MEXISTS Redis Lua script

mexists.lua

$ cat /tmp/mexists.lua

local retval,j
retval={}
for i=1,#KEYS do
   table.insert(retval,redis.call('exists',KEYS[i]))
end
return retval

$ ./redis-cli --eval /tmp/mexists.lua foo bar key0
1) (integer) 0
2) (integer) 0
3) (integer) 1