : n1 , n2 c
		      Text is to be changed in the range line n1 to line n2.  If n1 = n2, the range may be abbreviated to n1.

       The original contents of the range follows immediately after a c indication.  When the contents of two files are identical, the contents of
       the lower-numbered file is suppressed.

Options
       -3   Produces an editor script containing the changes between file1 and file2 that are to be incorporated into file3.

       -e	   Produces an editor script containing the changes between file2 and file3 that are to be incorporated into file1.

       -x	   Produces an editor script containing the changes among all three files.

Examples
       Under the -e option, publishes a script for the editor that incorporates into file1 all changes between file2 and  file3  -  that  is,  the
       changes	that would normally be flagged ==== and ====3.	Option -x (-3) produces a script to incorporate only changes flagged ==== (====3).
       The following command applies the resulting script to `file1':
       (cat script; echo '1,$p') | ed - file1

Restrictions
       Text lines that consist of a single `.'	defeat -e.

Files
       /tmp/d3?????
       /usr/lib/diff3

See Also
       cmp(1), comm(1), diff(1), dffmk(1), join(1), sccsdiff(1), uniq(1)

																	  diff3(1)
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