Add --version support for redis-check-aof

Let us see which version of redis this tool is part of.
Similarly to redis-cli, redis-benchmark and redis-check-rdb

src/redis-check-aof.c

@@ -519,6 +519,20 @@ void checkOldStyleAof(char *filepath, int fix, int preamble) {
     }
 }
 
+static sds checkAofVersion(void) {
+    sds version;
+    version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
+
+    /* Add git commit and working tree status when available */
+    if (strtoll(redisGitSHA1(),NULL,16)) {
+        version = sdscatprintf(version, " (git:%s", redisGitSHA1());
+        if (strtoll(redisGitDirty(),NULL,10))
+            version = sdscatprintf(version, "-dirty");
+        version = sdscat(version, ")");
+    }
+    return version;
+}
+
 int redis_check_aof_main(int argc, char **argv) {
     char *filepath;
     char temp_filepath[PATH_MAX + 1];
@@ -528,6 +542,13 @@ int redis_check_aof_main(int argc, char **argv) {
     if (argc < 2) {
         goto invalid_args;
     } else if (argc == 2) {
+        if (!strcmp(argv[1], "-v") || !strcmp(argv[1], "--version")) {
+            sds version = checkAofVersion();
+            printf("redis-check-aof %s\n", version);
+            sdsfree(version);
+            exit(0);
+        }
+
         filepath = argv[1];
     } else if (argc == 3) {
         if (!strcmp(argv[1], "--fix")) {