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erlang-doc-R15B-03.3.fc17.noarch.rpm

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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/kernel-2.15.3.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>Kernel</strong><br><strong>Reference Manual</strong><br><small>Version 2.15.3</small></p>
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<li title="kernel (App)"><a href="kernel_app.html">kernel (App)
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<li id="no" title="application " expanded="false">application<ul>
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<li title="get_all_env-0"><a href="application.html#get_all_env-0">get_all_env/0</a></li>
<li title="get_all_env-1"><a href="application.html#get_all_env-1">get_all_env/1</a></li>
<li title="get_all_key-0"><a href="application.html#get_all_key-0">get_all_key/0</a></li>
<li title="get_all_key-1"><a href="application.html#get_all_key-1">get_all_key/1</a></li>
<li title="get_application-0"><a href="application.html#get_application-0">get_application/0</a></li>
<li title="get_application-1"><a href="application.html#get_application-1">get_application/1</a></li>
<li title="get_env-1"><a href="application.html#get_env-1">get_env/1</a></li>
<li title="get_env-2"><a href="application.html#get_env-2">get_env/2</a></li>
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<li title="load-1"><a href="application.html#load-1">load/1</a></li>
<li title="load-2"><a href="application.html#load-2">load/2</a></li>
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<li title="permit-2"><a href="application.html#permit-2">permit/2</a></li>
<li title="set_env-3"><a href="application.html#set_env-3">set_env/3</a></li>
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<li title="Module:start_phase-3"><a href="application.html#Module:start_phase-3">Module:start_phase/3</a></li>
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<li title="objfile_extension-0"><a href="code.html#objfile_extension-0">objfile_extension/0</a></li>
<li title="stick_dir-1"><a href="code.html#stick_dir-1">stick_dir/1</a></li>
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<li title="clash-0"><a href="code.html#clash-0">clash/0</a></li>
<li title="is_module_native-1"><a href="code.html#is_module_native-1">is_module_native/1</a></li>
</ul>
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<li id="no" title="disk_log " expanded="false">disk_log<ul>
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<li title="accessible_logs-0"><a href="disk_log.html#accessible_logs-0">accessible_logs/0</a></li>
<li title="alog-2"><a href="disk_log.html#alog-2">alog/2</a></li>
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<li title="balog_terms-2"><a href="disk_log.html#balog_terms-2">balog_terms/2</a></li>
<li title="block-1"><a href="disk_log.html#block-1">block/1</a></li>
<li title="block-2"><a href="disk_log.html#block-2">block/2</a></li>
<li title="change_header-2"><a href="disk_log.html#change_header-2">change_header/2</a></li>
<li title="change_notify-3"><a href="disk_log.html#change_notify-3">change_notify/3</a></li>
<li title="change_size-2"><a href="disk_log.html#change_size-2">change_size/2</a></li>
<li title="chunk-2"><a href="disk_log.html#chunk-2">chunk/2</a></li>
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<li title="chunk_step-3"><a href="disk_log.html#chunk_step-3">chunk_step/3</a></li>
<li title="close-1"><a href="disk_log.html#close-1">close/1</a></li>
<li title="format_error-1"><a href="disk_log.html#format_error-1">format_error/1</a></li>
<li title="inc_wrap_file-1"><a href="disk_log.html#inc_wrap_file-1">inc_wrap_file/1</a></li>
<li title="info-1"><a href="disk_log.html#info-1">info/1</a></li>
<li title="lclose-1"><a href="disk_log.html#lclose-1">lclose/1</a></li>
<li title="lclose-2"><a href="disk_log.html#lclose-2">lclose/2</a></li>
<li title="log-2"><a href="disk_log.html#log-2">log/2</a></li>
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<li title="log_terms-2"><a href="disk_log.html#log_terms-2">log_terms/2</a></li>
<li title="blog_terms-2"><a href="disk_log.html#blog_terms-2">blog_terms/2</a></li>
<li title="open-1"><a href="disk_log.html#open-1">open/1</a></li>
<li title="pid2name-1"><a href="disk_log.html#pid2name-1">pid2name/1</a></li>
<li title="reopen-2"><a href="disk_log.html#reopen-2">reopen/2</a></li>
<li title="reopen-3"><a href="disk_log.html#reopen-3">reopen/3</a></li>
<li title="breopen-3"><a href="disk_log.html#breopen-3">breopen/3</a></li>
<li title="sync-1"><a href="disk_log.html#sync-1">sync/1</a></li>
<li title="truncate-1"><a href="disk_log.html#truncate-1">truncate/1</a></li>
<li title="truncate-2"><a href="disk_log.html#truncate-2">truncate/2</a></li>
<li title="btruncate-2"><a href="disk_log.html#btruncate-2">btruncate/2</a></li>
<li title="unblock-1"><a href="disk_log.html#unblock-1">unblock/1</a></li>
</ul>
</li>
<li id="no" title="erl_boot_server " expanded="false">erl_boot_server<ul>
<li><a href="erl_boot_server.html">
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<li title="start-1"><a href="erl_boot_server.html#start-1">start/1</a></li>
<li title="start_link-1"><a href="erl_boot_server.html#start_link-1">start_link/1</a></li>
<li title="add_slave-1"><a href="erl_boot_server.html#add_slave-1">add_slave/1</a></li>
<li title="delete_slave-1"><a href="erl_boot_server.html#delete_slave-1">delete_slave/1</a></li>
<li title="which_slaves-0"><a href="erl_boot_server.html#which_slaves-0">which_slaves/0</a></li>
</ul>
</li>
<li id="no" title="erl_ddll " expanded="false">erl_ddll<ul>
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<li title="demonitor-1"><a href="erl_ddll.html#demonitor-1">demonitor/1</a></li>
<li title="info-0"><a href="erl_ddll.html#info-0">info/0</a></li>
<li title="info-1"><a href="erl_ddll.html#info-1">info/1</a></li>
<li title="info-2"><a href="erl_ddll.html#info-2">info/2</a></li>
<li title="load-2"><a href="erl_ddll.html#load-2">load/2</a></li>
<li title="load_driver-2"><a href="erl_ddll.html#load_driver-2">load_driver/2</a></li>
<li title="monitor-2"><a href="erl_ddll.html#monitor-2">monitor/2</a></li>
<li title="reload-2"><a href="erl_ddll.html#reload-2">reload/2</a></li>
<li title="reload_driver-2"><a href="erl_ddll.html#reload_driver-2">reload_driver/2</a></li>
<li title="try_load-3"><a href="erl_ddll.html#try_load-3">try_load/3</a></li>
<li title="try_unload-2"><a href="erl_ddll.html#try_unload-2">try_unload/2</a></li>
<li title="unload-1"><a href="erl_ddll.html#unload-1">unload/1</a></li>
<li title="unload_driver-1"><a href="erl_ddll.html#unload_driver-1">unload_driver/1</a></li>
<li title="loaded_drivers-0"><a href="erl_ddll.html#loaded_drivers-0">loaded_drivers/0</a></li>
<li title="format_error-1"><a href="erl_ddll.html#format_error-1">format_error/1</a></li>
</ul>
</li>
<li title="erl_prim_loader"><a href="erl_prim_loader.html">erl_prim_loader</a></li>
<li title="erlang"><a href="erlang.html">erlang</a></li>
<li id="no" title="error_handler " expanded="false">error_handler<ul>
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<li title="undefined_function-3"><a href="error_handler.html#undefined_function-3">undefined_function/3</a></li>
<li title="undefined_lambda-3"><a href="error_handler.html#undefined_lambda-3">undefined_lambda/3</a></li>
</ul>
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<li id="no" title="error_logger " expanded="false">error_logger<ul>
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<li title="error_msg-1"><a href="error_logger.html#error_msg-1">error_msg/1</a></li>
<li title="error_msg-2"><a href="error_logger.html#error_msg-2">error_msg/2</a></li>
<li title="format-2"><a href="error_logger.html#format-2">format/2</a></li>
<li title="error_report-1"><a href="error_logger.html#error_report-1">error_report/1</a></li>
<li title="error_report-2"><a href="error_logger.html#error_report-2">error_report/2</a></li>
<li title="warning_map-0"><a href="error_logger.html#warning_map-0">warning_map/0</a></li>
<li title="warning_msg-1"><a href="error_logger.html#warning_msg-1">warning_msg/1</a></li>
<li title="warning_msg-2"><a href="error_logger.html#warning_msg-2">warning_msg/2</a></li>
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<li title="tty-1"><a href="error_logger.html#tty-1">tty/1</a></li>
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<li title="read_link-1"><a href="file.html#read_link-1">read_link/1</a></li>
<li title="read_link_info-1"><a href="file.html#read_link_info-1">read_link_info/1</a></li>
<li title="read_link_info-2"><a href="file.html#read_link_info-2">read_link_info/2</a></li>
<li title="rename-2"><a href="file.html#rename-2">rename/2</a></li>
<li title="script-1"><a href="file.html#script-1">script/1</a></li>
<li title="script-2"><a href="file.html#script-2">script/2</a></li>
<li title="set_cwd-1"><a href="file.html#set_cwd-1">set_cwd/1</a></li>
<li title="sync-1"><a href="file.html#sync-1">sync/1</a></li>
<li title="datasync-1"><a href="file.html#datasync-1">datasync/1</a></li>
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<li title="sendfile-2"><a href="file.html#sendfile-2">sendfile/2</a></li>
<li title="sendfile-5"><a href="file.html#sendfile-5">sendfile/5</a></li>
<li title="write-2"><a href="file.html#write-2">write/2</a></li>
<li title="write_file-2"><a href="file.html#write_file-2">write_file/2</a></li>
<li title="write_file-3"><a href="file.html#write_file-3">write_file/3</a></li>
<li title="write_file_info-2"><a href="file.html#write_file_info-2">write_file_info/2</a></li>
<li title="write_file_info-3"><a href="file.html#write_file_info-3">write_file_info/3</a></li>
</ul>
</li>
<li id="no" title="gen_tcp " expanded="false">gen_tcp<ul>
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                  Top of manual page
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<li title="connect-3"><a href="gen_tcp.html#connect-3">connect/3</a></li>
<li title="connect-4"><a href="gen_tcp.html#connect-4">connect/4</a></li>
<li title="listen-2"><a href="gen_tcp.html#listen-2">listen/2</a></li>
<li title="accept-1"><a href="gen_tcp.html#accept-1">accept/1</a></li>
<li title="accept-2"><a href="gen_tcp.html#accept-2">accept/2</a></li>
<li title="send-2"><a href="gen_tcp.html#send-2">send/2</a></li>
<li title="recv-2"><a href="gen_tcp.html#recv-2">recv/2</a></li>
<li title="recv-3"><a href="gen_tcp.html#recv-3">recv/3</a></li>
<li title="controlling_process-2"><a href="gen_tcp.html#controlling_process-2">controlling_process/2</a></li>
<li title="close-1"><a href="gen_tcp.html#close-1">close/1</a></li>
<li title="shutdown-2"><a href="gen_tcp.html#shutdown-2">shutdown/2</a></li>
</ul>
</li>
<li id="no" title="gen_udp " expanded="false">gen_udp<ul>
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<li title="open-1"><a href="gen_udp.html#open-1">open/1</a></li>
<li title="open-2"><a href="gen_udp.html#open-2">open/2</a></li>
<li title="send-4"><a href="gen_udp.html#send-4">send/4</a></li>
<li title="recv-2"><a href="gen_udp.html#recv-2">recv/2</a></li>
<li title="recv-3"><a href="gen_udp.html#recv-3">recv/3</a></li>
<li title="controlling_process-2"><a href="gen_udp.html#controlling_process-2">controlling_process/2</a></li>
<li title="close-1"><a href="gen_udp.html#close-1">close/1</a></li>
</ul>
</li>
<li id="no" title="gen_sctp " expanded="false">gen_sctp<ul>
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<li title="abort-2"><a href="gen_sctp.html#abort-2">abort/2</a></li>
<li title="close-1"><a href="gen_sctp.html#close-1">close/1</a></li>
<li title="connect-4"><a href="gen_sctp.html#connect-4">connect/4</a></li>
<li title="connect-5"><a href="gen_sctp.html#connect-5">connect/5</a></li>
<li title="connect_init-4"><a href="gen_sctp.html#connect_init-4">connect_init/4</a></li>
<li title="connect_init-5"><a href="gen_sctp.html#connect_init-5">connect_init/5</a></li>
<li title="controlling_process-2"><a href="gen_sctp.html#controlling_process-2">controlling_process/2</a></li>
<li title="eof-2"><a href="gen_sctp.html#eof-2">eof/2</a></li>
<li title="listen-2"><a href="gen_sctp.html#listen-2">listen/2</a></li>
<li title="open-0"><a href="gen_sctp.html#open-0">open/0</a></li>
<li title="open-1"><a href="gen_sctp.html#open-1">open/1</a></li>
<li title="open-2"><a href="gen_sctp.html#open-2">open/2</a></li>
<li title="peeloff-2"><a href="gen_sctp.html#peeloff-2">peeloff/2</a></li>
<li title="recv-1"><a href="gen_sctp.html#recv-1">recv/1</a></li>
<li title="recv-2"><a href="gen_sctp.html#recv-2">recv/2</a></li>
<li title="send-3"><a href="gen_sctp.html#send-3">send/3</a></li>
<li title="send-4"><a href="gen_sctp.html#send-4">send/4</a></li>
<li title="error_string-1"><a href="gen_sctp.html#error_string-1">error_string/1</a></li>
</ul>
</li>
<li id="no" title="global " expanded="false">global<ul>
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<li title="del_lock-1"><a href="global.html#del_lock-1">del_lock/1</a></li>
<li title="del_lock-2"><a href="global.html#del_lock-2">del_lock/2</a></li>
<li title="notify_all_name-3"><a href="global.html#notify_all_name-3">notify_all_name/3</a></li>
<li title="random_exit_name-3"><a href="global.html#random_exit_name-3">random_exit_name/3</a></li>
<li title="random_notify_name-3"><a href="global.html#random_notify_name-3">random_notify_name/3</a></li>
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<li title="register_name-3"><a href="global.html#register_name-3">register_name/3</a></li>
<li title="registered_names-0"><a href="global.html#registered_names-0">registered_names/0</a></li>
<li title="re_register_name-2"><a href="global.html#re_register_name-2">re_register_name/2</a></li>
<li title="re_register_name-3"><a href="global.html#re_register_name-3">re_register_name/3</a></li>
<li title="send-2"><a href="global.html#send-2">send/2</a></li>
<li title="set_lock-1"><a href="global.html#set_lock-1">set_lock/1</a></li>
<li title="set_lock-2"><a href="global.html#set_lock-2">set_lock/2</a></li>
<li title="set_lock-3"><a href="global.html#set_lock-3">set_lock/3</a></li>
<li title="sync-0"><a href="global.html#sync-0">sync/0</a></li>
<li title="trans-2"><a href="global.html#trans-2">trans/2</a></li>
<li title="trans-3"><a href="global.html#trans-3">trans/3</a></li>
<li title="trans-4"><a href="global.html#trans-4">trans/4</a></li>
<li title="unregister_name-1"><a href="global.html#unregister_name-1">unregister_name/1</a></li>
<li title="whereis_name-1"><a href="global.html#whereis_name-1">whereis_name/1</a></li>
</ul>
</li>
<li id="no" title="global_group " expanded="false">global_group<ul>
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<li title="global_groups-0"><a href="global_group.html#global_groups-0">global_groups/0</a></li>
<li title="info-0"><a href="global_group.html#info-0">info/0</a></li>
<li title="monitor_nodes-1"><a href="global_group.html#monitor_nodes-1">monitor_nodes/1</a></li>
<li title="own_nodes-0"><a href="global_group.html#own_nodes-0">own_nodes/0</a></li>
<li title="registered_names-1"><a href="global_group.html#registered_names-1">registered_names/1</a></li>
<li title="send-2"><a href="global_group.html#send-2">send/2</a></li>
<li title="send-3"><a href="global_group.html#send-3">send/3</a></li>
<li title="sync-0"><a href="global_group.html#sync-0">sync/0</a></li>
<li title="whereis_name-1"><a href="global_group.html#whereis_name-1">whereis_name/1</a></li>
<li title="whereis_name-2"><a href="global_group.html#whereis_name-2">whereis_name/2</a></li>
</ul>
</li>
<li id="no" title="heart " expanded="false">heart<ul>
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<li title="set_cmd-1"><a href="heart.html#set_cmd-1">set_cmd/1</a></li>
<li title="clear_cmd-0"><a href="heart.html#clear_cmd-0">clear_cmd/0</a></li>
<li title="get_cmd-0"><a href="heart.html#get_cmd-0">get_cmd/0</a></li>
</ul>
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<li id="no" title="inet " expanded="false">inet<ul>
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<li title="close-1"><a href="inet.html#close-1">close/1</a></li>
<li title="get_rc-0"><a href="inet.html#get_rc-0">get_rc/0</a></li>
<li title="format_error-1"><a href="inet.html#format_error-1">format_error/1</a></li>
<li title="getaddr-2"><a href="inet.html#getaddr-2">getaddr/2</a></li>
<li title="getaddrs-2"><a href="inet.html#getaddrs-2">getaddrs/2</a></li>
<li title="gethostbyaddr-1"><a href="inet.html#gethostbyaddr-1">gethostbyaddr/1</a></li>
<li title="gethostbyname-1"><a href="inet.html#gethostbyname-1">gethostbyname/1</a></li>
<li title="gethostbyname-2"><a href="inet.html#gethostbyname-2">gethostbyname/2</a></li>
<li title="gethostname-0"><a href="inet.html#gethostname-0">gethostname/0</a></li>
<li title="getifaddrs-0"><a href="inet.html#getifaddrs-0">getifaddrs/0</a></li>
<li title="getopts-2"><a href="inet.html#getopts-2">getopts/2</a></li>
<li title="getstat-1"><a href="inet.html#getstat-1">getstat/1</a></li>
<li title="getstat-2"><a href="inet.html#getstat-2">getstat/2</a></li>
<li title="peername-1"><a href="inet.html#peername-1">peername/1</a></li>
<li title="port-1"><a href="inet.html#port-1">port/1</a></li>
<li title="sockname-1"><a href="inet.html#sockname-1">sockname/1</a></li>
<li title="setopts-2"><a href="inet.html#setopts-2">setopts/2</a></li>
</ul>
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<li id="no" title="inet_res " expanded="false">inet_res<ul>
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<li title="getbyname-2"><a href="inet_res.html#getbyname-2">getbyname/2</a></li>
<li title="getbyname-3"><a href="inet_res.html#getbyname-3">getbyname/3</a></li>
<li title="gethostbyaddr-1"><a href="inet_res.html#gethostbyaddr-1">gethostbyaddr/1</a></li>
<li title="gethostbyaddr-2"><a href="inet_res.html#gethostbyaddr-2">gethostbyaddr/2</a></li>
<li title="gethostbyname-1"><a href="inet_res.html#gethostbyname-1">gethostbyname/1</a></li>
<li title="gethostbyname-2"><a href="inet_res.html#gethostbyname-2">gethostbyname/2</a></li>
<li title="gethostbyname-3"><a href="inet_res.html#gethostbyname-3">gethostbyname/3</a></li>
<li title="lookup-3"><a href="inet_res.html#lookup-3">lookup/3</a></li>
<li title="lookup-4"><a href="inet_res.html#lookup-4">lookup/4</a></li>
<li title="lookup-5"><a href="inet_res.html#lookup-5">lookup/5</a></li>
<li title="resolve-3"><a href="inet_res.html#resolve-3">resolve/3</a></li>
<li title="resolve-4"><a href="inet_res.html#resolve-4">resolve/4</a></li>
<li title="resolve-5"><a href="inet_res.html#resolve-5">resolve/5</a></li>
<li title="nslookup-3"><a href="inet_res.html#nslookup-3">nslookup/3</a></li>
<li title="nslookup-4"><a href="inet_res.html#nslookup-4">nslookup/4</a></li>
<li title="nnslookup-4"><a href="inet_res.html#nnslookup-4">nnslookup/4</a></li>
<li title="nnslookup-5"><a href="inet_res.html#nnslookup-5">nnslookup/5</a></li>
</ul>
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<li title="init"><a href="init.html">init</a></li>
<li id="loadscrollpos" title="net_adm " expanded="true">net_adm<ul>
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<li title="dns_hostname-1"><a href="net_adm.html#dns_hostname-1">dns_hostname/1</a></li>
<li title="host_file-0"><a href="net_adm.html#host_file-0">host_file/0</a></li>
<li title="localhost-0"><a href="net_adm.html#localhost-0">localhost/0</a></li>
<li title="names-0"><a href="net_adm.html#names-0">names/0</a></li>
<li title="names-1"><a href="net_adm.html#names-1">names/1</a></li>
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</ul>
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<li id="no" title="net_kernel " expanded="false">net_kernel<ul>
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<li title="allow-1"><a href="net_kernel.html#allow-1">allow/1</a></li>
<li title="connect_node-1"><a href="net_kernel.html#connect_node-1">connect_node/1</a></li>
<li title="monitor_nodes-1"><a href="net_kernel.html#monitor_nodes-1">monitor_nodes/1</a></li>
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<li title="get_net_ticktime-0"><a href="net_kernel.html#get_net_ticktime-0">get_net_ticktime/0</a></li>
<li title="set_net_ticktime-1"><a href="net_kernel.html#set_net_ticktime-1">set_net_ticktime/1</a></li>
<li title="set_net_ticktime-2"><a href="net_kernel.html#set_net_ticktime-2">set_net_ticktime/2</a></li>
<li title="start-1"><a href="net_kernel.html#start-1">start/1</a></li>
<li title="start-1"><a href="net_kernel.html#start-1">start/1</a></li>
<li title="start-1"><a href="net_kernel.html#start-1">start/1</a></li>
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<li id="no" title="os " expanded="false">os<ul>
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<li title="cmd-1"><a href="os.html#cmd-1">cmd/1</a></li>
<li title="find_executable-1"><a href="os.html#find_executable-1">find_executable/1</a></li>
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<li title="getenv-0"><a href="os.html#getenv-0">getenv/0</a></li>
<li title="getenv-1"><a href="os.html#getenv-1">getenv/1</a></li>
<li title="getpid-0"><a href="os.html#getpid-0">getpid/0</a></li>
<li title="putenv-2"><a href="os.html#putenv-2">putenv/2</a></li>
<li title="timestamp-0"><a href="os.html#timestamp-0">timestamp/0</a></li>
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<li id="no" title="pg2 " expanded="false">pg2<ul>
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<li title="create-1"><a href="pg2.html#create-1">create/1</a></li>
<li title="delete-1"><a href="pg2.html#delete-1">delete/1</a></li>
<li title="get_closest_pid-1"><a href="pg2.html#get_closest_pid-1">get_closest_pid/1</a></li>
<li title="get_members-1"><a href="pg2.html#get_members-1">get_members/1</a></li>
<li title="get_local_members-1"><a href="pg2.html#get_local_members-1">get_local_members/1</a></li>
<li title="join-2"><a href="pg2.html#join-2">join/2</a></li>
<li title="leave-2"><a href="pg2.html#leave-2">leave/2</a></li>
<li title="which_groups-0"><a href="pg2.html#which_groups-0">which_groups/0</a></li>
<li title="start-0"><a href="pg2.html#start-0">start/0</a></li>
<li title="start_link-0"><a href="pg2.html#start_link-0">start_link/0</a></li>
</ul>
</li>
<li id="no" title="rpc " expanded="false">rpc<ul>
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<li title="call-4"><a href="rpc.html#call-4">call/4</a></li>
<li title="call-5"><a href="rpc.html#call-5">call/5</a></li>
<li title="block_call-4"><a href="rpc.html#block_call-4">block_call/4</a></li>
<li title="block_call-5"><a href="rpc.html#block_call-5">block_call/5</a></li>
<li title="async_call-4"><a href="rpc.html#async_call-4">async_call/4</a></li>
<li title="yield-1"><a href="rpc.html#yield-1">yield/1</a></li>
<li title="nb_yield-1"><a href="rpc.html#nb_yield-1">nb_yield/1</a></li>
<li title="nb_yield-2"><a href="rpc.html#nb_yield-2">nb_yield/2</a></li>
<li title="multicall-3"><a href="rpc.html#multicall-3">multicall/3</a></li>
<li title="multicall-4"><a href="rpc.html#multicall-4">multicall/4</a></li>
<li title="multicall-5"><a href="rpc.html#multicall-5">multicall/5</a></li>
<li title="cast-4"><a href="rpc.html#cast-4">cast/4</a></li>
<li title="eval_everywhere-3"><a href="rpc.html#eval_everywhere-3">eval_everywhere/3</a></li>
<li title="eval_everywhere-4"><a href="rpc.html#eval_everywhere-4">eval_everywhere/4</a></li>
<li title="abcast-2"><a href="rpc.html#abcast-2">abcast/2</a></li>
<li title="abcast-3"><a href="rpc.html#abcast-3">abcast/3</a></li>
<li title="sbcast-2"><a href="rpc.html#sbcast-2">sbcast/2</a></li>
<li title="sbcast-3"><a href="rpc.html#sbcast-3">sbcast/3</a></li>
<li title="server_call-4"><a href="rpc.html#server_call-4">server_call/4</a></li>
<li title="multi_server_call-2"><a href="rpc.html#multi_server_call-2">multi_server_call/2</a></li>
<li title="multi_server_call-3"><a href="rpc.html#multi_server_call-3">multi_server_call/3</a></li>
<li title="safe_multi_server_call-2"><a href="rpc.html#safe_multi_server_call-2">safe_multi_server_call/2</a></li>
<li title="safe_multi_server_call-3"><a href="rpc.html#safe_multi_server_call-3">safe_multi_server_call/3</a></li>
<li title="parallel_eval-1"><a href="rpc.html#parallel_eval-1">parallel_eval/1</a></li>
<li title="pmap-3"><a href="rpc.html#pmap-3">pmap/3</a></li>
<li title="pinfo-1"><a href="rpc.html#pinfo-1">pinfo/1</a></li>
<li title="pinfo-2"><a href="rpc.html#pinfo-2">pinfo/2</a></li>
</ul>
</li>
<li id="no" title="seq_trace " expanded="false">seq_trace<ul>
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<li title="set_token-1"><a href="seq_trace.html#set_token-1">set_token/1</a></li>
<li title="set_token-2"><a href="seq_trace.html#set_token-2">set_token/2</a></li>
<li title="get_token-0"><a href="seq_trace.html#get_token-0">get_token/0</a></li>
<li title="get_token-1"><a href="seq_trace.html#get_token-1">get_token/1</a></li>
<li title="print-1"><a href="seq_trace.html#print-1">print/1</a></li>
<li title="print-2"><a href="seq_trace.html#print-2">print/2</a></li>
<li title="reset_trace-0"><a href="seq_trace.html#reset_trace-0">reset_trace/0</a></li>
<li title="set_system_tracer-1"><a href="seq_trace.html#set_system_tracer-1">set_system_tracer/1</a></li>
<li title="get_system_tracer-0"><a href="seq_trace.html#get_system_tracer-0">get_system_tracer/0</a></li>
</ul>
</li>
<li title="user"><a href="user.html">user</a></li>
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<li title="chunk-1"><a href="wrap_log_reader.html#chunk-1">chunk/1</a></li>
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<li title="close-1"><a href="wrap_log_reader.html#close-1">close/1</a></li>
<li title="open-1"><a href="wrap_log_reader.html#open-1">open/1</a></li>
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</ul>
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<li title="zlib"><a href="zlib.html">zlib</a></li>
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<!-- refpage --><center><h1>net_adm</h1></center>
  
  <h3>MODULE</h3>
<div class="REFBODY">net_adm</div>
  <h3>MODULE SUMMARY</h3>
<div class="REFBODY">Various Erlang Net Administration Routines</div>
  <h3>DESCRIPTION</h3>
<div class="REFBODY"><p>
    <p>This module contains various network utility functions.</p>
  </p></div>
  <h3>EXPORTS</h3>
    <p><a name="dns_hostname-1"></a><span class="bold_code">dns_hostname(Host) -&gt; {ok, Name} | {error, Host}</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Host = atom() | string()</span></div>
<div class="REFTYPES"><span class="bold_code">Name = string()</span></div>
</div></p>
<div class="REFBODY"><p>
        <p>Returns the official name of <span class="code">Host</span>, or
          <span class="code">{error, Host}</span> if no such name is found. See also
          <span class="code">inet(3)</span>.</p>
      </p></div>
    <p><a name="host_file-0"></a><span class="bold_code">host_file() -&gt; Hosts | {error, Reason}</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Hosts = [Host :: atom()]</span></div>
<div class="REFTYPES"><span class="bold_code">Reason = <span class="bold_code"><a href="file.html#type-posix">file:posix()</a></span><br>       | badarg<br>       | terminated<br>       | system_limit<br>       | {Line :: integer(), Mod :: module(), Term :: term()}</span></div>
</div></p>
<div class="REFBODY"><p>
        <p>Reads the <span class="code">.hosts.erlang</span> file, see the section
          <strong>Files</strong> below. Returns the hosts in this file as a
          list, or returns <span class="code">{error, Reason}</span> if the file could not
          be read or the Erlang terms on the file could not be interpreted.</p>
      </p></div>
    <p><a name="localhost-0"></a><span class="bold_code">localhost() -&gt; Name</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Name = string()</span></div>
</div></p>
<div class="REFBODY"><p>
        <p>Returns the name of the local host. If Erlang was started
          with the <span class="code">-name</span> command line flag, <span class="code">Name</span> is
          the fully qualified name.</p>
      </p></div>
    <p><a name="names-0"></a><span class="bold_code">names() -&gt; {ok, [{Name, Port}]} | {error, Reason}</span><br><a name="names-1"></a><span class="bold_code">names(Host) -&gt; {ok, [{Name, Port}]} | {error, Reason}</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Host = atom() | string()</span></div>
<div class="REFTYPES"><span class="bold_code">Name = string()</span></div>
<div class="REFTYPES"><span class="bold_code">Port = integer() &gt;= 0</span></div>
<div class="REFTYPES"><span class="bold_code">Reason = address | <span class="bold_code"><a href="file.html#type-posix">file:posix()</a></span></span></div>
</div></p>
<div class="REFBODY"><p>
        <p>Similar to <span class="code">epmd -names</span>, see <span class="code">epmd(1)</span>.
          <span class="code">Host</span> defaults to the local host. Returns the names and
          associated port numbers of the Erlang nodes that <span class="code">epmd</span>
          at the specified host has registered.</p>
        <p>Returns <span class="code">{error, address}</span> if <span class="code">epmd</span> is not
          running.</p>
        <div class="example"><pre>
(arne@dunn)1&gt; <span class="bold_code">net_adm:names().</span>
{ok,[{"arne",40262}]}</pre></div>
      </p></div>
    <p><a name="ping-1"></a><span class="bold_code">ping(Node) -&gt; pong | pang</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Node = atom()</span></div>
</div></p>
<div class="REFBODY"><p>
        <p>Tries to set up a connection to <span class="code">Node</span>. Returns
          <span class="code">pang</span> if it fails, or <span class="code">pong</span> if it is successful.</p>
      </p></div>
    <p><a name="world-0"></a><span class="bold_code">world() -&gt; [node()]</span><br><a name="world-1"></a><span class="bold_code">world(Arg) -&gt; [node()]</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Arg = verbosity()</span></div>
<div class="REFTYPES">
      <span class="bold_code">verbosity() = silent | verbose</span><br>
</div>
</div></p>
<div class="REFBODY"><p>
        <p>This function calls <span class="code">names(Host)</span> for all hosts which
          are specified in the Erlang host file <span class="code">.hosts.erlang</span>,
          collects the replies and then evaluates <span class="code">ping(Node)</span> on
          all those nodes. Returns the list of all nodes that were,
	  successfully pinged.</p>
        <p><span class="code">Arg</span> defaults to <span class="code">silent</span>.
	 If <span class="code">Arg == verbose</span>, the function writes information about which
          nodes it is pinging to stdout.</p>
        <p>This function can be useful when a node is started, and
          the names of the other nodes in the network are not initially
          known.</p>
        <p>Failure: <span class="code">{error, Reason}</span> if <span class="code">host_file()</span>
          returns <span class="code">{error, Reason}</span>.</p>
      </p></div>
    <p><a name="world_list-1"></a><span class="bold_code">world_list(Hosts) -&gt; [node()]</span><br><a name="world_list-2"></a><span class="bold_code">world_list(Hosts, Arg) -&gt; [node()]</span><br><div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES"><span class="bold_code">Hosts = [atom()]</span></div>
<div class="REFTYPES"><span class="bold_code">Arg = verbosity()</span></div>
<div class="REFTYPES">
      <span class="bold_code">verbosity() = silent | verbose</span><br>
</div>
</div></p>
<div class="REFBODY"><p>
        <p>As <span class="code">world/0,1</span>, but the hosts are given as argument
          instead of being read from <span class="code">.hosts.erlang</span>.</p>
      </p></div>
  

  <h3><a name="id131032">Files</a></h3>
<div class="REFBODY">
    
    <p>The <span class="code">.hosts.erlang</span> file consists of a number of host names
      written as Erlang terms. It is looked for in the current work
      directory, the user's home directory, and <span class="code">$OTP_ROOT</span>
      (the root directory of Erlang/OTP), in that order.</p>
    <p>The format of the <span class="code">.hosts.erlang</span> file must be one host
      name per line. The host names must be within quotes as shown in
      the following example:</p>
    <div class="example"><pre>
'super.eua.ericsson.se'.
'renat.eua.ericsson.se'.
'grouse.eua.ericsson.se'.
'gauffin1.eua.ericsson.se'.
^ (new line)</pre></div>
  </div>
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