Append to the previous line for a match

Question

can I use sed or awk to append to the previous line if a match is found ?

I have a file which has the format :

          INT32         


        

Answer 1

[shyam@localhost ~]$ perl -lne 's/^/\n/ if $.>1 && /^\d+/; printf "%s",$_' appendDateText.txt

that will work

i/p:

06/12/2016 20:30 Test Test Test

TestTest

06/12/2019 20:30 abbs abcbcb abcbc

06/11/2016 20:30 test test

i123312331233123312331233123312331233123312331233Test

06/12/2016 20:30 abc

o/p:

06/12/2016 20:30 Test Test TestTestTest

06/12/2019 20:30 abbs abcbcb abcbc

06/11/2016 20:30 test ##testi123312331233123312331233123312331233123312331233Test