added decompress file to create text format from binary format

.gitignore

@@ -1,2 +1,3 @@
 *.log
-activity
+activity
+decompress

decompress.c

@@ -0,0 +1,53 @@
+//#!/usr/local/bin/tcc -run
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <time.h>
+
+int main(int argc, char** argv) {
+
+	if(argc != 3) {
+		fprintf(stderr, "Usage: %s infile outfile\n", argv[0]);
+		return 1;
+	}
+
+	int in = open(argv[1], O_RDONLY);
+	if(in == -1) {
+		fprintf(stderr, "%s: Could not open in-file: %s\n", argv[0], argv[1]);
+		return 1;
+	}
+
+	int out = open(argv[2], O_WRONLY | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
+	if(out == -1) {
+		close(in);
+		fprintf(stderr, "%s: Could not open out-file: %s\n", argv[0], argv[2]);
+		return 1;
+	}
+
+	const size_t OUTBUFFSIZE = 10;
+	char outbuff[OUTBUFFSIZE];
+	time_t inbuff;
+
+	//read until end
+	while(1) {
+		size_t rc = read(in, &inbuff, sizeof(inbuff));
+
+		if(rc != sizeof(inbuff)) break;
+
+		//prnt to file
+		size_t count = dprintf(out, "%u\n", inbuff);
+		
+		if(count == 0) {
+			fprintf(stderr, "%s: Writing failed\n", argv[0]);
+			break;
+		}
+	}
+
+	close(in);
+	close(out);
+
+	printf("Successfull!\n");
+
+	return 0;
+}