ref: 2652cbee57edee453193d0bb58bba5d716cabe7b
dir: /sys/src/libbio/btestprint.c/
#include <u.h> #include <libc.h> #include <bio.h> void main(int argc, char **argv) { Biobuf b; char *s; int n; n = atoi(argv[1]); s = malloc(n+1); memset(s, 'a', n); s[n] = '\0'; Binit(&b, 1, OWRITE); Bprint(&b, "%s\n", s); Bflush(&b); }