Search Results

awk 'BEGIN{FS=OFS=","} /^170/ {$1="ABCDEFG"}1' urfile

No, I think that rdcwayx was giving an example of how you might go about it using the echo as a sample for testing.

I think this is the most straight forward way:


sed 's/^[^,]*/aaaaaaaaaa/'...

sed -i s/^170[0-9][0-9][0-9][0-9][0-9][0-9][0-9]/<PATTERN>/g file.txt