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Append column two if line one matches

Append column two if line one matches

Append column two if line one matches

(OP)
Sample file:
host1 peach
host1 cherry
host2 pear
host3 apple
host4 orange
host4 banana
host4 plum

Desired output:
host1 peach cherry
host2 pear
host3 apple
host4 orange banana plum

Tried this but can't get it to work.

CODE

awk -F' * *' '{a[$1 " " $2]=a[$1 " " $2] " " $3} END {for (k in a) {print k a[k]}}' 

RE: Append column two if line one matches

Hi

Why setting a field separator ?

Anyway, the problem is that you seem to count 3 fields, while with or without setting the field separator, you still have only 2 :

CODE

awk '{a[$1]=a[$1] " " $2} END {for (k in a) {print k a[k]}}' 
Tested with gawk, mawk and original awk.

Feherke.
feherke.ga

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