added hexcat

hexcat.c

@@ -0,0 +1,44 @@
+#!/bin/tcc -run
+
+/**
+ * hex cat: dump escape sequences received as ASCII and numbers
+ * Ondřej Hruška, Aug 2017
+ * MIT license
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <termios.h>
+#include <signal.h>
+
+void signal_handler(int sig);
+
+struct termios old;
+
+int main(void)
+{
+  struct termios new;
+  char c;
+  signal(SIGTERM, signal_handler);
+  signal(SIGINT, signal_handler);
+
+  tcgetattr(TCSANOW, &old);
+  new = old;
+  new.c_lflag &= (~ECHO & ~ICANON);
+  tcsetattr(0, TCSANOW, &new);
+  tcsetattr(0, TCSANOW, &new);
+
+  while(1) {
+    char c = getchar();
+    int n = c == 27 ? 33 : 36;
+    if(c==27)printf("\n");
+    printf("%2d \e[%dm%c\e[m ", c, n, c); // <- change d to X or x if you want hex
+  }
+}
+
+void signal_handler(int sig)
+{
+  fputs("\n", stdout);
+  tcsetattr(0, TCSANOW, &old);
+  exit(0);
+}