Solved

awk string parsing

Posted on 2001-08-09
4
259 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
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 20

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

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

In tuning file systems on the Solaris Operating System, changing some parameters of a file system usually destroys the data on it. For instance, changing the cache segment block size in the volume of a T3 requires that you delete the existing volu…
This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
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 navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…

803 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