hugehelp.c

harvest是一个下载html网页得机器人

"              mands are sent BEFORE the transfer is taking place.\n"
"              To  make  commands  take  place  after a successful\n"
"              transfer, prefix them with  a  dash  '-'.  You  may\n"
, stdout);
 fputs(
"              specify any amount of commands to be run before and\n"
"              after the transfer. If the server  returns  failure\n"
"              for  one of the commands, the entire operation will\n"
"              be aborted.\n"
"\n"
"              This option can be used multiple times.\n"
"\n"
"       --random-file <file>\n"
"              (HTTPS) Specify the path name  to  file  containing\n"
"              what will be considered as random data. The data is\n"
, stdout);
 fputs(
"              used to seed the random engine for SSL connections.\n"
"              See also the --edg-file option.\n"
"\n"
"       -r/--range <range>\n"
"              (HTTP/FTP)  Retrieve  a  byte  range (i.e a partial\n"
"              document) from a HTTP/1.1 or FTP server. Ranges can\n"
"\n"
"              be specified in a number of ways.\n"
"\n"
"              0-499     specifies the first 500 bytes\n"
"\n"
"              500-999   specifies the second 500 bytes\n"
"\n"
"              -500      specifies the last 500 bytes\n"
"\n"
, stdout);
 fputs(
"              9500      specifies  the bytes from offset 9500 and\n"
"                        forward\n"
"\n"
"              0-0,-1    specifies  the  first   and   last   byte\n"
"                        only(*)(H)\n"
"\n"
"              500-700,600-799\n"
"                        specifies 300 bytes from offset 500(H)\n"
"\n"
"              100-199,500-599\n"
"                        specifies    two   separate   100   bytes\n"
"                        ranges(*)(H)\n"
"\n"
"       (*) = NOTE that this will cause the server to reply with a\n"
, stdout);
 fputs(
"       multipart response!\n"
"\n"
"       You should also be aware that many HTTP/1.1 servers do not\n"
"       have this feature enabled, so that when you attempt to get\n"
"       a range, you'll instead get the whole document.\n"
"\n"
"       FTP range downloads only support the simple syntax 'start-\n"
"       stop' (optionally with one of  the  numbers  omitted).  It\n"
"       depends on the non-RFC command SIZE.\n"
"\n"
"       If this option is used several times, the last one will be\n"
"       used.\n"
"\n"
"       -R/--remote-time\n"
, stdout);
 fputs(
"              When used, this will make libcurl attempt to figure\n"
"              out  the  timestamp of the remote file, and if that\n"
"              is available make the  local  file  get  that  same\n"
"              timestamp.\n"
"\n"
"              If  this option is used twice, the second time dis-\n"
"              ables this again.\n"
"\n"
"       -s/--silent\n"
"              Silent mode. Don't show  progress  meter  or  error\n"
"              messages.  Makes Curl mute.\n"
"\n"
, stdout);
 fputs(
"              If this option is used twice, the second will again\n"
"              disable mute.\n"
"\n"
"       -S/--show-error\n"
"              When used with -s it makes curl show error  message\n"
"              if it fails.\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable show error.\n"
"\n"
"       --stderr <file>\n"
"              Redirect all writes to stderr to the specified file\n"
"              instead.  If  the  file  name is a plain '-', it is\n"
, stdout);
 fputs(
"              instead written to stdout. This option has no point\n"
"              when  you're  using a shell with decent redirecting\n"
"              capabilities.\n"
"\n"
"              If this option is used several times, the last  one\n"
"              will be used.\n"
"\n"
"       -t/--telnet-option <OPT=val>\n"
"              Pass  options  to  the  telnet  protocol. Supported\n"
"              options are:\n"
"\n"
"              TTYPE=<term> Sets the terminal type.\n"
"\n"
, stdout);
 fputs(
"              XDISPLOC=<X display> Sets the X display location.\n"
"\n"
"              NEW_ENV=<var,val> Sets an environment variable.\n"
"\n"
"       -T/--upload-file <file>\n"
"              This transfers the  specified  local  file  to  the\n"
"              remote  URL. If there is no file part in the speci-\n"
"              fied URL, Curl will append  the  local  file  name.\n"
"              NOTE  that  you  must  use a trailing / on the last\n"
"              directory to really prove to Curl that there is  no\n"
, stdout);
 fputs(
"              file  name or curl will think that your last direc-\n"
"              tory name is the remote file name to use. That will\n"
"              most  likely cause the upload operation to fail. If\n"
"              this is used on a http(s) server, the  PUT  command\n"
"              will be used.\n"
"\n"
"              Use  the file name \"-\" (a single dash) to use stdin\n"
"              instead of a given file.\n"
"\n"
"              Before 7.10.8, when this option  was  used  several\n"
, stdout);
 fputs(
"              times, the last one was used.\n"
"\n"
"              In  curl  7.10.8  and later, you can specify one -T\n"
"              for each URL on the command line.  Each  -T  +  URL\n"
"              pair  specifies  what  to upload and to where. curl\n"
"              also supports \"globbing\" of the -T argument,  mean-\n"
"              ing  that you can upload multiple files to a single\n"
"              URL by using the same URL globbing style  supported\n"
"              in the URL, like this:\n"
"\n"
, stdout);
 fputs(
"              curl    -T    \"{file1,file2}\"    http://www.upload-\n"
"              tothissite.com\n"
"\n"
"              or even\n"
"\n"
"              curl  -T   \"img[1-1000].png\"   ftp://ftp.picturema-\n"
"              nia.com/upload/\n"
"\n"
"       --trace <file>\n"
"              Enables  a full trace dump of all incoming and out-\n"
"              going data, including descriptive  information,  to\n"
"              the  given output file. Use \"-\" as filename to have\n"
"              the output sent to stdout.\n"
"\n"
, stdout);
 fputs(
"              If this option is used several times, the last  one\n"
"              will be used. (Added in 7.9.7)\n"
"\n"
"       --trace-ascii <file>\n"
"              Enables  a full trace dump of all incoming and out-\n"
"              going data, including descriptive  information,  to\n"
"              the  given output file. Use \"-\" as filename to have\n"
"              the output sent to stdout.\n"
"\n"
"              This is very similar to --trace, but leaves out the\n"
, stdout);
 fputs(
"              hex part and only shows the ASCII part of the dump.\n"
"              It makes smaller output that  might  be  easier  to\n"
"              read for untrained humans.\n"
"\n"
"              If  this option is used several times, the last one\n"
"              will be used. (Added in 7.9.7)\n"
"\n"
"       -u/--user <user:password>\n"
"              Specify user and password  to  use  when  fetching.\n"
"              Read the MANUAL for detailed examples of how to use\n"
, stdout);
 fputs(
"              this. If no password is specified,  curl  will  ask\n"
"              for it interactively.\n"
"\n"
"              You  can  also  use  the  --digest option to enable\n"
"              Digest authentication when communicating with  HTTP\n"
"              1.1 servers.\n"
"\n"
"              If  this option is used several times, the last one\n"
"              will be used.\n"
"\n"
"       -U/--proxy-user <user:password>\n"
"              Specify user and password to use for Proxy  authen-\n"
, stdout);
 fputs(
"              tication.  If  no  password is specified, curl will\n"
"              ask for it interactively.\n"
"\n"
"              If this option is used several times, the last  one\n"
"              will be used.\n"
"\n"
"       --url <URL>\n"
"              Specify a URL to fetch. This option is mostly handy\n"
"              when you want to specify URL(s) in a config file.\n"
"\n"
"              This option may be used any  number  of  times.  To\n"
"              control  where  this  URL is written, use the -o or\n"
, stdout);
 fputs(
"              the -O options.\n"
"\n"
"       -v/--verbose\n"
"              Makes the fetching more  verbose/talkative.  Mostly\n"
"              usable for debugging. Lines starting with '>' means\n"
"              data sent by curl, '<' means data received by  curl\n"
"              that  is  hidden in normal cases and lines starting\n"
"              with '*' means additional info provided by curl.\n"
"\n"
"              Note that if you want to see HTTP  headers  in  the\n"
, stdout);
 fputs(
"              output, -i/--include might be option you're looking\n"
"              for.\n"
"\n"
"              If you think this option  still  doesn't  give  you\n"
"              enough  details, consider using --trace or --trace-\n"
"              ascii instead.\n"
"\n"
"              If this option is used twice, the second will again\n"
"              disable verbose.\n"
"\n"
"       -V/--version\n"
"              Displays  information  about  curl  and the libcurl\n"
"              version it uses.\n"
"\n"
, stdout);
 fputs(
"              The first line includes the full version  of  curl,\n"
"              libcurl  and  other 3rd party libraries linked with\n"
"              the executable.\n"
"\n"
"              The second line (starts  with  \"Protocols:\")  shows\n"
"              all protocols that libcurl reports to support.\n"
"\n"
"              The third line (starts with \"Features:\") shows spe-\n"
"              cific features libcurl reports to offer.\n"
"\n"
"       -w/--write-out <format>\n"
, stdout);
 fputs(
"              Defines what to display after a completed and  suc-\n"
"              cessful  operation. The format is a string that may\n"
"              contain plain text mixed with any number  of  vari-\n"
"              ables.  The string can be specified as \"string\", to\n"
"              get read from a  particular  file  you  specify  it\n"
"              \"@filename\"  and  to  tell  curl to read the format\n"
"              from stdin you write \"@-\".\n"
"\n"
, stdout);
 fputs(
"              The variables present in the output format will  be\n"
"              substituted  by  the value or text that curl thinks\n"
"              fit, as described below. All variables  are  speci-\n"
"              fied like %{variable_name} and to output a normal %\n"
"              you just write them like %%. You can output a  new-\n"
"              line  by  using \\n, a carriage return with \\r and a\n"
"              tab space with \\t.\n"
"\n"
"              NOTE: The %-letter  is  a  special  letter  in  the\n"
, stdout);
 fputs(
"              win32-environment,  where all occurrences of % must\n"
"              be doubled when using this option.\n"
"\n"
"              Available variables are at this point:\n"
"\n"
"              url_effective  The URL that was fetched last.  This\n"
"                             is  mostly meaningful if you've told\n"
"                             curl to follow location: headers.\n"
"\n"
"              http_code      The numerical code that was found in\n"
"                             the last retrieved HTTP(S) page.\n"
"\n"
, stdout);
 fputs(
"              time_total     The total time, in seconds, that the\n"
"                             full operation lasted. The time will\n"
"                             be  displayed with millisecond reso-\n"
"                             lution.\n"
"\n"
"              time_namelookup\n"
"                             The time, in seconds, it  took  from\n"
"                             the  start  until the name resolving\n"
"                             was completed.\n"
"\n"
, stdout);
 fputs(
"              time_connect   The time, in seconds, it  took  from\n"
"                             the  start  until the connect to the\n"
"                             remote  host  (or  proxy)  was  com-\n"
"                             pleted.\n"
"\n"
"              time_pretransfer\n"
"                             The  time,  in seconds, it took from\n"
"                             the start until the file transfer is\n"
"                             just  about  to begin. This includes\n"
, stdout);
 fputs(
"                             all pre-transfer commands and  nego-\n"
"                             tiations  that  are  specific to the\n"
"                             particular protocol(s) involved.\n"
"\n"
"              time_starttransfer\n"
"                             The time, in seconds, it  took  from\n"