hugehelp.c

harvest是一个下载html网页得机器人

"              attempted to be made secure by using  the  CA  cer-\n"
"              tificate  bundle  installed  by default. This makes\n"
, stdout);
 fputs(
"              all  connections  considered  \"insecure\"  to   fail\n"
"              unless -k/--insecure is used.\n"
"\n"
"              This  option  is ignored if --cacert or --capath is\n"
"              used!\n"
"\n"
"              If this option is used twice, the second time  will\n"
"              again disable it.\n"
"\n"
"       --krb4 <level>\n"
"              (FTP)  Enable kerberos4 authentication and use. The\n"
"              level must be entered and should be one of 'clear',\n"
, stdout);
 fputs(
"              'safe', 'confidential' or 'private'. Should you use\n"
"              a level that is not one of  these,  'private'  will\n"
"\n"
"              instead be used.\n"
"\n"
"              If  this option is used several times, the last one\n"
"              will be used.\n"
"\n"
"       -K/--config <config file>\n"
"              Specify which config file to  read  curl  arguments\n"
"              from.  The config file is a text file in which com-\n"
"              mand line arguments can be written which then  will\n"
, stdout);
 fputs(
"              be  used as if they were written on the actual com-\n"
"              mand line. Options and  their  parameters  must  be\n"
"              specified  on  the  same  config  file line. If the\n"
"              parameter is to contain white spaces, the parameter\n"
"              must  be inclosed within quotes.  If the first col-\n"
"              umn of a config line is a '#' character,  the  rest\n"
"              of the line will be treated as a comment.\n"
"\n"
, stdout);
 fputs(
"              Specify  the  filename as '-' to make curl read the\n"
"              file from stdin.\n"
"\n"
"              Note that to be able to specify a URL in the config\n"
"              file,  you  need  to  specify  it  using  the --url\n"
"              option, and not by simply writing the  URL  on  its\n"
"              own line. So, it could look similar to this:\n"
"\n"
"              url = \"http://curl.haxx.se/docs/\"\n"
"\n"
"              This option can be used multiple times.\n"
"\n"
"       --limit-rate <speed>\n"
, stdout);
 fputs(
"              Specify  the maximum transfer rate you want curl to\n"
"              use. This feature is useful if you have  a  limited\n"
"              pipe  and  you'd  like  your  transfer not use your\n"
"              entire bandwidth.\n"
"\n"
"              The given speed is measured in bytes/second, unless\n"
"              a  suffix  is  appended.  Appending 'k' or 'K' will\n"
"              count the number as kilobytes, 'm' or M'  makes  it\n"
"              megabytes  while  'g'  or  'G'  makes it gigabytes.\n"
, stdout);
 fputs(
"              Examples: 200K, 3m and 1G.\n"
"\n"
"              This option was introduced in curl 7.10.\n"
"\n"
"              If this option is used several times, the last  one\n"
"              will be used.\n"
"\n"
"       -l/--list-only\n"
"              (FTP)  When  listing  an FTP directory, this switch\n"
"              forces a name-only view.  Especially useful if  you\n"
"              want to machine-parse the contents of an FTP direc-\n"
"              tory since the normal directory view doesn't use  a\n"
, stdout);
 fputs(
"              standard look or format.\n"
"\n"
"              This  option causes an FTP NLST command to be sent.\n"
"              Some FTP servers list only files in their  response\n"
"              to  NLST;  they  do  not include subdirectories and\n"
"              symbolic links.\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable list only.\n"
"\n"
"       -L/--location\n"
"              (HTTP/HTTPS)   If   the  server  reports  that  the\n"
, stdout);
 fputs(
"              requested page has a different location  (indicated\n"
"              with  the header line Location:) this flag will let\n"
"              curl attempt to reattempt the get on the new place.\n"
"              If  used  together  with -i or -I, headers from all\n"
"              requested pages will be shown. If authentication is\n"
"              used,  curl  will  only send its credentials to the\n"
"              initial host, so if a redirect takes curl to a dif-\n"
, stdout);
 fputs(
"              ferent  host, it won't intercept the user+password.\n"
"              See also --location-trusted on how to change  this.\n"
"              If this option is used twice, the second will again\n"
"              disable location following.\n"
"\n"
"       --location-trusted\n"
"              (HTTP/HTTPS) Like --location, but will allow  send-\n"
"              ing  the name + password to all hosts that the site\n"
"              may redirect to. This may or may  not  introduce  a\n"
, stdout);
 fputs(
"              security breach if the site redirects you do a site\n"
"              to  which  you'll  send  your  authentication  info\n"
"              (which  is  plaintext  in  the  case  of HTTP Basic\n"
"              authentication).\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable location following.\n"
"\n"
"       --max-filesize <bytes>\n"
"              Specify  the  maximum  size (in bytes) of a file to\n"
, stdout);
 fputs(
"              download. If the file requested is larger than this\n"
"              value,  the  transfer  will not start and curl will\n"
"              return with exit code 63.\n"
"\n"
"              NOTE: The file size is not always  known  prior  to\n"
"              download,  and  for  such  files this option has no\n"
"              effect even if the  file  transfer  ends  up  being\n"
"              larger  than  this  given limit. This concerns both\n"
"              FTP and HTTP transfers.\n"
, stdout);
 fputs(
"       -m/--max-time <seconds>\n"
"              Maximum time in seconds that you  allow  the  whole\n"
"              operation  to  take.  This is useful for preventing\n"
"              your batch jobs from hanging for hours due to  slow\n"
"              networks  or  links  going down.  This doesn't work\n"
"              fully in win32 systems.  See  also  the  --connect-\n"
"              timeout option.\n"
"\n"
"              If  this option is used several times, the last one\n"
"              will be used.\n"
"\n"
, stdout);
 fputs(
"       -M/--manual\n"
"              Manual. Display the huge help text.\n"
"\n"
"       -n/--netrc\n"
"              Makes curl scan the .netrc file in the user's  home\n"
"              directory for login name and password. This is typ-\n"
"              ically used for ftp on unix.  If  used  with  http,\n"
"              curl  will enable user authentication. See netrc(4)\n"
"              or ftp(1) for details on the file format. Curl will\n"
"              not  complain if that file hasn't the right permis-\n"
, stdout);
 fputs(
"              sions (it should not be world nor group  readable).\n"
"              The environment variable \"HOME\" is used to find the\n"
"              home directory.\n"
"\n"
"              A quick and very simple example of how to  setup  a\n"
"              .netrc   to  allow  curl  to  ftp  to  the  machine\n"
"              host.domain.com with user name 'myself'  and  pass-\n"
"              word 'secret' should look similar to:\n"
"\n"
"              machine   host.domain.com   login  myself  password\n"
, stdout);
 fputs(
"              secret\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable netrc usage.\n"
"\n"
"       --negotiate\n"
"              (HTTP)  Enables  GSS-Negotiate  authentication. The\n"
"              GSS-Negotiate method was designed by Microsoft  and\n"
"              is  used  in their web aplications. It is primarily\n"
"              meant as a support for Kerberos5 authentication but\n"
"              may  be also used along with another authentication\n"
, stdout);
 fputs(
"              methods. For more information see IETF draft draft-\n"
"              brezak-spnego-http-04.txt. (Added in 7.10.6)\n"
"\n"
"              NOTE  that  this  option requiures that the library\n"
"              was built with GSSAPI support.  This  is  not  very\n"
"              common.  Use  curl --version to see if your version\n"
"              supports GSS-Negotiate.\n"
"\n"
"              If this option is used several times, the following\n"
"              occurrences make no difference.\n"
"\n"
"       -N/--no-buffer\n"
, stdout);
 fputs(
"              Disables  the  buffering  of  the output stream. In\n"
"              normal work situations, curl will  use  a  standard\n"
"              buffered  output  stream  that will have the effect\n"
"              that it will output the data in chunks, not  neces-\n"
"              sarily  exactly  when the data arrives.  Using this\n"
"              option will disable that buffering.\n"
"\n"
"              If this option is used twice, the second will again\n"
"\n"
"              switch on buffering.\n"
"\n"
, stdout);
 fputs(
"       --ntlm (HTTP)   Enables   NTLM  authentication.  The  NTLM\n"
"              authentication method was designed by Microsoft and\n"
"              is  used  by  IIS  web servers. It is a proprietary\n"
"              protocol, reversed engineered by clever people  and\n"
"              implemented  in  curl  based on their efforts. This\n"
"              kind of behavior should not be endorsed, you should\n"
"              encourage  everyone  who  uses  NTLM to switch to a\n"
, stdout);
 fputs(
"              public   and   documented   authentication   method\n"
"              instead. Such as Digest. (Added in 7.10.6)\n"
"\n"
"              NOTE  that  this  option requiures that the library\n"
"              was built with SSL support. Use curl  --version  to\n"
"              see if your version supports NTLM.\n"
"\n"
"              If this option is used several times, the following\n"
"              occurrences make no difference.\n"
"\n"
"       -o/--output <file>\n"
, stdout);
 fputs(
"              Write output to <file> instead of  stdout.  If  you\n"
"              are using {} or [] to fetch multiple documents, you\n"
"              can use '#' followed by  a  number  in  the  <file>\n"
"              specifier.  That variable will be replaced with the\n"
"              current string for the URL being fetched. Like in:\n"
"\n"
"                curl http://{one,two}.site.com -o \"file_#1.txt\"\n"
"\n"
"              or use several variables like:\n"
"\n"
, stdout);
 fputs(
"                curl http://{site,host}.host[1-5].com -o \"#1_#2\"\n"
"\n"
"              You may use this option as many times as  you  have\n"
"              number of URLs.\n"
"\n"
"              See  also  the  --create-dirs  option to create the\n"
"              local directories dynamically.\n"
"\n"
"       -O/--remote-name\n"
"              Write output to a local file named like the  remote\n"
"              file we get. (Only the file part of the remote file\n"
"              is used, the path is cut off.)\n"
"\n"
, stdout);
 fputs(
"              You may use this option as many times as  you  have\n"
"              number of URLs.\n"
"\n"
"       -p/--proxytunnel\n"
"              When  an HTTP proxy is used, this option will cause\n"
"              non-HTTP protocols to attempt to tunnel through the\n"
"              proxy  instead  of  merely using it to do HTTP-like\n"
"              operations. The tunnel approach is  made  with  the\n"
"              HTTP  proxy  CONNECT  request and requires that the\n"
, stdout);
 fputs(
"              proxy allows direct connect to the remote port num-\n"
"              ber curl wants to tunnel through to.\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable proxy tunnel.\n"
"\n"
"       -P/--ftpport <address>\n"
"              (FTP) Reverses the  initiator/listener  roles  when\n"
"              connecting with ftp. This switch makes Curl use the\n"
"              PORT command instead of  PASV.  In  practice,  PORT\n"
, stdout);
 fputs(
"              tells  the server to connect to the client's speci-\n"
"              fied address and port, while PASV asks  the  server\n"
"              for an ip address and port to connect to. <address>\n"
"              should be one of:\n"
"\n"
"              interface   i.e \"eth0\" to specify which interface's\n"
"                          IP address you want to use  (Unix only)\n"
"\n"
"              IP address  i.e \"192.168.10.1\" to specify exact  IP\n"
"                          number\n"
"\n"
, stdout);
 fputs(
"              host name   i.e \"my.host.domain\" to specify machine\n"
"              -           (any single-letter string) to  make  it\n"
"                          pick the machine's default\n"
"\n"
"       If this option is used several times, the last one will be\n"
"       used.\n"
"\n"
"       -q     If used as the first parameter on the command line,\n"
"              the $HOME/.curlrc file will not be read and used as\n"
"              a config file.\n"
"\n"
"       -Q/--quote <comand>\n"
, stdout);
 fputs(
"              (FTP) Send an arbitrary command to the  remote  FTP\n"
"              server,  by  using the QUOTE command of the server.\n"
"              Not all servers support this command, and  the  set\n"
"              of  QUOTE  commands are server specific! Quote com-\n"