loop through file of numbers Post: 81000

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1. Shell Programming and Scripting

read numbers from file and output which numbers belongs to which range

Howdy experts, We have some ranges of number which belongs to particual group as below. GroupNo StartRange EndRange Group0125 935300 935399 Group2006 935400 935476 937430 937459 Group0324 935477 935549 ...

2. Shell Programming and Scripting

Loop assistance, getting array of random numbers and feeding to a command, how-to?

Hi all, I need a little assistance to complete the following script. I would like to take a file with a single number on each line and for each number, run it through a command. The loop will terminate once all numbers have been checked. Here is what I have thus far... COUNTER=`wc -l...

3. Shell Programming and Scripting

the smallest number from 90% of highest numbers from all numbers in file

Hello All, I am having problem to find what is the smallest number from 90% of highest numbers from all numbers in file. I am having file with thousands of lines and hundreds of columns. I am familiar mainly with bash but I am open to whatever suggestion witch will lead to the solutions. If I...

4. Shell Programming and Scripting

Extract rows from file based on row numbers stored in another file

Hi All, I have a file which is like this: rows.dat 1 2 3 4 5 6 3 4 5 6 7 8 7 8 9 0 4 3 2 3 4 5 6 7 1 2 3 4 5 6 I have another file with numbers like these (numbers.txt): 1 3 4 5 I want to read numbers.txt file line by line. The extract the row from rows.dat based on the...

5. Shell Programming and Scripting

A way to store 2 random numbers from a for loop?

I have a for loop that cycles twice and generates 1 random number for each pass through. I would like to be able to store the two numbers to use later for arithmetics. Is there a way to do that? Right now I can only seem to use the last random number for anything. Thanks.

6. Shell Programming and Scripting

[Solved] How to increment and add variable length numbers to a variable in a loop?

Hi All, I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I...

7. Shell Programming and Scripting

Help with Using "while" loop to output series of numbers

Trying to use "while" loop command to create a series of numbers that looks like the following: 0 . 1 0 . 2 1 0 . 3 2 1 0 . 4 3 2 1 0 . 5 4 3 2 1 0 . 6 5 4 3 2 1 0 . 7 6 5 4 3 2 1 0 . 8 7 6 5 4 3 2 1 0 . 9 8 7 6 5 4 3 2 1 0 . I am very new to shell scripting and any help would be...

8. Shell Programming and Scripting

Reset while loop to loop same file multiple times

Hi, I want to read file multiple times. Right now i am using while loop but that is not working. ex. While read line do while read line2 do echo stmt1 #processing some data based on data., done < file2.txt done < file1.txt # This will have 10...

9. Shell Programming and Scripting

Sum up numbers in a for loop

Hi i have to calculate some numbers, column by column. Herfore i used a for-loop.. for i in {4..26};do awk -F"," '{x'$i'+=$'$i'}END{print '$i'"\t" x'$i'}' file.tmp;done ----- printout ----- 4 660905240 5 71205272 6 8.26169e+07 7 8.85961e+07 8 8.60936e+07 9 7.42238e+07 10 5.6051e+07...

10. Shell Programming and Scripting

Adding (as in arithmetic) to numbers in columns in file, and writing new file with new numbers

Hi again. Sorry for all the questions — I've tried to do all this myself but I'm just not good enough yet, and the help I've received so far from bartus11 has been absolutely invaluable. Hopefully this will be the last bit of file manipulation I need to do. I have a file which is formatted as...

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ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

read numbers from file and output which numbers belongs to which range

Discussion started by: thepurple

2. Shell Programming and Scripting

Loop assistance, getting array of random numbers and feeding to a command, how-to?

Discussion started by: boolean2222

3. Shell Programming and Scripting

the smallest number from 90% of highest numbers from all numbers in file

Discussion started by: Apfik

4. Shell Programming and Scripting

Extract rows from file based on row numbers stored in another file

Discussion started by: shoaibjameel123