Breaking up at the second occurrence


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# 1  
Breaking up at the second occurrence

hi,

My input is:
Code:
123
1234|123|123|123
123|123|456
123|123|12
12

Expected output is:
Code:
123
1234|123
123|123
123|123
456
123|123
12
12

The logic is breaking up at the 2nd occurerence of "|" delimiter and making remaining as a new line.

And also,if input contains more than 3 | delimiter then:
Code:
123|123|123|123|123

, output should be:
Code:
123|123
123|123
123

How we can do this in awk?
Thanks
# 2  
One solution:

Code:
awk -F \| '
    NF %2 {
        for( i = 1; i < NF-1; i += 2 )
            printf( "%s|%s\n", $(i), $(i+1) );
        printf( "%s\n", $(i) );
        next;
    }

    {
        for( i = 1; i < NF; i += 2 )
            printf( "%s|%s\n", $(i), $(i+1) );

    }
' input-file

Might be able to shirink it if I gave it some thought, but off the top of my head it does work.

---------- Post updated at 22:57 ---------- Previous update was at 22:54 ----------

A more concise approach:

Code:
awk -F \| '
    {
        for( i = 1; i < NF - (NF%2); i += 2 )
            printf( "%s|%s\n", $(i), $(i+1) );
        if( NF % 2 )
            printf( "%s\n", $(i) );
    }
' input-file

This User Gave Thanks to agama For This Post:
 

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