diff --git a/src/common/args.cpp b/src/common/args.cpp
index cdab8f2..6e1aa85 100644
--- a/src/common/args.cpp
+++ b/src/common/args.cpp
@@ -246,11 +246,22 @@ bool parse_args(int argc, char* argv[]) {
       }
     }
     else if(opt == args_chr[ARG_GPU]) {
-      args.gpu_idx = getarg_int(optarg);
-      if(errn != 0) {
-        printErr("Option %s: %s", args_str[ARG_GPU], getarg_error());
-        args.help_flag  = true;
-        return false;
+      // Check for "a" option
+      if(strcmp(optarg, "a") == 0) {
+        args.gpu_idx = -1;
+      }
+      else {
+        args.gpu_idx = getarg_int(optarg);
+        if(errn != 0) {
+          printErr("Option %s: %s", args_str[ARG_GPU], getarg_error());
+          args.help_flag  = true;
+          return false;
+        }
+        if(args.gpu_idx < 0) {
+          printErr("Specified GPU index is out of range: %d. ", args.gpu_idx);
+          printf("Run gpufetch with the --%s option to check out valid GPU indexes\n", args_str[ARG_LIST]);
+          return false;
+        }
       }
     }
     else if(opt == args_chr[ARG_LIST]) {
diff --git a/src/common/main.cpp b/src/common/main.cpp
index f7c2506..84ad9d5 100644
--- a/src/common/main.cpp
+++ b/src/common/main.cpp
@@ -21,7 +21,7 @@ void print_help(char *argv[]) {
   printf("Options: \n");
   printf("  -%c, --%s %*s Set the color scheme (by default, gpufetch uses the system color scheme) See COLORS section for a more detailed explanation\n", c[ARG_COLOR], t[ARG_COLOR], (int) (max_len-strlen(t[ARG_COLOR])), "");
   printf("  -%c, --%s %*s List the available GPUs in the system\n", c[ARG_LIST], t[ARG_LIST], (int) (max_len-strlen(t[ARG_LIST])), "");
-  printf("  -%c, --%s %*s Select the GPU to use (default: 0)\n", c[ARG_GPU], t[ARG_GPU], (int) (max_len-strlen(t[ARG_GPU])), "");
+  printf("  -%c, --%s %*s Select the GPU to print (default: 0). Use 'a' to print all GPUs\n", c[ARG_GPU], t[ARG_GPU], (int) (max_len-strlen(t[ARG_GPU])), "");
   printf("      --%s %*s Show the short version of the logo\n", t[ARG_LOGO_SHORT], (int) (max_len-strlen(t[ARG_LOGO_SHORT])), "");
   printf("      --%s %*s Show the long version of the logo\n", t[ARG_LOGO_LONG], (int) (max_len-strlen(t[ARG_LOGO_LONG])), "");
   printf("  -%c, --%s %*s Enable verbose output\n", c[ARG_VERBOSE], t[ARG_VERBOSE], (int) (max_len-strlen(t[ARG_VERBOSE])), "");
@@ -72,9 +72,6 @@ int main(int argc, char* argv[]) {
   set_log_level(verbose_enabled());
 
   int idx = get_gpu_idx();
-  if(!gpu_idx_valid(idx)) {
-    return EXIT_FAILURE;
-  }
 
   struct gpu_list* list = get_gpu_list();
   if(list_gpus()) {
@@ -91,17 +88,33 @@ int main(int argc, char* argv[]) {
     return EXIT_FAILURE;
   }
 
-  struct gpu_info* gpu = get_gpu_info(list, idx);
-  if(gpu == NULL)
-    return EXIT_FAILURE;
+  int first_idx, last_idx;
+  if(idx == -1) {
+    first_idx = 0;
+    last_idx = get_num_gpus_available(list);
+  }
+  else {
+    first_idx = idx;
+    last_idx = idx+1;
+  }
 
-  printf("[NOTE]: gpufetch is in beta. The provided information may be incomplete or wrong.\n\
+  bool print_failed = false;
+  struct gpu_info* gpu = NULL;
+  for(int gpu_idx = first_idx; !print_failed && gpu_idx < last_idx; gpu_idx++) {
+    gpu = get_gpu_info(list, gpu_idx);
+    if(gpu == NULL)
+      return EXIT_FAILURE;
+
+    printf("[NOTE]: gpufetch is in beta. The provided information may be incomplete or wrong.\n\
 If you want to help to improve gpufetch, please compare the output of the program\n\
 with a reliable source which you know is right (e.g, techpowerup.com) and report\n\
 any inconsistencies to https://github.com/Dr-Noob/gpufetch/issues\n");
 
-  if(print_gpufetch(gpu, get_style(), get_colors()))
-    return EXIT_SUCCESS;
-  else
-    return EXIT_FAILURE;
+    if(!print_gpufetch(gpu, get_style(), get_colors())) {
+      print_failed = true;
+    }
+  }
+
+  if(print_failed) return EXIT_SUCCESS;
+  else return EXIT_FAILURE;
 }
diff --git a/src/common/master.cpp b/src/common/master.cpp
index 2a65a2d..a5694f3 100644
--- a/src/common/master.cpp
+++ b/src/common/master.cpp
@@ -81,15 +81,6 @@ int get_num_gpus_available(struct gpu_list* list) {
   return list->num_gpus;
 }
 
-bool gpu_idx_valid(int idx) {
-  if(idx < 0) {
-    printErr("Specified GPU index is out of range: %d. ", idx);
-    printf("Run gpufetch with the --%s option to check out valid GPU indexes\n", args_str[ARG_LIST]);
-    return false;
-  }
-  return true;
-}
-
 struct gpu_info* get_gpu_info(struct gpu_list* list, int idx) {
   if(idx >= list->num_gpus || idx < 0) {
     printErr("Specified GPU index is out of range: %d", idx);
diff --git a/src/common/master.hpp b/src/common/master.hpp
index 8de7b3a..ad710c5 100644
--- a/src/common/master.hpp
+++ b/src/common/master.hpp
@@ -9,7 +9,6 @@ struct gpu_list* get_gpu_list();
 bool print_gpus_list(struct gpu_list* list);
 int get_num_gpus_available(struct gpu_list* list);
 void print_enabled_backends();
-bool gpu_idx_valid(int idx);
 struct gpu_info* get_gpu_info(struct gpu_list* list, int idx);
 
 #endif