sed: Can't open /usr/web/plan9/sources.html #include <unistd.h> #include <string.h> #include <sys/limits.h> /* * BUG: instead of looking at PATH env variable, * just try prepending /bin/ if name fails... */ extern char **environ; int execlp(const char *name, const char *arg0, ...) { int n; char buf[PATH_MAX]; if((n=execve(name, &arg0, environ)) < 0){ strcpy(buf, "/bin/"); strcpy(buf+5, name); n = execve(buf, &name+1, environ); } return n; } sed: Can't open /usr/web/plan9/sources.html