$ cat file.txt
A|X|20
A|Y|20
A|X|30
A|Z|20
B|X|10
A|Y|40
Summing up $NF based on first 2 fields,
$ awk -F "|" 'BEGIN {OFS="|"}
{ sum[$1 OFS $2] += $NF }
END { for (f in sum) print f,sum[f] }
' file.txt
o/p:
A|X|50
A|Y|60
A|Z|20
B|X|10
Works !!
Wondering if we can assign the "$1 OFS $2" part in some variable so that
$ var="$1 OFS $2"
And something like this will work
$ awk -v x=$var -F "|" 'BEGIN {OFS="|"}
{ sum[x] += $NF }
END { for (f in sum) print f,sum[f] }
' file.txt
Presently its not working. The reason I have posted this : I have to sum based on a lot of fields and I want to make it kind of configurable outside awk. Please.
why do inode indices starts from 1 unlike array indexes which starts from 0
its a question from "the design of unix operating system" of maurice j bach
id be glad if i get to know the answer quickly
:) (0 Replies)
brothers why inode index starts from 1 unlike array inex which starts from 0
its a question from the design of unix operating system of maurice j.bach
i need to know the answer urgently...someone help please (1 Reply)
hi folks
i am facing problom while trying to access sql variable as array index ina unix shell script....script goes as below..
#!/bin/ksh
MAX=3
for elem in alpha beeta gaama
do
arr=$elem
((x=x+1))
Done
SQL_SERVER='servername'
/apps/sun5/utils/sqsh -S $SQL_SERVER -U user -P pwd -b -h... (1 Reply)
I am beginner in awk
awk 'BEGIN{for(i=1;(getline<"opnoise")>0;i++) arr=$1}{print arr}'
In the above script, opnoise is a file, I am reading it into an array and then printing the value corresponding to index 20. Well this is not my real objective, but I have posted this example to describe... (19 Replies)
Hi,
I'm just trying to use a dynamic index for some array elements that I'm accessing within a loop. Specifically, I want to access an array at variable position $counter and then also at location $counter + 1 and $counter + 2 (the second and third array positions after it) but I keep getting... (0 Replies)
Hi!
Let's say I would like to convert "1", "2", "3" to "a", "b", "c" respectively. But if a record contains other number then return "X".
input:
1
2
3
4
output:
a
b
c
X
What is the syntax for:
if(array doesn't contain a particular index){
then print the value "X" instead} (12 Replies)
Can you search AWK array elements and return each index value for that element.
For example an array named car would have index make and element engine. I want to return all makes with engine size 1.6.
Array woulld look like this:
BMW 1.6
BMW 2.0
BMW 2.5
AUDI 1.8
AUDI 1.6
... (11 Replies)
I am trying to reformat the table by filling any missing rows. The final table will have consecutive IDs in the first column. My problem is the index of the associate array in the awk script.
infile:
S01 36407 53706 88540
S02 69343 87098 87316
S03 50133 59721 107923... (4 Replies)
I am trying to assign indexes to an associative array in a for loop but I have to use an eval command to make it work, this doesn't seem correct I don't have to do this with regular arrays
For example, the following assignment fails without the eval command:
#! /bin/bash
read -d "\0" -a... (19 Replies)
Hello,
I have a complicated situational find and replace that I wrote in bash because I didn't know how to do everything in awk. The code works but is very slow, as expected.
To create my modified file, I am looping through an array that was populated earlier and making some replacements at... (6 Replies)
Discussion started by: LMHmedchem
6 Replies
LEARN ABOUT DEBIAN
numsum
NUMSUM(1) User Contributed Perl Documentation NUMSUM(1)NAME
numsum - numsum program file
SYNOPSIS
numsum [-iIcdhrsvxy] <FILE>
| numsum [-iIcdhrsvxy] (Input on STDIN from pipeline.)
numsum [-iIcdhrsvxy] (Input on STDIN. Use Ctrl-D to stop.)
DESCRIPTION
numsum will take all the numbers on stdin and return the sum of those numbers. Currently it only processes the first number on each line.
Besides positive numbers, it also handles negative numbers and numbers with decimals.
OPTIONS -i Only return the integer portion of the final sum.
-I Only return the decimal portion of the final sum.
-c Print out the sum of each column.
-r Print out the sum of each row.
-x <n> Specify a comma seperated list of columns to print.
-y <n> Specify a comma seperated list of rows to print.
-s <string> Specify a string to use as a seperator for columns.
This defaults to be consecutive whitespace (s+).
-h Help: You're looking at it.
-V Increase verbosity.
-d Debug mode. For developers
-q Quiet mode, don't print any warnings.
EXAMPLES
Simply add up the numbers in a file.
$ numsum numbers.txt
4315
Enter your own numbers on STDIN. The last number is the answer.
$ numsum
4
21
98
100
223
Use it in a command pipeline.
$ ls -1s | grep .mp3 | numsum -c -x 5
72288
Add up the total byte count in a http log file.
$ cat access_log | awk {'print $10'} numsum
or
numsum -c -x 10 access_log
Add up the columns of numbers of a file.
$ cat columns
1 6 11 16 21
2 7 12 17 22
3 8 13 18 23
4 9 14 19 24
5 10 15 20 25
$ numsum -c columns
15 40 65 90 115
Add up the 1st, 2nd and 5th columns only.
$ numsum -c -x 1,2,5 columns
15 40 115
Add up the rows of numbers of a file.
$ numsum -r columns
55
60
65
70
75
Add up the 2nd and 4th rows.
$ numsum -r -y 2,4 columns
60
70
SEE ALSO numaverage(1), numbound(1), numinterval(1), numnormalize(1), numgrep(1), numprocess(1), numrandom(1), numrange(1), numround(1)COPYRIGHT
numsum is part of the num-utils package, which is copyrighted by Suso Banderas and released under the GPL license. Please read the COPYING
and LICENSE files that came with the num-utils package
Developers can read the GOALS file and contact me about providing
submitions or help for the project.
MORE INFO
More info on numsum can be found at:
http://suso.suso.org/programs/num-utils/
perl v5.10.1 2009-10-31 NUMSUM(1)