Linux Manuals session 3

libnutclient_variables, nutclient_get_device_variables, nutclient_get_device_rw_variables, nutclient_has_device_variable, nutclient_get_device_variable_description, nutclient_get_device_variable_values, nutclient_set_device_variable_value, nutclient_set_device_variable_values – Variable related functions in Network UPS Tools high-level client access library Synopsis#include <nutclient.h>typedef void* NUTCLIENT_t;strarr nutclient_get_device_variables(NUTCLIENT_t client, const char* dev); strarr nutclient_get_device_rw_variables(NUTCLIENT_t client, const char* dev); int nutclient_has_device_variable(NUTCLIENT_t client, const char* dev, const char* var); char* nutclient_get_device_variable_description(NUTCLIENT_t client, const char* dev, const char* var); strarr nutclient_get_device_variable_values(NUTCLIENT_t…

libnutclient_tcp, nutclient_tcp_create_client, nutclient_tcp_is_connected, nutclient_tcp_disconnect, nutclient_tcp_reconnect, nutclient_tcp_set_timeout, nutclient_tcp_get_timeout – TCP protocol related function for Network UPS Tools high-level client access library Synopsis#include <nutclient.h>typedef NUTCLIENT_t NUTCLIENT_TCP_t;NUTCLIENT_TCP_t nutclient_tcp_create_client(const char* host, unsigned short port); int nutclient_tcp_is_connected(NUTCLIENT_TCP_t client); void nutclient_tcp_disconnect(NUTCLIENT_TCP_t client); int nutclient_tcp_reconnect(NUTCLIENT_TCP_t client); void nutclient_tcp_set_timeout(NUTCLIENT_TCP_t client, long timeout); long nutclient_tcp_get_timeout(NUTCLIENT_TCP_t client);DescriptionThese functions allow to manage connections to upsd(8) using…

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); void nutclient_device_forced_shutdown(NUTCLIENT_t client, const…

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);DescriptionThe nutclient_destroy() function destroys a NUTCLIENT_t or derived (like NUTCLIENT_TCP_t) connection object, and frees allocated memory. The strarr type represents an array of C strings…

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);DescriptionThese functions allow to manage devices. The nutclient_get_devices() function retrieve the list of devices monitored by a client. The returned strarr must…

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, const char* cmd);DescriptionThese functions…

libnutclient – Network UPS Tools high-level client access library Synopsis#include <nutclient.h>Refer to this file for more information.DescriptionThe 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 commands. Unlike upsclient(3), all low-level…

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 *buf, int…

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, FILE *fp);…

libnetpbm_ug – netpbm sample code DescriptionThe Libnetpbm programming library is part of Netpbm(1) ExampleHere 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 values of every…

Table Of Contents Namelibnetpbm_image – overview of netpbm image-processing functions DescriptionThis 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 PNM classes…

Table Of Contents Namelibnetpbm_draw \- Libnetpbm PPM Drawing Function Manual DescriptionThis 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 in this…

libnetpbm – general introduction to the netpbm library Descriptionlibnetpbm 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 a C…

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, int (*filter)(struct…

libnet – "libpwrite" Network Routine Library DescriptionThe 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 you can…

libmosquitto – MQTT version 3.1 client library DescriptionThis 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 not documented…

libmng – Multiple-image Network Graphics (MNG) Reference Library 1.0.9 Synopsis #include <libmng.h> DescriptionThe 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), a color-management…

GNU libmicrohttpd – library for embedding HTTP servers Synopsis #include <microhttpd.h> DescriptionGNU 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 on the MHD…

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

libmemcached_examples – libmemcached Documentation Examples for libmemcached DescriptionFor 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 Serversconst 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);In the above code…