Help to know the various possible uses of awk arrays
Hi to all,
I write this time to ask for different syntax or ways of arrays within awk and uses.
Since I don't know how actually could work and the real potencial of awk arrays, I look for a proactive reply/help in order to get
more information than it seems I'm trying to get.
I think I have seen before in threads in this forum, solutions with different syntax used to load arrays, obviously
depending on the input file and what you want to do with it, the uses and syntax might vary.
*I show below only examples rescued from what I think I've seen, so some may have incorrect syntax.
Summary: 1-) It would be fine the person who respond, could say which of those examples above has correct syntax, the meaning of expression
and what others possible syntax exist when we want to load an array from input file. 2-) After that, I'll try to play around/evaluate different syntax you can shared(multi dimensional too, if it possible) and test to see their
output (learning of that) when I apply them to a sample file like I put below. 3-) If you want to share some examples with arrays with the below input file, it would be great and very appreciated (difference/multiplication between fields, totals, etc)!!!.
PS. It is not about a homework, it's about doubts that I have regarding handling arrays in awk
Hi All,
I have been working on awk and arrays. I have this small script:
cat maillog*|awk -F: '$2=="SMTP-Accept" && $5~/string/ {lastdate=substr($1,1,8); internaluser=$5; v++} END {for (j in v) {print lastdate, v, j}'| sort>> mail.list
This gives me the number of mails users are getting. ... (1 Reply)
Been struggling with a problem, I have been trying to do this in awk, but am unable to figure this out, I think arrays have to be used, but unsure how to accomplish this.
I have a input file that looks like this:
141;ny;y;g
789;ct;e;e
23;ny;n;u
45;nj;e;u
216;ny;y;u
7;ny;e;e
1456;ny;e;g... (3 Replies)
Guys,
OK so i have been trying figure this all all day, i guess its a pretty easy way to do it.
Right, so i have to column of data which i have gotten from one huge piece of data. What i would like to do is to put both of these into one array using awk. Is this possible??
If so could... (1 Reply)
Hi, I've written the following code to manipulate the first 40 lines of a data file into my desired order:
#!/bin/awk -f
{ if (NR<=(4)){
a=a$0" "}
else { if ((NR >= (5)) && (NR <= (13))) {
b=b$0" " }
else {if ((NR >= (14)) && (NR <= (25))){
c=c$0" "}
... (5 Replies)
Hi,
I have spent the afternoon trawling Google, Unix.com and Unix in a Nutshell for information on how awk arrays work, and I'm not really getting too far.
I ahve a batch of code that I am pretty sure can be better managed using awk, but I'm not sure how to use awk arrays to do what I'm... (1 Reply)
Hi,
I have the following data in a file for example:
Name="Fred","Bob","Peterson","Susan","Weseley"
Age="24","30","28","23","45"
Study="English","Engineering","Physics","Maths","Psychology"
Code="0","0","1","1","0"
Name="Fred2","Bob2","Peterson2","Susan2","Weseley2"... (14 Replies)
Hi
Can someone please explain the logic of awk arrays. I have been doing some reading but I dont understand this:
#!/usr/bin/gawk -f
{
arr++;
}
end
{
for(i in arr)
{
print arr,i
}
}
As I understand arr refs the arrays index, so while $2 is a string that cant... (2 Replies)
Hi, buddies
I am new to shell scripting and trying to solve a problem. I read about arrays in awk that they are quite powerful and are associative in nature.
Awk Gurus Please help!
I have a file:
Id1 pp1 0t4 pp8 xy2
Id43 009y black
Id6 red xy2
Id12 new pp1 black
I have... (5 Replies)
I'm a little stuck and would be grateful of some advice!
I have three files, two of which contain reference data that I want to add to a line of output in the third file. I can't seem to get awk to print array contents as I would expect.
The input files are:
# Input file
AAA,OAA,0313... (2 Replies)
Discussion started by: maccas17
2 Replies
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