addding sysfs and pipes etc

1 files changed, 11 insertions, 6 deletions

diff --git a/userspace/cat.c b/userspace/cat.c
index 5b419ca..d0b018b 100644
--- a/userspace/cat.c
+++ b/userspace/cat.c
@@ -5,8 +5,17 @@ int main(int argc, char **argv)
     FILE *f;
     if(argc>1){
 	char buf[256];
-	sprintf(buf,"%s/%s",getenv("PWD"),argv[1]);
-	f=fopen(buf,"r");
+	if(argv[1][0]!='/')
+	{
+	    sprintf(buf,"%s/%s",getenv("PWD"),argv[1]);
+	    printf("cat %s\n",buf);
+	    f=fopen(buf,"r");
+	}
+	else
+	{
+	    printf("cat %s\n",argv[1]);
+	    f=fopen(argv[1],"r");
+	}
     }
     else f=stdin;
 
@@ -15,14 +24,10 @@ int main(int argc, char **argv)
 
     char c;
 
-    printf("-- reading from file byte by byte --\n\n");
-
     while(fread(&c,1,1,f))
     {
 	printf("%c",c);
     }
 
-    printf("\n-- no more data on this file --\n");
-
     return 0;
 }