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| -rw-r--r-- | docs/FAQ | 28 |
1 files changed, 24 insertions, 4 deletions
@@ -40,6 +40,8 @@ FAQ Yes. Both ways on FTP, download ways on HTTP. + Try the -c and -C options. + 4. Is libcurl thread safe? As version seven is slowly marching in as the libcurl version to use, we @@ -124,13 +126,23 @@ FAQ part of a URL, you should qoute the entire URL by using single (') or double (") quotes round it. + An example that would invoke a remote CGI that uses &-letters could be: + + # curl "http://www.altavista.com/cgi-bin/query?text=yes&q=curl" + 10. How can I use {, }, [ or ] to specify multiple URLs? Because those letters have a special meaning to the shell, and to be used in a URL specified to curl you must quote them. + An example that downloads two URLs (sequentially) would do: + + # curl '{curl,www}.haxx.se' + 11. Where can I find a copy of LIBEAY32.DLL? + That is an OpenSSL binary built for Windows. + Curl uses OpenSSL to do the SSL stuff. The LIBEAY32.DLL is what curl needs on a windows machine to do https://. Check out the curl web page to find accurate and up-to-date pointers to recent OpenSSL DDLs and other binary @@ -143,6 +155,9 @@ FAQ respond and that means that headers and a "page" will be returned. That's simply how HTTP works. + By using the --fail option you can tell curl explicitly to not get any data + if the HTTP return code doesn't say success. + 13. Why do I get "HTTP/1.1 403 Forbidden" from a http server? RFC2616 clearly explains this return code: @@ -173,12 +188,12 @@ FAQ 16. How do I keep usernames and passwords secret in Curl command lines? - I see this problem in two parts: + I see this problem as two parts: The first part is to avoid having clear-text passwords in the command line - so that they appear in 'ps' outputs and similar. That is easily avoided by - using the "-K -" contruct that causes curl to read parameters from stdin to - which you can pass the secret info. + so that they don't appear in 'ps' outputs and similar. That is easily + avoided by using the "-K" option that tells curl to read parameters from a + file or stdin to which you can pass the secret info. To keep the passwords in your account secret from the rest of the world is not a task that curl addresses. You could of course encrypt them somehow to @@ -204,3 +219,8 @@ FAQ 19. Can I use curl to delete/rename a file through FTP? Yes. You specify custom ftp commands with -Q/--quote. + + One example would be to delete a file after you have downloaded it: + + # curl -O ftp://download.com/coolfile -Q "-DELE coolfile" + |