merging of 2 consecutive lines in a file for a specific pattern

Shell Programming and Scripting
1

Hi ,

I'm looking for a way to merge two lines only for a given pattern / condition.

Input : 


abcd/dad +   -49.201   2.09        -49.5       34     ewrew  rewtre *
fdsgfds/dsgf/sdfdsfasdd +
             -4.30   0.62        -49.5       45     sdfdsf cvbbv *
sdfds/retret/asdsaddsa +
             -48.42   5.91       -4.86        21     fgjh   dfgfh *
sdfds/tryr + -47.00   9.48       -48.5        43     gfhh   bmbfd *

Output :

abcd/dad +   -49.201   2.09        -49.5       34     ewrew  rewtre *
fdsgfds/dsgf/sdfdsfasdd +  -4.30   0.62        -49.5       45     sdfdsf cvbbv *
sdfds/retret/asdsaddsa +   -48.42   5.91       -4.86        21     fgjh   dfgfh *
sdfds/tryr + -47.00   9.48       -48.5        43     gfhh   bmbfd *

File contains ~20K lines. Here the merging of 2 lines happen only when there is no other character after "+".

Thanks for any help

2

thru sed..

sed '/+$/{N;s/\n */ /}' inputfile > outfile