[Sunhelp] Adding a "*" character to specific lines in a data file

[Walter Krumshyn]

The following perl script would to the trick...

#!/usr/bin/perl

while(<>) {
        if (!($counter++ % 4)) {
                printf "*";
        }
        printf "$_";
}

Regards,

Walter


Sampath K Kari wrote:
> 
> Dear experts,
> 
> I am very beginner in scripting.
> 
> Need ur help for a script that could do below:
> 
> Input data file is a flat text file containing data in columns delimited
> by space.
> 
> I need to insert a "*" character in the beginning of every 4th line
> starting from line 1 in a file.  That means I need to insert in lines 1,
> 5, 9,13, 17,  etc,, till the end of the file.
> 
> Thanks in advance.
> 
> -Sampath
> 
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