?
Solved

awk string parsing

Posted on 2001-08-09
4
Medium Priority
?
280 Views
Last Modified: 2010-04-21
I have an output that looks like this,

         1  2  3  4
5  6  7  8  9 10 11

Now I need to print every string ("1"..."11") plus some extra information. I tried a script like

BEGIN {FS = " "}
{
for (i = 1; i <= NF; i++)
{
   if ($i == myvar)
       printf("%s %s", $i, mystr)
   else
       printf("%s ", $i)
   if (i == NF)
       printf("\n")
}
}

This parses the first string("1") as appearing in column one, but it should appear in column 4, i.e the spaces in columns must be printed.

0
Comment
Question by:eing9607
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 51

Expert Comment

by:ahoffmann
ID: 6371825
do you mean the leading space left of 1 ?
And how about all the other leading spaces?
Then awk is probably not the rigth choice for that, but can be done too.
Could you please give an example (not phrases) how the output shoul look like.

Also, what does you program do ? the awk-variables myvar and mystr never get set, so they are always the empty string or 0 (depending on the context).

0
 

Author Comment

by:eing9607
ID: 6371928
I haven't included the setting of myvar and mystr here, but I do set them in my awk script.

Well I kind of solved the problem myself. I use the split function, n = ($0, arr, " "), function to retrieve the number of elements on each line. Then I can print each entry stored in arr[1]..arr[n]. By doing so I can (pre)format the output the way I want.

Sorry, when I asked the question I wasn't aware of the split function.    
0
 
LVL 21

Expert Comment

by:tfewster
ID: 7774718
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation for this question in the Cleanup topic area as follows:
- PAQ & refund points

Please leave any comments here within the next 7 days

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

tfewster (I don't work here, I'm just an Expert :-)
0
 

Accepted Solution

by:
SpideyMod earned 0 total points
ID: 7864314
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
0

Featured Post

Get real performance insights from real users

Key features:
- Total Pages Views and Load times
- Top Pages Viewed and Load Times
- Real Time Site Page Build Performance
- Users’ Browser and Platform Performance
- Geographic User Breakdown
- And more

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hello fellow BSD lovers, I've created a patch process for patching openjdk6 for BSD (FreeBSD specifically), although I tried to keep all BSD versions in mind when creating my patch. Welcome to OpenJDK6 on BSD First let me start with a little …
Let's say you need to move the data of a file system from one partition to another. This generally involves dismounting the file system, backing it up to tapes, and restoring it to a new partition. You may also copy the file system from one place to…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Suggested Courses
Course of the Month13 days, 17 hours left to enroll

801 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question