[PR] Compare empty string for command line extract save.
[PR] Compare empty string for command line extract save.

MSOpenTech/redis,MSOpenTech/redis,ttuna/msot-redis,ttuna/msot-redis,MSOpenTech/redis,ttuna/msot-redis,ttuna/msot-redis,ttuna/msot-redis,MSOpenTech/redis,MSOpenTech/redis