Index: trunk/ippTools/src/sctool.c
===================================================================
--- trunk/ippTools/src/sctool.c	(revision 33720)
+++ trunk/ippTools/src/sctool.c	(revision 33744)
@@ -35,4 +35,5 @@
 
 static bool defineskycellsMode(pxConfig *config);
+static bool listMode(pxConfig *config);
 
 # define MODECASE(caseName, func) \
@@ -53,5 +54,6 @@
 
     switch (config->mode) {
-        MODECASE(SCTOOL_MODE_DEFINESKYCELLS,         defineskycellsMode);
+        MODECASE(SCTOOL_MODE_DEFINESKYCELLS,    defineskycellsMode);
+        MODECASE(SCTOOL_MODE_LIST,              listMode);
         default:
             psAbort("invalid option (this should not happen)");
@@ -131,2 +133,72 @@
     return true;
 }
+static bool listMode(pxConfig *config)
+{
+    PS_ASSERT_PTR_NON_NULL(config, NULL);
+
+    PXOPT_LOOKUP_U64(limit, config->args, "-limit", false, false);
+    PXOPT_LOOKUP_BOOL(simple, config->args, "-simple", false);
+    psMetadata *where = psMetadataAlloc();
+
+    PXOPT_COPY_STR(config->args, where, "-skycell_id", "skycell.skycell_id", "LIKE");
+    PXOPT_COPY_STR(config->args, where, "-tess_id", "skycell.tess_id", "LIKE");
+    PXOPT_COPY_F32(config->args, where, "-ra_min", "skycell.radeg", ">=");
+    PXOPT_COPY_F32(config->args, where, "-dec_min", "skycell.decdeg", ">=");
+    PXOPT_COPY_F32(config->args, where, "-ra_max", "skycell.radeg", "<");
+    PXOPT_COPY_F32(config->args, where, "-dec_max", "skycell.decdeg", "<");
+    PXOPT_COPY_F32(config->args, where, "-glong_min", "skycell.glong", ">=");
+    PXOPT_COPY_F32(config->args, where, "-glat_min", "skycell.glat", ">=");
+    PXOPT_COPY_F32(config->args, where, "-glong_max", "skycell.glong", "<");
+    PXOPT_COPY_F32(config->args, where, "-glat_max", "skycell.glat", "<");
+
+    psString query = pxDataGet("sctool_list.sql");
+    if (!query) {
+        psError(PXTOOLS_ERR_SYS, false, "failed to retreive SQL statement");
+        return false;
+    }
+
+    if (!psListLength(where->list)) {
+        psError(PXTOOLS_ERR_CONFIG, false, "search paramters are required\n");
+        psFree(where);
+        return false;
+    }
+    psString whereClause = psDBGenerateWhereConditionSQL(where, NULL);
+    psStringAppend(&query, " WHERE %s", whereClause);
+    psFree(whereClause);
+
+    if (limit) {
+        psString limitString = psDBGenerateLimitSQL(limit);
+        psStringAppend(&query, " %s", limitString);
+        psFree(limitString);
+    }
+
+    if (!p_psDBRunQuery(config->dbh, query)) {
+        psError(PS_ERR_UNKNOWN, false, "database error");
+        psFree(query);
+        return false;
+    }
+    psFree(query);
+
+    psArray *output = p_psDBFetchResult(config->dbh);
+    if (!output) {
+        psError(PS_ERR_UNKNOWN, false, "database error");
+        return false;
+    }
+
+    if (!psArrayLength(output)) {
+        psTrace("sctool", PS_LOG_INFO, "no rows found");
+        psFree(output);
+        return true;
+    }
+
+    if (!ippdbPrintMetadatas(stdout, output, "skycell", !simple)) {
+        psError(PS_ERR_UNKNOWN, false, "failed to print array");
+        psFree(output);
+        return false;
+    }
+
+    psFree(output);
+
+
+    return true;
+}