19   ret.append(ldb_options.print_help_header);  in PrintHelp()
20   ret.append("\n\n");  in PrintHelp()
21   ret.append("commands MUST specify --" + LDBCommand::ARG_DB +  in PrintHelp()
23   ret.append("\n");  in PrintHelp()
24   ret.append("commands can optionally specify --" + LDBCommand::ARG_ENV_URI +  in PrintHelp()
26   ret.append(  in PrintHelp()
29   ret.append("  --" + LDBCommand::ARG_KEY_HEX +  in PrintHelp()
31   ret.append("  --" + LDBCommand::ARG_VALUE_HEX +  in PrintHelp()
33   ret.append("  --" + LDBCommand::ARG_HEX +  in PrintHelp()
35   ret.append("\n");  in PrintHelp()
37   ret.append(  in PrintHelp()
40   ret.append(  in PrintHelp()
44   ret.append("  --" + LDBCommand::ARG_TTL +  in PrintHelp()
47   ret.append("  --" + LDBCommand::ARG_TRY_LOAD_OPTIONS +  in PrintHelp()
49   ret.append("  --" + LDBCommand::ARG_IGNORE_UNKNOWN_OPTIONS +  in PrintHelp()
51   ret.append("  --" + LDBCommand::ARG_BLOOM_BITS + "=<int,e.g.:14>\n");  in PrintHelp()
52   ret.append("  --" + LDBCommand::ARG_FIX_PREFIX_LEN + "=<int,e.g.:14>\n");  in PrintHelp()
53   ret.append("  --" + LDBCommand::ARG_COMPRESSION_TYPE +  in PrintHelp()
55   ret.append("  --" + LDBCommand::ARG_COMPRESSION_MAX_DICT_BYTES +  in PrintHelp()
57   ret.append("  --" + LDBCommand::ARG_BLOCK_SIZE + "=<block_size_in_bytes>\n");  in PrintHelp()
58   ret.append("  --" + LDBCommand::ARG_AUTO_COMPACTION + "=<true|false>\n");  in PrintHelp()
59   ret.append("  --" + LDBCommand::ARG_DB_WRITE_BUFFER_SIZE +  in PrintHelp()
61   ret.append("  --" + LDBCommand::ARG_WRITE_BUFFER_SIZE +  in PrintHelp()
63   ret.append("  --" + LDBCommand::ARG_FILE_SIZE + "=<int,e.g.:2097152>\n");  in PrintHelp()
65   ret.append("\n\n");  in PrintHelp()
66   ret.append("Data Access Commands:\n");  in PrintHelp()
78   ret.append("\n\n");  in PrintHelp()
79   ret.append("Admin Commands:\n");  in PrintHelp()