X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/e0e1c195202dd74ab22554dd4293672cc95368ee..08f55b786b58b3e0f8310e02683a0e1761c5b6bf:/src/redis-cli.c

diff --git a/src/redis-cli.c b/src/redis-cli.c
index 3a6b0a90..761c025e 100644
--- a/src/redis-cli.c
+++ b/src/redis-cli.c
@@ -251,12 +251,32 @@ static int selectDb(int fd) {
     return 0;
 }
 
+static void showInteractiveHelp(void) {
+    printf(
+    "\n"
+    "Welcome to redis-cli " REDIS_VERSION "!\n"
+    "Just type any valid Redis command to see a pretty printed output.\n"
+    "\n"
+    "It is possible to quote strings, like in:\n"
+    "  set \"my key\" \"some string \\xff\\n\"\n"
+    "\n"
+    "You can find a list of valid Redis commands at\n"
+    "  http://code.google.com/p/redis/wiki/CommandReference\n"
+    "\n"
+    "Note: redis-cli supports line editing, use up/down arrows for history."
+    "\n\n");
+}
+
 static int cliSendCommand(int argc, char **argv, int repeat) {
     char *command = argv[0];
     int fd, j, retval = 0;
     sds cmd;
 
     config.raw_output = !strcasecmp(command,"info");
+    if (!strcasecmp(command,"help")) {
+        showInteractiveHelp();
+        return 0;
+    }
     if (!strcasecmp(command,"shutdown")) config.shutdown = 1;
     if (!strcasecmp(command,"monitor")) config.monitor_mode = 1;
     if (!strcasecmp(command,"subscribe") ||
@@ -478,10 +498,16 @@ int main(int argc, char **argv) {
 
     if (config.auth != NULL) {
         char *authargv[2];
+        int dbnum = config.dbnum;
 
+        /* We need to save the real configured database number and set it to
+         * zero here, otherwise cliSendCommand() will try to perform the
+         * SELECT command before the authentication, and it will fail. */
+        config.dbnum = 0;
         authargv[0] = "AUTH";
         authargv[1] = config.auth;
         cliSendCommand(2, convertToSds(2, authargv), 1);
+        config.dbnum = dbnum; /* restore the right DB number */
     }
 
     /* Start interactive mode when no command is provided */