i wrote this code..
#!/bin/sh
sum=0
for i in `cat numbers.txt |cut -f1`
do
sum=expr $sum + $i
done
echo $sum
I want to read the numbers in the file numbers.txt. and find sum of them. But this code only writes the numbers(without making sum) that it reads. Help me.. (2 Replies)
Hi
i data looks like this:
student 1
Subject1 45 55
Subject2 44 55
Subject3 33 44
//
student 2
Subject1 45 55
Subject2 44 55
Subject3 33 44
i would like to sum $2, $3 (marks) and divide each entry in $2 and $3 with their respective sums and print for each student as $4 and... (2 Replies)
I have a txt file with several columns and i want to peform an operation on two columns and output it to a new txt file .
file.txt
900.00000 1 1 1
500.00000
500.00000
100000.000
4
4
1.45257346E-07 899.10834 ... (4 Replies)
I need help with debugging an error in my awk script.
I have a shell script with variable named U_new_i and want to pass it to awk for use in a summation. The original file have the following content.
cat test.txt
-2445.7132000000
-2444.9349000000
-2444.3295000000
-2443.1814000000 ... (0 Replies)
Hi experts,
I need to do a mathematical calculation between each data in 3 different files. Output is using formula (A11+B11)/(1+C11).
INPUT :
File A.txt
A11 A12
A21 A22
File B.txt
B11 B12
B21 B22
File C.txt
C11 C12
C21 C22
OUTPUT:
(A11+B11)/(1+C11) (A12+B12)/(1+C12)... (3 Replies)
Hi Friends,
I have the following file
chr1 1 2
chr1 2 3
chr1 3 4
chr1 4 5
chr1 5 6
chr1 19 20
chr1 20 21
chr1 21 22
I want to compare the third column of record 1 to second column of next record and if the difference is zero, consider its third column and match it to next record... (4 Replies)
Sorry, about this thread - I solved my own problem! Thanks for taking a look.
edit by bakunin: no problem, but it would have been a nice touch to actually tell us what the solution was. This would have been slightlich more educating than just knowing that you found it.
I changed your title to... (0 Replies)
Hi Experts,
Please bear with me, i need help
I am learning AWk and stuck up in one issue.
First point : I want to sum up column value for column 7, 9, 11,13 and column15 if rows in column 5 are duplicates.No action to be taken for rows where value in column 5 is unique.
Second point : For... (12 Replies)
Discussion started by: as7951
12 Replies
LEARN ABOUT REDHAT
pamdeinterlace
pamdeinterlace(1) General Commands Manual pamdeinterlace(1)NAME
pamdeinterlace - remove ever other row from a PAM/PNM image
SYNOPSIS
pamdeinterlace [-takeodd] [-takeeven] N [infile]
You can use the minimum unique abbreviation of the options. You can use two hyphens instead of one. You can separate an option name from
its value with white space instead of an equals sign.
DESCRIPTION
pamdeinterlace Removes all the even-numbered or odd-numbered rows from the input PNM or PAM image. Specify which with the -takeeven and
-takeodd options.
This can be useful if the image is a video capture from an interlaced video source. In that case, each row shows the subject 1/60 second
before or after the two rows that surround it. If the subject is moving, this can detract from the quality of the image.
Because the resulting image is half the height of the input image, you will then want to use pamstretch or pnmscale to restore it to its
normal height:
pamdeinterlace myimage.ppm | pamstretch -yscale=2 >newimage.ppm
OPTIONS -takeodd
Take the odd-numbered rows from the input and put them in the output. The rows are numbered starting at zero, so the first row in
the output is the second row from the input. You cannot specify both -takeeven and -takeodd.
-takeeven
Take the even-numbered rows from the input and put them in the output. The rows are numbered starting at zero, so the first row in
the output is the first row from the input. This is the default. You cannot specify both -takeeven and -takeodd.
SEE ALSO pamstretch(1), pnmscale(1)
11 November 2001 pamdeinterlace(1)