sed: Can't open /usr/web/plan9/sources.html #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); } sed: Can't open /usr/web/plan9/sources.html