#DFIR tip:
When dealing with CSV files, you can usually avoid Excel & custom scripts when just filtering for particular columns:
$ echo "a,b,c,d,e" | cut -d , -f 1,2
a,b
$ echo "a,b,c,d,e" | cut -d , -f 1-3,5
a,b,c,e
$ echo "a,b,c,d,e" | cut -d , -f 3-
c,d,e
16
28
2
117
That's elegant and terse. Thanks!
Awk not quite so terse but can do more imho. :-)
echo "a,b,c,d,e" | awk -F, '{print $1 "," $2}'
echo "a,b,c,d,e" | awk -F, '{print $1 "," $2 "," $3 "," $5}'
echo "a,b,c,d,e" | awk -F, '{ {for(i=3; i<=(NF-1); i++) {printf("%s,",$i)}} print $NF}'
2
1
awk is particularly useful in this context for selecting on columns:
awk -F, '$3 == "192.168.1.1"' input.csv
awk -F, '$3 ~ /^192.168./' input.csv
1
1
8