sed move to prev line if match

Eddie Adams · 01-31-2010, 04:32 AM

file:
12312
desc: bleh...
9938
desc: blah...
iueud
desc: bloh...

desired result:
12312, desc: bleh...
9938, desc: blah...
iueud, desc: bloh...

ghostdog74 · 01-31-2010, 05:05 AM

Code:

$ awk 'ORS=(NR%2)?",":"\n"' file
12312,desc: bleh...
9938,desc: blah...
iueud,desc: bloh...

Eddie Adams · 01-31-2010, 06:20 AM

Thanks!

Ok that fixes it for a format where the lines are always paired. That is not always...

file:
12312
desc: bleh...
9938
desc: blah...
iueud
desc: bloh...
desc: blih...
desc: bluh...
9912
desc: blah...

So it must look at the first characters [desc:] and only these lines must be moved to the previous line

desired output:
12312 desc: bleh...
9938 desc: blah...
iueud desc: bloh...
desc: blih...
desc: bluh...
9912 desc: blah...

ghostdog74 · 01-31-2010, 06:28 AM

then why don't show your actual data structure in the first place?

Code:

awk '!/desc:/{
 printf "%s ",$0
 getline
 printf "%s \n",$0
}
/desc/{print}' file

Eddie Adams · 01-31-2010, 06:42 AM

I presumed the initial answer would check the first characters of the line. Well its working now. Thanks again.