UNIX Command Line

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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