ref: 9c9710c8dd7277bb0df1b8f0ba023d1f2163cb26
parent: da5d6db6f5bbe2b68288b22dd9b0d4dfa69163db
author: aiju <[email protected]>
date: Tue May 17 12:52:25 EDT 2011
added tput(1)
--- /dev/null
+++ b/sys/src/cmd/tput.c
@@ -1,0 +1,42 @@
+#include <u.h>
+#include <libc.h>
+
+enum {buflen = 4096};+
+void
+main(int argc, char **argv)
+{+ int rc, cpid, fd, dopipe;
+ static char buf[buflen];
+ static uvlong bc, sec;
+ double speed;
+
+ dopipe = 0;
+ ARGBEGIN {+ case 'p': dopipe = 1;
+ } ARGEND
+
+ bc = 0;
+ sec = 0;
+ cpid = rfork(RFPROC | RFMEM);
+ if(cpid == 0) {+ while(1) {+ sleep(1000);
+ speed = bc / ++sec;
+ if(speed >= 1073741824) fprint(2, "%.2f GB/s\n", speed / 1073741824);
+ else if(speed >= 1048576) fprint(2, "%.2f MB/s\n", speed / 1048576);
+ else if(speed >= 1024) fprint(2, "%.2f KB/s\n", speed / 1024);
+ else fprint(2, "%.2f B/s\n", speed);
+ }
+ }
+ while(1) {+ rc = read(0, buf, buflen);
+ if(rc <= 0) break;
+ if(dopipe) write(1, buf, rc);
+ bc += rc;
+ }
+ sprint(buf, "/proc/%d/note", cpid);
+ fd = open(buf, OWRITE);
+ write(fd, "kill", 4);
+ if(rc < 0) sysfatal("%r");+}