new utilities.
the .C files compile but are renamed to avoid building automatically.
diff --git a/src/cmd/cat.c b/src/cmd/cat.c
new file mode 100644
index 0000000..ac58889
--- /dev/null
+++ b/src/cmd/cat.c
@@ -0,0 +1,36 @@
+#include <u.h>
+#include <libc.h>
+
+void
+cat(int f, char *s)
+{
+ char buf[8192];
+ long n;
+
+ while((n=read(f, buf, (long)sizeof buf))>0)
+ if(write(1, buf, n)!=n)
+ sysfatal("write error copying %s: %r", s);
+ if(n < 0)
+ sysfatal("error reading %s: %r", s);
+}
+
+void
+main(int argc, char *argv[])
+{
+ int f, i;
+
+ argv0 = "cat";
+ if(argc == 1)
+ cat(0, "<stdin>");
+ else for(i=1; i<argc; i++){
+ f = open(argv[i], OREAD);
+ if(f < 0)
+ sysfatal("can't open %s: %r", argv[i]);
+ else{
+ cat(f, argv[i]);
+ close(f);
+ }
+ }
+ exits(0);
+}
+
