Sorting a list

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# 1  
Old 09-01-2013
Sorting a list

I am trying to sort a list

If you walk through the list, every you have passed both website1 and website2 and get back to website1, the last lines should be collected into one line and the process should start again.

The following:

should become:

# 2  
Old 09-01-2013
I wouldn't call this sorting. But the following brute force awk script seems to do what your want:
awk '
NR == 1 {
        l1 = $0
        printf("%s", $0)
        combine = 1
l1 == $0 {
        printf("%s%s", combine ? ";" : "\n", $0)
        combine = 1
{       printf(";%s", $0)
        combine = 0
END {   print ""
}' file

As always, if you're using a Solaris/SunOS system, use /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk instead of awk.
This User Gave Thanks to Don Cragun For This Post:
# 3  
Old 09-02-2013

my @arr;
my $hit2=0;
 if(/website1/ && scalar @arr && $hit2){
	print join(";",@arr);
	print "\n";
 push @arr,$_;
print join(";",@arr) if scalar @arr;

Last edited by Don Cragun; 09-02-2013 at 05:49 AM.. Reason: Add CODE tags to make indentation visible.
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