Code:
-> awk -F, '{$41=""}1' OFS="," file.csv
+ awk -F, {$41=""}1 OFS=, file.csv
awk: syntax error near line 1
awk: bailing out near line 1
-> nawk -F, '{$41=""}1' OFS="," file.csv
+ nawk -F, {$41=""}1 OFS=, file.csv
1,2,3,4,5,6,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
1,2,3,4,5,6,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
1,2,3,4,5,6,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
1,2,3,4,5,6,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,