Linux Quiz

[LSA]

Ok new question



How do you change your default shell?

[ck-uk]

Shn r u hidin again

[shn]

Originally posted by LSA@24 March 2004 - 16:24
Ok new question



How do you change your default shell?

Even though you edited that, I'm still going to post this because Linux Quiz is for learning after all right?

Your proposed answer formally debated before your edit.

DESCRIPTION

      lpq  shows  the  current print queue status on the named printer.  Jobs
      queued on the default destination will be shown if no printer or  class
      is specified on the command-line.

      The  interval  option allows you to continuously report the jobs in the
      queue until the queue is empty; the list of  jobs  is  show  one  every
      interval seconds.......................

The correct answer is lpc

NAME
    lpc - line printer control program

SYNOPSIS
    lpc [command [argument ...]]

DESCRIPTION
    lpc is used by the system administrator to control the operation of the
    line printer system.  For each line printer configured in /etc/printcap,
    lpc may be used to:

          o  disable or enable a printer,

          o  disable or enable a printer's spooling queue,

          o  rearrange the order of jobs in a spooling queue,

          o  find the status of printers, and their associated spooling
              queues and printer daemons...................

Source

[ck-uk]

[LSA]

Originally posted by shn+24 March 2004 - 16:43--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (shn @ 24 March 2004 - 16:43)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-LSA@24 March 2004 - 16:24
Ok new question



How do you change your default shell?

Even though you edited that, I&#39;m still going to post this because Linux Quiz is for learning after all right?

Your proposed answer formally debated before your edit.

DESCRIPTION

&nbsp; &nbsp; &nbsp; lpq&nbsp; shows&nbsp; the&nbsp; current print queue status on the named printer.&nbsp; Jobs
&nbsp; &nbsp; &nbsp; queued on the default destination will be shown if no printer or&nbsp; class
&nbsp; &nbsp; &nbsp; is specified on the command-line.

&nbsp; &nbsp; &nbsp; The&nbsp; interval&nbsp; option allows you to continuously report the jobs in the
&nbsp; &nbsp; &nbsp; queue until the queue is empty; the list of&nbsp; jobs&nbsp; is&nbsp; show&nbsp; one&nbsp; every
&nbsp; &nbsp; &nbsp; interval seconds.......................

The correct answer is lpc

NAME
&nbsp; &nbsp; lpc - line printer control program

SYNOPSIS
&nbsp; &nbsp; lpc [command [argument ...]]

DESCRIPTION
&nbsp; &nbsp; lpc is used by the system administrator to control the operation of the
&nbsp; &nbsp; line printer system.&nbsp; For each line printer configured in /etc/printcap,
&nbsp; &nbsp; lpc may be used to:

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; o&nbsp; disable or enable a printer,

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; o&nbsp; disable or enable a printer&#39;s spooling queue,

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; o&nbsp; rearrange the order of jobs in a spooling queue,

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; o&nbsp; find the status of printers, and their associated spooling
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; queues and printer daemons...................

Source [/b][/quote]
Thanks, I was wondering about that.

I looked at the man pages after I posted because I wasn&#39;t sure, but both pages said stuff about queue so I just took it out. :">

[LSA]

New question, what config file lists the modules to be loaded at startup?

[h1]

A valid answer to the question posed by me on page three would be:

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#ifdef REALLY_RAW
#define FIX(x) htons(x)
#else
#define FIX(x) (x)
#endif
int main(int argc, char **argv)
{
   int s;
   char buf[1500];
   struct ip *ip = (struct ip *)buf;
   struct icmp *icmp = (struct icmp *)(ip + 1);
   struct hostent *hp;
   struct sockaddr_in dst;
   int offset;
   int on = 1;
   bzero(buf, sizseof buf);
   if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_IP)) < 0)
   {
      perror("socket");
      exit(1);
   }
   if (setsockopts(s, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)) < 0
   {
      perror("IP_HDRINCL");
      exit(1);
   }
   if (argc != 2)
   {
      fprintf(stderr, "usage: %s hostname\n:, argv[0]);
      exit(1);
   }
   if ((hp = getbyhostname(argv[1])) == NULL)
   {
      if ((ip->ip_dst.s_addr = inet_addr(argv[1])) == -1)
      {
         fprintf9stderr, "%s: unknown host\n", argv[1]);
      }
   }
   else
   {
      bcopy(hp->h_addr_list[0], &ip->ip_dst.s_addr, hp->h_length;
   }
   printf("Sending to %s\n", inet_ntoa(ip->ip_dst));
   ip->ip_v = 4;
   ip->ip_hl = sizeof *ip >> 2;
   ip->ip_tos = 0;
   ip->ip_len = FIX(sizeof buf);
   ip->ip_id = htons(4321);
   ip->ip_off = FIX(0);
   ip->ip_ttl = 255;
   ip->ip_p = 1;
   ip->ip_sum = 0;
   ip->ip_src.s_addr = 0;
   dst.sin_addr = ip->ip_dst;
   dst.sin_family = AF_INET;
   icmp->icmp_type = ICMP_ECHO;
   icmp->icmp_code = 0;
   icmp->icmp_cksum = htons(~(ICMP_ECHO << 8));
   for (offset = 0; offset <65536; offset += (sizeof buf - sizeof *ip))
   {
      ip->ip_off = FIX(offset >> 3);
      if (offset < 65120)
      ip->ip_off l= FIX(IP_MF);
      else ip->ip_len = FIX(418);
      if (sendto(s, buf, sizeof buf, 0, (struct sockaddr *)&dst, sizeof dst) < 0)
      {
         fprintf(stderr, "offset %d: ", offset);
         perror("sendto");
      }
      if (offset == 0)
      {
         icmp->icmp_type = 0;
         icmp->icmp_code = 0;
         icmp->icmp_cksum = 0;
      }
   }
}

[LSA]

Originally posted by haxor41789@24 March 2004 - 19:41
A valid answer to the question posed by me on page three would be:

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#ifdef REALLY_RAW
#define FIX(x) htons(x)
#else
#define FIX(x) (x)
#endif
int main(int argc, char **argv)
{
   int s;
   char buf[1500];
   struct ip *ip = (struct ip *)buf;
   struct icmp *icmp = (struct icmp *)(ip + 1);
   struct hostent *hp;
   struct sockaddr_in dst;
   int offset;
   int on = 1;
   bzero(buf, sizseof buf);
   if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_IP)) < 0)
   {
      perror("socket");
      exit(1);
   }
   if (setsockopts(s, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)) < 0
   {
      perror("IP_HDRINCL");
      exit(1);
   }
   if (argc != 2)
   {
      fprintf(stderr, "usage: %s hostname\n:, argv[0]);
      exit(1);
   }
   if ((hp = getbyhostname(argv[1])) == NULL)
   {
      if ((ip->ip_dst.s_addr = inet_addr(argv[1])) == -1)
      {
         fprintf9stderr, "%s: unknown host\n", argv[1]);
      }
   }
   else
   {
      bcopy(hp->h_addr_list[0], &ip->ip_dst.s_addr, hp->h_length;
   }
   printf("Sending to %s\n", inet_ntoa(ip->ip_dst));
   ip->ip_v = 4;
   ip->ip_hl = sizeof *ip >> 2;
   ip->ip_tos = 0;
   ip->ip_len = FIX(sizeof buf);
   ip->ip_id = htons(4321);
   ip->ip_off = FIX(0);
   ip->ip_ttl = 255;
   ip->ip_p = 1;
   ip->ip_sum = 0;
   ip->ip_src.s_addr = 0;
   dst.sin_addr = ip->ip_dst;
   dst.sin_family = AF_INET;
   icmp->icmp_type = ICMP_ECHO;
   icmp->icmp_code = 0;
   icmp->icmp_cksum = htons(~(ICMP_ECHO << 8));
   for (offset = 0; offset <65536; offset += (sizeof buf - sizeof *ip))
   {
      ip->ip_off = FIX(offset >> 3);
      if (offset < 65120)
      ip->ip_off l= FIX(IP_MF);
      else ip->ip_len = FIX(418);
      if (sendto(s, buf, sizeof buf, 0, (struct sockaddr *)&dst, sizeof dst) < 0)
      {
         fprintf(stderr, "offset %d: ", offset);
         perror("sendto");
      }
      if (offset == 0)
      {
         icmp->icmp_type = 0;
         icmp->icmp_code = 0;
         icmp->icmp_cksum = 0;
      }
   }
}

I was just thinking that&#33;

j/k

[shn]

Originally posted by haxor41789@24 March 2004 - 19:41
A valid answer to the question posed by me on page three would be:

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#ifdef REALLY_RAW
#define FIX(x) htons(x)
#else
#define FIX(x) (x)
#endif
int main(int argc, char **argv)
{
  int s;
  char buf[1500];
  struct ip *ip = (struct ip *)buf;
  struct icmp *icmp = (struct icmp *)(ip + 1);
  struct hostent *hp;
  struct sockaddr_in dst;
  int offset;
  int on = 1;
  bzero(buf, sizseof buf);
  if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_IP)) < 0)
  {
   perror("socket");
   exit(1);
  }
  if (setsockopts(s, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)) < 0
  {
   perror("IP_HDRINCL");
   exit(1);
  }
  if (argc != 2)
  {
   fprintf(stderr, "usage: %s hostname\n:, argv[0]);
   exit(1);
  }
  if ((hp = getbyhostname(argv[1])) == NULL)
  {
   if ((ip->ip_dst.s_addr = inet_addr(argv[1])) == -1)
   {
     fprintf9stderr, "%s: unknown host\n", argv[1]);
   }
  }
  else
  {
   bcopy(hp->h_addr_list[0], &ip->ip_dst.s_addr, hp->h_length;
  }
  printf("Sending to %s\n", inet_ntoa(ip->ip_dst));
  ip->ip_v = 4;
  ip->ip_hl = sizeof *ip >> 2;
  ip->ip_tos = 0;
  ip->ip_len = FIX(sizeof buf);
  ip->ip_id = htons(4321);
  ip->ip_off = FIX(0);
  ip->ip_ttl = 255;
  ip->ip_p = 1;
  ip->ip_sum = 0;
  ip->ip_src.s_addr = 0;
  dst.sin_addr = ip->ip_dst;
  dst.sin_family = AF_INET;
  icmp->icmp_type = ICMP_ECHO;
  icmp->icmp_code = 0;
  icmp->icmp_cksum = htons(~(ICMP_ECHO << 8));
  for (offset = 0; offset <65536; offset += (sizeof buf - sizeof *ip))
  {
   ip->ip_off = FIX(offset >> 3);
   if (offset < 65120)
   ip->ip_off l= FIX(IP_MF);
   else ip->ip_len = FIX(418);
   if (sendto(s, buf, sizeof buf, 0, (struct sockaddr *)&dst, sizeof dst) < 0)
   {
     fprintf(stderr, "offset %d: ", offset);
     perror("sendto");
   }
   if (offset == 0)
   {
     icmp->icmp_type = 0;
     icmp->icmp_code = 0;
     icmp->icmp_cksum = 0;
   }
  }
}

I&#39;m ripping your code for confirmation.

[h1]

You&#39;ll need REALLY_RAW to compile it.