The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
libswscale – video scaling and pixel format conversion library DescriptionThe libswscale library performs highly optimized image scaling and colorspace and pixel format conversion operations. Specifically, this library performs the following conversions: • Rescaling: is the process of changing the video size. Several rescaling options and algorithms are available. This is usually a lossy process. •…
libswresample – audio resampling library DescriptionThe libswresample library performs highly optimized audio resampling, rematrixing and sample format conversion operations. Specifically, this library performs the following conversions: • Resampling: is the process of changing the audio rate, for example from a high sample rate of 44100Hz to 8000Hz. Audio conversion from high to low sample rate…
libstorage – routines for managing INN storage Synopsis #include <inn/storage.h> typedef enum { RETR_ALL, RETR_HEAD, RETR_BODY, RETR_STAT } RETRTYPE; typedef enum { SM_RDWR, SM_PREOPEN } SMSETUP; typedef unsigned char STORAGECLASS; typedef unsigned char STORAGETYPE; typedef struct token { STORAGETYPE type; STORAGECLASS class; char token[STORAGE_TOKEN_LENGTH]; } TOKEN; typedef struct { unsigned char type; const char *data;…
statgrab, libstatgrab – get system statistics Synopsis#include <statgrab.h>sg_error sg_init (int ignore_init_errors); sg_error sg_shutdown (void); sg_error sg_drop_privileges (void); sg_error sg_get_error (void); const char *sg_get_error_arg (void); int sg_get_error_errno (void); const char *sg_str_error (sg_error code); sg_error sg_get_error_details (sg_error_details *err_details); char *sg_strperror (char **buf, const sg_error_details * const err_details); size_t sg_get_nelements (const void *data); sg_error sg_free_stats_buf (void *data); sg_error…
libssh2_version – return the libssh2 version number Synopsis#include <libssh2.h> const char * libssh2_version(int required_version); DescriptionIf required_version is lower than or equal to the version number of the libssh2 in use, the version number of libssh2 is returned as a pointer to a zero terminated string. The required_version should be the version number as constructed by…
libssh2_userauth_publickey_fromfile – authenticate a session with a public key, read from a file Synopsis#include <libssh2.h> int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, const char *username, const char *publickey, const char *privatekey, const char *passphrase);Descriptionsession – Session instance as returned by libssh2_session_init_ex(3) username – Pointer to user name to authenticate as. username_len – Length of username. publickey – Path name…
libssh2_userauth_publickey_fromfile – convenience macro for libssh2_userauth_publickey_fromfile_ex(3) calls Synopsis#include <libssh2.h> int libssh2_userauth_publickey_fromfile(LIBSSH2_SESSION *session, const char *username, const char *publickey, const char *privatekey, const char *passphrase); DescriptionThis is a macro defined in a public libssh2 header file that is using the underlying function libssh2_userauth_publickey_fromfile_ex(3). Return ValueSee libssh2_userauth_publickey_fromfile_ex(3) ErrorsSee libssh2_userauth_publickey_fromfile_ex(3) See Alsolibssh2_userauth_publickey_fromfile_ex(3)
libssh2_userauth_publickey – authenticate using a callback function Synopsis#include <libssh2.h> int libssh2_userauth_publickey(LIBSSH2_SESSION *session, const char *user, const unsigned char *pubkeydata, size_t pubkeydata_len, sign_callback, void **abstract);DescriptionAuthenticate with the sign_callback callback that matches the prototype below Callbackint name(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len, const unsigned char *data, size_t data_len, void **abstract);This function gets called… Return ValueReturn 0…
libssh2_userauth_password_ex – authenticate a session with username and password Synopsis#include <libssh2.h> int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, const char *username, unsigned int username_len, const char *password, unsigned int password_len, LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb))); #define libssh2_userauth_password(session, username, password) \ libssh2_userauth_password_ex((session), (username), \ strlen(username), \ (password), strlen(password), NULL)Descriptionsession – Session instance as returned by libssh2_session_init_ex(3) username – Name of user to attempt plain…
libssh2_userauth_password – convenience macro for libssh2_userauth_password_ex(3) calls Synopsis#include <libssh2.h> int libssh2_userauth_password(LIBSSH2_SESSION *session, const char *username, const char *password); DescriptionThis is a macro defined in a public libssh2 header file that is using the underlying function libssh2_userauth_password_ex(3). Return ValueSee libssh2_userauth_password_ex(3) ErrorsSee libssh2_userauth_password_ex(3) See Alsolibssh2_userauth_password_ex(3)
libssh2_userauth_list – list supported authentication methods Synopsis#include <libssh2.h> char * libssh2_userauth_list(LIBSSH2_SESSION *session, const char *username, unsigned int username_len);Descriptionsession – Session instance as returned by libssh2_session_init_ex(3) username – Username which will be used while authenticating. Note that most server implementations do not permit attempting authentication with different usernames between requests. Therefore this must be the same…
libssh2_userauth_keyboard_interactive_ex – authenticate a session using keyboard-interactive authentication Synopsis#include <libssh2.h> int libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION *session, const char *username, unsigned int username_len, LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(*response_callback));Descriptionsession – Session instance as returned by libssh2_session_init_ex(3). username – Name of user to attempt keyboard-interactive authentication for. username_len – Length of username parameter. response_callback – As authentication proceeds, the host issues several (1 or more)…
libssh2_userauth_keyboard_interactive – convenience macro for libssh2_userauth_keyboard_interactive_ex(3) calls Synopsis#include <libssh2.h> int libssh2_userauth_keyboard_interactive(LIBSSH2_SESSION* session, const char *username, LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)));DescriptionThis is a macro defined in a public libssh2 header file that is using the underlying function libssh2_userauth_keyboard_interactive_ex(3). Return ValueSee libssh2_userauth_keyboard_interactive_ex(3) ErrorsSee libssh2_userauth_keyboard_interactive_ex(3) See Alsolibssh2_userauth_keyboard_interactive_ex(3)
libssh2_userauth_hostbased_fromfile_ex – TODO SynopsisDescriptionReturn ValueErrorsSee Also
libssh2_userauth_hostbased_fromfile – convenience macro for libssh2_userauth_hostbased_fromfile_ex(3) calls Synopsis#include <libssh2.h> int libssh2_userauth_hostbased_fromfile(LIBSSH2_SESSION *session, const char *username, const char *publickey, const char *privatekey, const char *passphrase, const char *hostname); DescriptionThis is a macro defined in a public libssh2 header file that is using the underlying function libssh2_userauth_hostbased_fromfile_ex(3). Return ValueSee libssh2_userauth_hostbased_fromfile_ex(3) ErrorsSee libssh2_userauth_hostbased_fromfile_ex(3) See Alsolibssh2_userauth_hostbased_fromfile_ex(3)
libssh2_userauth_authenticated – return authentication status Synopsis#include <libssh2.h> int libssh2_userauth_authenticated(LIBSSH2_SESSION *session); Descriptionsession – Session instance as returned by libssh2_session_init_ex(3) Indicates whether or not the named session has been successfully authenticated. Return ValueReturns 1 if authenticated and 0 if not. See Alsolibssh2_session_init_ex(3)
libssh2_trace_sethandler – set a trace output handler Synopsis#include <libssh2.h> typedef void (*libssh2_trace_handler_func)(LIBSSH2_SESSION *session, void* context, const char *data, size_t length); int libssh2_trace_sethandler(LIBSSH2_SESSION *session, void* context, libssh2_trace_handler_func callback);Descriptionlibssh2_trace_sethandler installs a trace output handler for your application. By default, when tracing has been switched on via a call to libssh2_trace(), all output is written to stderr. By…
libssh2_trace – enable debug info from inside libssh2 Synopsis#include <libssh2.h> void libssh2_trace(LIBSSH2_SESSION *session, int bitmask); DescriptionThis is a function present in the library that can be used to get debug info from within libssh2 when it is running. Helpful when trying to trace or debug behaviors. Note that this function has no effect unless libssh2…
libssh2_sftp_write – write SFTP data Synopsis#include <libssh2.h> #include <libssh2_sftp.h> ssize_t libssh2_sftp_write(LIBSSH2_SFTP_HANDLE *handle, const char *buffer, size_t count);Descriptionlibssh2_sftp_write(3) writes a block of data to the SFTP server. This method is modeled after the POSIX write() function and uses the same calling semantics. handle – SFTP file handle as returned by libssh2_sftp_open_ex(3). buffer – points to the…
libssh2_sftp_unlink_ex – unlink an SFTP file Synopsis#include <libssh2.h> #include <libssh2_sftp.h> int libssh2_sftp_unlink_ex(LIBSSH2_SFTP *sftp, const char *filename, unsigned int filename_len); int libssh2_sftp_unlink(LIBSSH2_SFTP *sftp, const char *filename); Descriptionsftp – SFTP instance as returned by libssh2_sftp_init(3) filename – Path and name of the existing filesystem entry filename_len – Length of the path and name of the existing filesystem…