Kinda terse, yeah.. Here's what I hope you can help me with. I have a series of hundreds of small (10-15 line) text files.
I need to check line 7. If it does NOT begin with B, insert a newline. If it does begin with B, don't do anything. awk "NR==7 && substr($0,1,1)!="B" {print""} " %1.b was suggested (elsewhere) but that duplicates line 7 instead of just stuffing in a newline. I've tried multiple variations on sed "7,1 s/" to no avail. Help me, Obi Wan-Kenobi, you're my only hope. Thank you kindly.