add space separated values and fields

[saikey0379]

• rdb -c json -fields key,size -o <output_path> <source_path>
• rdb -c ssv -fields key,size -regex -o <output_path> <source_path>

The examples for ssv result:

#% rdb -c ssv -fields key,size -regex FULL -o ~/Downloads/rdb.ssv ~/Downloads/dump-0001.rdb 
#% head ~/Downloads/rdb.ssv
8 CHEMXXXL:FULL:axxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:bxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:cxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:dxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:exxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:fxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:gxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:hxxxxx:1:1:1:1 132 
8 CHEMXXXL:FULL:ixxxxx:1:1:1:2 540 
8 CHEMXXXL:FULL:jxxxxx:1:1:1:1 132 
#% diff ~/Downloads/rdb.ssv ~/Downloads/rdb.ssv1 | grep "^>" | sort -nk5
> 0 string WORK:AREDIS:PID:cabcdef 335545
> 0 string WORK:AREDIS:PID:2abcdef 419431
> 0 string WORK:AREDIS:PID:3abcdef 419431
> 0 string WORK:AREDIS:PID:9abcdef 419431
> 0 string WORK:AREDIS:PID:cabcdef 419431
> 0 string WORK:AREDIS:PID:fabcdef 419431
#% diff ~/Downloads/rdb.ssv ~/Downloads/rdb.ssv1 | grep "^>" |awk '{sum+=$NF} END {print sum}'
2123412352