Hi,

I have a file of the format:

start: 1001
12
32
34
35
36

start: 1002
asd
we
23

I want to format this output to read:
start: 1001, 12, 32, 34, 35, 36
start: 1002, asd, we, 23

..so in other words remove line feeds and use the keywords start,a dn a blank line to delimit the start and end of a record (as you can see these records are of variable length. So I know I can remove line feeds with things like tr (tr -d '\n' < file.txt), but can't work out how I can get this to work with record delimiters. I tried stuff in awk and sed but can't work this one out - any ideas?

nawk 'BEGIN{RS=FS="";OFS=","} $1=$1' file