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Insert comma based on max number of column

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# 8  
Old 12-11-2008
Quote:
Originally Posted by vish_indian
This much also works

Code:
 awk 'BEGIN {
  FS=OFS=","
}
NR==FNR{
  nf=(NF>nf) ? NF : nf
  next
}
{NF=nf; print}'

$1=$1 is confusing
no, it's not confusing - it forces the current record field reevaluation.
Without it, the code does not work - at least under Sun/Solaris.
# 9  
Old 12-11-2008
Works in Linux Smilie, can't comment about Solaris

As per me it should have. What I understand from logic is that

Code:
 NR==FNR{
  nf=(NF>nf) ? NF : nf
  next
}

finds out the max value for NF for first input file.

When code is executed for second input file,
Code:
 {NF=nf; print}

it simply sets the NF value to max for each row and prints that row
Last edited by vish_indian; 12-11-2008 at 02:20 PM..
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