have sh print prompt with write, not printf, to make

system call lecture a little clearer.
2022-08-10 06:42:17 -04:00 · 2022-08-10 06:42:17 -04:00 · c3a17f454a
commit c3a17f454a
parent 311479ceb7
1 changed files with 1 additions and 1 deletions
--- a/user/sh.c
+++ b/user/sh.c
@ -134,7 +134,7 @@ runcmd(struct cmd *cmd)
 int
 getcmd(char *buf, int nbuf)
 {
-  fprintf(2, "$ ");
+  write(1, "$ ", 2);
  memset(buf, 0, nbuf);
  gets(buf, nbuf);
  if(buf[0] == 0) // EOF