rcmd.3n (2010 09)

rcmd(3N) rcmd(3N)

struct passwd *getpwuid();

char *host[] = { "hpxzgy" };

char *cmd = "date";

char *ruser = "chm";

main(argc,argv)

int argc;

char **argv;

{

struct servent *sp;

struct passwd *pwd;

FILE *fp;

char ch;

int rem;

sp = getservbyname("shell","tcp");

pwd = getpwuid(getuid());

rem = rcmd(host, sp->s_port, pwd->pw_name, ruser, cmd, 0);

if (rem < 0)

exit(1); /* rcmd outputs its own error messages */

fp = fdopen(rem, "r");

while ((ch = getc(fp)) != EOF)

putchar(ch);

}

WARNINGS

There is no way to specify options to the socket() call that rcmd() makes. Since rcmd()

replaces

the pointer to the host name (

*ahost) with a pointer to the standard name of the host in a static data

area, this value must be copied into the user’s data area if it is to be used later. Otherwise, unpredictable

results will occur.

AUTHOR

rcmd() was developed by the University of California, Berkeley.