SysTutorials Posts

NAME libnutclient_misc, nutclient_authenticate, nutclient_logout, nutclient_device_login, nutclient_get_device_num_logins, nutclient_device_master, nutclient_device_forced_shutdown – Miscelaneous functions in Network UPS Tools high-level client access library SYNOPSIS #include <nutclient.h> typedef void* NUTCLIENT_t; void nutclient_authenticate(NUTCLIENT_t client, const char *login, const char *passwd); void nutclient_logout(NUTCLIENT_t client); void nutclient_device_login(NUTCLIENT_t client, const char *dev); int nutclient_get_device_num_logins(NUTCLIENT_t client, const char *dev); void nutclient_device_master(NUTCLIENT_t client, const char *dev);…

NAME libnutclient_general, nutclient_destroy, strarr_alloc, strarr_free – General and utility functions in Network UPS Tools high-level client access library SYNOPSIS #include <nutclient.h> typedef void* NUTCLIENT_t; void nutclient_destroy(NUTCLIENT_t client); typedef char** strarr; strarr strarr_alloc(unsigned short count); void strarr_free(strarr arr); DESCRIPTION The nutclient_destroy() function destroys a NUTCLIENT_t or derived (like NUTCLIENT_TCP_t) connection object, and frees allocated memory. The…

NAME libnutclient_devices, nutclient_get_devices, nutclient_has_device, nutclient_get_device_description – Device related functions in Network UPS Tools high-level client access library SYNOPSIS #include <nutclient.h> typedef void* NUTCLIENT_t; strarr nutclient_get_devices(NUTCLIENT_t client); int nutclient_has_device(NUTCLIENT_t client, const char *dev); char *nutclient_get_device_description(NUTCLIENT_t client, const char *dev); DESCRIPTION These functions allow to manage devices. The nutclient_get_devices() function retrieve the list of devices monitored by…

NAME libnutclient_commands, nutclient_get_device_commands, nutclient_has_device_command, nutclient_get_device_command_description, nutclient_execute_device_command – Instant command related functions in Network UPS Tools high-level client access library SYNOPSIS #include <nutclient.h> typedef void* NUTCLIENT_t; strarr nutclient_get_device_commands(NUTCLIENT_t client, const char *dev); int nutclient_has_device_command(NUTCLIENT_t client, const char *dev, const char *cmd); char *nutclient_get_device_command_description(NUTCLIENT_t client, const char *dev, const char *cmd); void nutclient_execute_device_command(NUTCLIENT_t client, const char *dev,…

NAME libnutclient – Network UPS Tools high-level client access library SYNOPSIS #include <nutclient.h> Refer to this file for more information. DESCRIPTION The Network UPS Tools (NUT) nutclient library provides a number of useful functions for programs to use when communicating with upsd(8). It provides high-level representation of NUT data through client connection, devices, variables and…

NAME libnodeupdown – a library of functions to determine if a node is up or down SYNOPSIS #include <nodeupdown.h> nodeupdown_t nodeupdown_handle_create(void); int nodeupdown_handle_destroy(nodeupdown_t handle); int nodeupdown_load_data(nodeupdown_t handle, const char *hostname, int port, int timeout_len, char *module); int nodeupdown_errnum(nodeupdown_t handle); char *nodeupdown_strerror(int errnum); char *nodeupdown_errormsg(int errnum); void nodeupdown_perror(nodeupdown_t handle, const char *msg); int nodeupdown_get_up_nodes_string(nodeupdown_t handle, char…

NAME libnftables – nftables frontend library SYNOPSIS #include <nftables/libnftables.h> struct nft_ctx *nft_ctx_new(uint32_t flags); void nft_ctx_free(struct nft_ctx *ctx); bool nft_ctx_get_dry_run(struct nft_ctx *ctx); void nft_ctx_set_dry_run(struct nft_ctx *ctx, bool dry); unsigned int nft_ctx_output_get_flags(struct nft_ctx *ctx); void nft_ctx_output_set_flags(struct nft_ctx *ctx, unsigned int flags); unsigned int nft_ctx_output_get_debug(struct nft_ctx *ctx); void nft_ctx_output_set_debug(struct nft_ctx *ctx, unsigned int mask); FILE *nft_ctx_set_output(struct nft_ctx *ctx,…

NAME libnetpbm_ug – netpbm sample code DESCRIPTION The Libnetpbm programming library is part of Netpbm(1) Example Here is an example of a C program that uses libnetpbm to read a Netpbm image input and produce a Netpbm image output. /* Example program fragment to read a PAM or PNM image from stdin, add up the…

Table Of Contents NAME libnetpbm_image – overview of netpbm image-processing functions DESCRIPTION This reference manual covers functions in the libnetpbm library for processing images, using the Netpbm image formats and the libnetpbm in-memory image formats. For historical reasons as well as to avoid clutter, it does not cover the largely obsolete PBM, PGM, PPM, and…

Table Of Contents NAME libnetpbm_draw \- Libnetpbm PPM Drawing Function Manual DESCRIPTION This reference manual covers functions in the libnetpbm library for drawing images, using the PPM image format and the libnetpbm in-memory image formats. We actually have very little information here; this is mainly a framework for adding documentation later if someone becomes interested…

NAME libnetpbm – general introduction to the netpbm library DESCRIPTION libnetpbm is a C programming library for reading, writing, and manipulating Netpbm images. It also contains a few general graphics manipulation tools, but it is not intended to be a graphics tools library. For graphics tools, Netpbm expects you to run the Netpbm programs. From…

NAME libnetlink – A library for accessing the netlink service SYNOPSIS #include <asm/types.h> #include <libnetlink.h> #include <linux/netlink.h> #include <linux/rtnetlink.h> int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions) int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type) int rtnl_send(struct rtnl_handle *rth, char *buf, int len) int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len) int rtnl_dump_filter(struct rtnl_handle *rth,…

NAME libnet – "libpwrite" Network Routine Library DESCRIPTION The Network Library provides a simple API for commonly used low-level network functions (mainly packet injection). Using libnet, it is easy to build and write arbitrary network packets. It provides a portable framework for low-level network packet writing and handling (use libnet in conjunction with libpcap and…

NAME libmosquitto – MQTT version 3.1 client library DESCRIPTION This is an overview of how to use libmosquitto to create MQTT aware client programs. There may be separate man pages on each of the functions described here in the future. There is also a binding for libmosquitto for C++ and a Python implementation. They are…

NAME libmng – Multiple-image Network Graphics (MNG) Reference Library 1.0.9 SYNOPSIS #include <libmng.h> DESCRIPTION The libmng library supports decoding, displaying, encoding, and various other manipulations of the Multiple-image Network Graphics (MNG) format image files. It uses the zlib(3) compression library, and optionally the JPEG library by the Independant JPEG Group (IJG) and/or lcms (little cms),…

NAME GNU libmicrohttpd – library for embedding HTTP servers SYNOPSIS  #include <microhttpd.h> DESCRIPTION GNU libmicrohttpd (short MHD) allows applications to easily integrate the functionality of a simple HTTP server. MHD is a GNU package. The details of the API are described in comments in the header file, a detailed reference documentation, a tutorial, and in brief…

NAME libmemcachedutil – libmemcached Documentation Utility library for libmemcached SYNOPSIS cc[flag…] file… – lmemcachedutil #include <libmemcached/memcached_util.h> DESCRIPTION libmemcachedutil is a small and thread-safe client library that provides extra functionality built on top of libmemcached. THREADS Do not try to access an instance of memcached_st from multiple threads at the same time. If you want to…

NAME libmemcached_examples – libmemcached Documentation Examples for libmemcached DESCRIPTION For full examples, test cases are found in tests/*.c in the main distribution. These are always up to date, and are used for each test run of the library. CONNECTING TO SERVERS const char *config_string= “–SERVER=host10.example.com –SERVER=host11.example.com –SERVER=host10.example.com” memcached_st *memc= memcached(config_string, strlen(config_string); { … } memcached_free(memc);…

NAME libmemcached_configuration – libmemcached Documentation SYNOPSIS #include <libmemcached-1.0/memcached.h> LIBMEMCACHED memcached_st *memcached(const char *string, size_t string_length) memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length, char *error_buffer, size_t error_buffer_size) Compile and link with -lmemcached DESCRIPTION Libmemcached implements a custom language for configuring and modifying servers. By passing in an option string you can generate a memcached_st object that you can use in your application directly….

NAME libmemcached_check_configuration – libmemcached Documentation SYNOPSIS #include <libmemcached-1.0/memcached.h> LIBMEMCACHED memcached_st *memcached(const char *string, size_t string_length) memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length, char *error_buffer, size_t error_buffer_size) Compile and link with -lmemcached DESCRIPTION Libmemcached implements a custom language for configuring and modifying servers. By passing in an option string you can generate a memcached_st object that you can use in your application directly….