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diff --git a/.gitignore b/.gitignore
index 5c33438..6d6387d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@ _*
 *.asm
 *.sym
 *.img
+.cache
 vectors.S
 bootblock
 entryother
diff --git a/user/cat.c b/user/cat.c
index 520dc8b..0454244 100644
--- a/user/cat.c
+++ b/user/cat.c
@@ -1,39 +1,35 @@
-#include "kernel/types.h"
-#include "kernel/stat.h"
 #include "kernel/fcntl.h"
+#include "kernel/stat.h"
+#include "kernel/types.h"
 #include "user/user.h"
 
 char buf[512];
 
-void
-cat(int fd)
-{
+void cat(int fd) {
   int n;
 
-  while((n = read(fd, buf, sizeof(buf))) > 0) {
+  while ((n = read(fd, buf, sizeof(buf))) > 0) {
     if (write(1, buf, n) != n) {
       fprintf(2, "cat: write error\n");
       exit(1);
     }
   }
-  if(n < 0){
+  if (n < 0) {
     fprintf(2, "cat: read error\n");
     exit(1);
   }
 }
 
-int
-main(int argc, char *argv[])
-{
+int main(int argc, char *argv[]) {
   int fd, i;
 
-  if(argc <= 1){
+  if (argc <= 1) {
     cat(0);
     exit(0);
   }
 
-  for(i = 1; i < argc; i++){
-    if((fd = open(argv[i], O_RDONLY)) < 0){
+  for (i = 1; i < argc; i++) {
+    if ((fd = open(argv[i], O_RDONLY)) < 0) {
       fprintf(2, "cat: cannot open %s\n", argv[i]);
       exit(1);
     }