$ ucondb [-s <server URL>] <command> ...
-s <server URL> -- URL of the UConDB server.
Env. variable UCONDB_SERVER_URL can be used.
Commands:
version -- print server version information
folders or ls -- list folders
objects or ls <folder> -- list objects in folder
versions or ls [-t] [-j] <folder> <object> -- list object versions
-j -- JSON output for "versions"
-t -- print Tv as date/time
get <folder> <object> [get options] -- get object version metadata or data
-m -- get metadata, print to stdout
-k <key> -- version key
-i <id> -- version id
-t <numeric> -- version validity time, default = now
-T <tag> -- tag
-R <numeric> -- version which existed as of record time, default = now
-o <output file> -- output for the version data BLOB, otherwise - stdout
put -u <username>:<password> [options] (<data file>|-) <folder> <object>
-k <key> -- version key
-t <numeric> -- version validity time, default = 0
-T <tag>[,...] -- tags