Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Could someone give me an example of awk accessing array defined in Korn Shell?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Could someone give me an example of awk accessing array defined in Korn Shell?
# 1  
Old 06-18-2008
Could someone give me an example of awk accessing array defined in Korn Shell?
As per title and much apprecieated!
# 2  
Old 06-18-2008
Please modify the example

awk '{
key=substr($0,1,10)
key1=substr($0,1,21)
if(arr[key])
{

arr[key]=1
}
else
{
arr[key]=$0
}
}
END {for (i in arr) {print arr[i]} } ' file_name
# 3  
Old 06-19-2008
Quote:
Originally Posted by dhanamurthy
Please modify the example

awk '{
key=substr($0,1,10)
key1=substr($0,1,21)
if(arr[key])
{

arr[key]=1
}
else
{
arr[key]=$0
}
}
END {for (i in arr) {print arr[i]} } ' file_name
dhanamurthy, thank you for your reply, but could you please specify how the array name "arr" was defined outside of awk snippet (in shell)?

and the $0 means every line from the file? so your statement key=substr($0,1,10) means the 1-10 characters of the lines in the file, but you use it like this arr[key], sorry I do not understand.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

'*' vs. '@' in Korn Shell Array Variables

In order to use the shellcurses functions described at: Shell Curses function library I am learning about ksh, which has arrays. My trusty Kochan & Wood book says that for any Korn Shell array AR : ${AR } expands to all the defined array elements, and ${#AR } expands to the number... (3 Replies)
Discussion started by: Clovis_Sangrail
3 Replies

2. Shell Programming and Scripting

Korn Shell Array maximum value less than other value

I have a text file with several key words that I am trying to isolate. I have grepped for the unknowns in the text file, but each unknown has a corresponding location. I have created an array that holds all the unknowns and another array that holds all of the locations and compares them based on... (12 Replies)
Discussion started by: ther2000
12 Replies

3. Shell Programming and Scripting

need help with korn shell array

I have a korn shell script that reads a file with just one column in the file. If the file has more than 5 entries it is split using split -5. This means that is we have 15 entries I will end up with 3 files with 5 entries/lines in each and if I have 23 entries I will end up with 5 files with the... (2 Replies)
Discussion started by: kieranfoley
2 Replies

4. UNIX for Advanced & Expert Users

Accessing PL/SQL OUT variables in Korn Shell Script

Hello All, I was just wondering if there is any direct way to access PL/SQL OUT variables from Korn Shell Script. I could already figure out how to return a single value back from PL/SQL to Shell Script (using bind variable). But, what if we want to return multiple values? One option I... (4 Replies)
Discussion started by: bright_future
4 Replies

5. Shell Programming and Scripting

Accessing awk array from shell

Hi, i want awk to read a file and place it's content into two arrays. When trying to read these arrays with a "for a in ${source_path} "-Loop it gives the right result. But when trying to access directly (/bin/echo ${source_path}) it doesn't work. I read "all "the awk threads in this forum and... (6 Replies)
Discussion started by: bateman23
6 Replies

6. Shell Programming and Scripting

Accessing single elements of a awk array in END

How do I access one of the indices in array tst with the code below? tst=sprintf("%5.2f",Car / 12) When I scan thru the array with for ( i in tst ) { print i,tst } I get the output of: vec-7 144 But when I try this in the END print tst It looks like it's not set. What am... (6 Replies)
Discussion started by: timj123
6 Replies

7. Solaris

i cannot give array declaration in shell script

Dear all, i m unable to give array decalartion in solaris Operating system shell script and script was so.sh declare -a bull for i in 1 2 3 4 5 6 7 8 9 do bull=$i echo "${bull}" done it is throwing an error called so.sh: declare: not found so.sh: bull=1: not... (20 Replies)
Discussion started by: naree
20 Replies

8. Shell Programming and Scripting

Return an array of strings from user defined function in awk

Hello Friends, Is it possible to return an array from a user defined function in awk ? example: gawk ' BEGIN{} { catch_line = my_function(i) print catch_line print catch_line print catch_line } function my_function(i) { print "echo" line= "awk" line= "gawk"... (2 Replies)
Discussion started by: user_prady
2 Replies

9. Shell Programming and Scripting

korn shell array?

I read it is possible to provide values for an array with the -A option to the read statement; however, I have not been able to get this to work. When I execute a script with the -A option to the read statement, the shell complains that it is an illegal option. If this works, can someone provide... (5 Replies)
Discussion started by: cstovall
5 Replies

10. UNIX for Advanced & Expert Users

Oracle To Korn Shell Array

I'm attempting to populate an array in ksh using the following command: set -A $(SELECT_INVOICE | sed '/^$/d') SELECT_INVOICE is a function that executes the SQL query. Problem: Some of the invoice numbers have alpha characters with spaces(example: OVEN MICRO). The Korn shell is treating... (1 Reply)
Discussion started by: kdst
1 Replies
Login or Register to Ask a Question