Input filea is # delimited.
$ cat filea
a#b#c#0
d#e#f#1
g#h#i#1
Purpose:
Remove the 2nd and 3rd column from filea
$ awk 'BEGIN{FS=OFS="#"}{$2=$3=""}{print}' filea
a###0
d###1
g###1
$ awk 'BEGIN{FS=OFS="#"}{$2=$3="";gsub(FS"+",FS)}1' filea
a#0
d#1
g#1
As I told earlier , the 1 in the above code is similar to {print $0}.
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