{"id":39479,"date":"2019-10-31T22:33:41","date_gmt":"2019-10-31T19:33:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/5-sposobov-poleznogo-ispolzovaniya-raspberry-pi\/"},"modified":"2019-10-31T22:33:41","modified_gmt":"2019-10-31T19:33:41","slug":"5-sposobov-poleznogo-ispolzovaniya-raspberry-pi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/5-sposobov-poleznogo-ispolzovaniya-raspberry-pi","title":{"rendered":"5 moduri utile de utilizare a Raspberry Pi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Salut, Habr.<\/p>\n<p>Probabil c\u0103 aproape toat\u0103 lumea are acas\u0103 un Raspberry Pi, iar riscul este c\u0103 multe dintre ele z\u0103bovesc f\u0103r\u0103 s\u0103 fie folosite. Totu\u0219i, Raspberry Pi nu este doar un dispozitiv valoros, ci \u0219i un computer fanless destul de puternic care ruleaz\u0103 Linux. Ast\u0103zi vom explora oportunit\u0103\u021bile utile ale Raspberry Pi, pentru utilizarea c\u0103rora nu va trebui s\u0103 scriem cod. <br \/>\n<img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/e69119cc5036df2ca55ee5cea97fe30d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nPentru cei interesa\u021bi, detalii mai jos. Articolul este destinat \u00eencep\u0103torilor.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>Not\u0103<\/i>: articolul este destinat \u00eencep\u0103torilor, dar care au m\u0103car no\u021biuni de baz\u0103 despre ce este un IP, cum s\u0103 acceseze Raspberry Pi prin SSH folosind putty sau orice alt terminal \u0219i cum s\u0103 editeze fi\u0219iere cu editorul nano. Ca experiment, de data aceasta nu voi \u201e\u00eenc\u0103rca\u201d cititorii cu cod Python, nu va exista programare de loc. Pentru tot ce urmeaz\u0103, va fi suficient doar linia de comand\u0103. C\u00e2t de cerut este acest format, voi urm\u0103ri prin evalu\u0103rile textului.<\/p>\n<p>Desigur, nu voi aborda chestiuni complet evidente, cum ar fi un server FTP sau un share de re\u021bea. Mai jos am \u00eencercat s\u0103 amintesc c\u00e2teva lucruri mai utile \u0219i originale.<\/p>\n<p>\u00cenainte de a \u00eencepe s\u0103 instal\u0103m ceva, un  important <b>sfat<\/b>: un alimentator corespunz\u0103tor (mai bine s\u0103 fie unul original de 2.5A, nu un \u00eenc\u0103rc\u0103tor noname de telefon) \u0219i un radiator pentru procesor sunt extrem de importante pentru func\u021bionarea stabil\u0103 a Raspberry Pi. F\u0103r\u0103 acestea, Raspberry ar putea s\u0103 se blocheze, pot ap\u0103rea erori la copierea fi\u0219ierelor etc. Viclean\u0103 acestor erori este c\u0103 apar doar din c\u00e2nd \u00een c\u00e2nd, de exemplu, \u00een momentele de v\u00e2rf ale utiliz\u0103rii CPU sau \u00een timpul scrierii fi\u0219ierelor mari pe cardul SD.<\/p>\n<p>\u00cenainte de a instala orice componente, este recomandat s\u0103 actualiz\u0103m sistemul, altfel adresele vechi pentru comanda apt s-ar putea s\u0103 nu func\u021bioneze:<\/p>\n<pre><code class=\"bash\">sudo apt-get update<\/code><\/pre>\n<p>\nAcum putem \u00eencepe instalarea \u0219i configurarea.<\/p>\n<h2>1. Punct de acces WiFi<\/h2>\n<p>\nRaspberry Pi poate fi u\u0219or transformat \u00eentr-un punct de acces wireless, f\u0103r\u0103 a fi necesar s\u0103 cump\u0103r\u0103m ceva, WiFi-ul \u201e\u00eenc\u0103 este la bord\u201d. Pentru aceasta, trebuie s\u0103 instal\u0103m 2 componente: hostapd (Host access point daemon, serviciul punctului de acces) \u0219i dnsmasq (server DNS\/DHCP).<\/p>\n<p>Instal\u0103m dnsmasq \u0219i hostapd:<\/p>\n<pre><code class=\"bash\">sudo apt-get install dnsmasq hostapd<\/code><\/pre>\n<p>\nSet\u0103m o adres\u0103 IP static\u0103 pe care o va avea Raspberry Pi \u00een re\u021beaua WiFi. Pentru aceasta, trebuie s\u0103 edit\u0103m fi\u0219ierul dhcpcd.conf, introduc\u00e2nd comanda <i>sudo nano \/etc\/dhcpcd.conf<\/i>. \u00cen fi\u0219ier trebuie s\u0103 ad\u0103ug\u0103m urm\u0103toarele linii:<\/p>\n<pre><code class=\"bash\">interface wlan0\n  static ip_address=198.51.100.100\/24\n  nohook wpa_supplicant\n<\/code><\/pre>\n<p>\nA\u0219a cum se poate observa, \u00een re\u021beaua WiFi, Raspberry Pi-ul nostru va avea adresa 198.51.100.100 (acest lucru este important de notat, dac\u0103 pe el va func\u021biona un server, a c\u0103rui adres\u0103 trebuie introdus\u0103 \u00een browser).<\/p>\n<p>\u00cen continuare, trebuie s\u0103 activ\u0103m forwarding-ul IP, pentru care execut\u0103m comanda <i>sudo nano \/etc\/sysctl.conf<\/i> \u0219i de coment\u0103m linia <i>net.ipv4.ip_forward=1<\/i>.<\/p>\n<p>Acum trebuie s\u0103 configur\u0103m serverul DHCP \u2014 acesta va distribui adrese IP dispozitivelor conectate. Introducem comanda <i>sudo nano \/etc\/dnsmasq.conf<\/i> \u0219i ad\u0103ug\u0103m urm\u0103toarele linii:<\/p>\n<pre><code class=\"bash\">interface=wlan0\ndhcp-range=198.51.100.1,198.51.100.99,255.255.255.0,24h\n<\/code><\/pre>\n<p>\nA\u0219a cum se poate observa, dispozitivele conectate vor avea adrese IP \u00een intervalul 198.51.100.1\u2026 198.51.100.99.<\/p>\n<p>\u00cen cele din urm\u0103, a sosit momentul s\u0103 configur\u0103m Wi-Fi. Edit\u0103m fi\u0219ierul <i>\/etc\/default\/hostapd<\/i> \u0219i introducem acolo linia <i>DAEMON_CONF=\u00bb\/etc\/hostapd\/hostapd.conf\u00ab<\/i>. Acum s\u0103 edit\u0103m fi\u0219ierul hostapd.conf, introduc\u00e2nd comanda <i>sudo nano \/etc\/hostapd\/hostapd.conf<\/i>.<br \/>\nIntroducem parametrii punctului de acces:<\/p>\n<pre><code class=\"bash\">interface=wlan0\ndriver=nl80211\nssid=Raspberry Pi\nhw_mode=g\nchannel=7\nwmm_enabled=0\nmacaddr_acl=0\nauth_algs=1\nignore_broadcast_ssid=0\nwpa=2\nwpa_passphrase=12345678\nwpa_key_mgmt=WPA-PSK\nwpa_pairwise=TKIP\nrsn_pairwise=CCMP<\/code><\/pre>\n<p>\nAici este important de observat parametrii \u201essid\u201d (numele punctului de acces), \u201ewpa_passphrase\u201d (parola), \u201echannel\u201d (num\u0103rul canalului) \u0219i \u201ehw_mode\u201d (modul de func\u021bionare, a = IEEE 802.11a, 5 GHz, b = IEEE 802.11b, 2.4 GHz, g = IEEE 802.11g, 2.4 GHz). Din p\u0103cate, nu exist\u0103 o selec\u021bie automat\u0103 a canalului, a\u0219a c\u0103 cel mai pu\u021bin aglomerat canal WiFi trebuie ales manual.<\/p>\n<p><b>Este important<\/b>: \u00een acest exemplu de test, parola specificat\u0103 este 12345678, iar pentru un punct de acces real ar trebui folosit ceva mai complex. Exist\u0103 programe care efectueaz\u0103 atacuri prin for\u021b\u0103 brut\u0103 asupra parolelor, iar un punct de acces cu o parol\u0103 simpl\u0103 poate fi compromis. De asemenea, partajarea internetului cu str\u0103ini, \u00een conformitate cu legile actuale, poate avea consecin\u021be.<\/p>\n<p>Totul este preg\u0103tit, putem activa toate serviciile. <\/p>\n<pre><code class=\"bash\">sudo systemctl unmask hostapd\nsudo systemctl enable hostapd\nsudo systemctl start hostapd\nsudo systemctl reload dnsmasq<\/code><\/pre>\n<p>\nAcum ar trebui s\u0103 vedem un nou punct de acces WiFi \u00een lista re\u021belelor. Dar pentru a avea internet, trebuie s\u0103 activ\u0103m redirec\u021bionarea pachetelor din Ethernet \u00een WLAN, pentru care introducem comanda <i>sudo nano \/etc\/rc.local<\/i> \u0219i ad\u0103ug\u0103m linia de configurare iptables:<\/p>\n<pre><code class=\"bash\">sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE\n<\/code><\/pre>\n<p>\nAcum totul. Reboot\u0103m Raspberry Pi, \u0219i dac\u0103 totul a fost f\u0103cut corect, putem vedea punctul de acces \u0219i ne putem conecta la el.<\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/fe586866e572ea9950b5ad5f6fcfe9e7.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA\u0219a cum se poate observa, viteza nu este deloc rea, iar folosirea unui astfel de WiFi este suficient de bun\u0103.<\/p>\n<p>Apropo, un mic <b>sfat<\/b>: pentru a schimba numele re\u021belei Raspberry Pi, po\u021bi folosi comanda <i>sudo raspi-config<\/i>. \u00cen mod implicit, acesta este setat la (surpriz\u0103:) raspberrypi. Probabil este bine cunoscut. Cu toate acestea, nu toat\u0103 lumea \u0219tie c\u0103 acest nume este disponibil \u0219i \u00een re\u021beaua local\u0103, dar trebuie ad\u0103ugat \u201e.local\u201d. De exemplu, pentru a accesa Raspberry Pi prin SSH, se poate introduce comanda <i>putty pi@raspberrypi.local<\/i>. Aici, totu\u0219i, exist\u0103 o mic\u0103 nuan\u021b\u0103: aceasta func\u021bioneaz\u0103 \u00een Windows \u0219i Linux, dar nu func\u021bioneaz\u0103 \u00een Android \u2014 acolo va trebui s\u0103 introduce\u021bi manual adresa IP.<\/p>\n<h2>2. Server media<\/h2>\n<p>\nExist\u0103 1001 de metode de a crea un server media pe Raspberry Pi, dar voi discuta doar despre cea mai simpl\u0103. S\u0103 presupunem c\u0103 avem o colec\u021bie preferat\u0103 de fi\u0219iere MP3 \u0219i dorim ca aceasta s\u0103 fie disponibil\u0103 \u00een re\u021beaua local\u0103 pentru toate dispozitivele media. Vom instala pe Raspberry Pi serverul MiniDLNA, care poate face acest lucru pentru noi. <\/p>\n<p>Pentru a instala, introduce\u021bi comanda <i>sudo apt-get install minidlna<\/i>. Apoi, trebuie s\u0103 configur\u0103m fi\u0219ierul de configurare, introduc\u00e2nd comanda <i>sudo nano \/etc\/minidlna.conf<\/i>. Acolo trebuie s\u0103 ad\u0103ug\u0103m doar un singur r\u00e2nd, indic\u00e2nd calea c\u0103tre fi\u0219ierele noastre: <i>media_dir=\/home\/pi\/MP3<\/i> (calea poate fi, desigur, diferit\u0103). Dup\u0103 ce \u00eenchidem fi\u0219ierul, repornim serviciul:<\/p>\n<p><i>sudo systemctl restart minidlna<\/i><\/p>\n<p>Dac\u0103 am f\u0103cut totul corect, vom avea un server media complet func\u021bional \u00een re\u021beaua local\u0103, de la care putem reda muzic\u0103 printr-un radio WiFi desktop sau prin VLC-Player \u00een Android:<\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/07991c505022aa823c51bb7176540d90.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Sfaturi<\/b>: a desc\u0103rca fi\u0219iere pe Raspberry Pi este foarte convenabil folosind WinSCP \u2014 acest program permite lucrul cu dosarele RPi la fel de u\u0219or ca \u0219i cu cele locale.<\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/7ebb1fd564575179d774ebebb61aecac.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>3. Recep\u021bioner SDR<\/h2>\n<p>\nDac\u0103 avem un recep\u021bioner RTL-SDR sau SDRPlay, \u00eel putem folosi pe Raspberry Pi cu ajutorul programului GQRX sau CubicSDR. Acest lucru ne va permite s\u0103 avem un recep\u021bioner SDR autonom \u0219i silen\u021bios, capabil s\u0103 func\u021bioneze chiar \u0219i non-stop.<\/p>\n<p>\u00cemi cer scuze pentru calitatea capturii de ecran de pe televizor:<\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/8f466f8eb64a37c383861b5dd791c81c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nCu ajutorul RTL-SDR sau SDRPlay, este posibil s\u0103 primim diferite semnale radio cu frecven\u021be de p\u00e2n\u0103 la 1GHz (chiar \u0219i pu\u021bin mai mult). De exemplu, putem asculta nu doar radio FM obi\u0219nuit, ci \u0219i conversa\u021biile pilo\u021bilor sau altor servicii. Apropo, pasiona\u021bii de radio pot folosi Raspberry Pi pentru a recep\u021biona, decoda \u0219i trimite pe server semnalele <noindex><a rel=\"nofollow\" href=\"https:\/\/www.rtl-sdr.com\/tutorial-setting-up-a-low-cost-qrp-ft8-jt9-wspr-etc-monitoring-station-with-an-rtl-sdr-v3-and-raspberry-pi-3\/\">WSPR \u0219i alte moduri digitale<\/a><\/noindex>. <\/p>\n<p>O examinare detaliat\u0103 a radio-urilor SDR dep\u0103\u0219e\u0219te subiectul acestui articol, iar mai multe informa\u021bii pot fi g\u0103site <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450534\/\">aici<\/a><\/noindex>. <\/p>\n<h2>4. Server pentru \u201ecas\u0103 inteligent\u0103\u201d<\/h2>\n<p>\nCei care doresc s\u0103 fac\u0103 casa lor mai \u201einteligent\u0103\u201d pot folosi programul gratuit OpenHAB. <\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/78d1b38bb45f4705276cf010b63f6927.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAceasta nu este doar un program simplu, ci un \u00eentreg cadru care are diferite pluginuri \u0219i scripturi, permi\u021b\u00e2ndu-le s\u0103 gestioneze diverse dispozitive (Z-Wave, Philips Hue etc.). Cei interesa\u021bi pot explora mai multe pe site-ul oficial. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openhab.org\/\">https:\/\/www.openhab.org<\/a><\/noindex>.<\/p>\n<p>Apropo, av\u00e2nd \u00een vedere c\u0103 am men\u021bionat \u201ecasa inteligent\u0103\u201d, pe Raspberry Pi poate func\u021biona un server MQTT, care poate fi utilizat de diferite dispozitive locale.<\/p>\n<h2>5. Client pentru FlightRadar24<\/h2>\n<p>\nDac\u0103 e\u0219ti pasionat de avia\u021bie \u0219i locuie\u0219ti \u00eentr-o zon\u0103 unde acoperirea FlightRadar este slab\u0103, po\u021bi ajuta comunitatea \u0219i to\u021bi c\u0103l\u0103torii instal\u00e2nd un receptor acas\u0103. Tot ce ai nevoie este un receptor RTL-SDR \u0219i un Raspberry Pi. Ca bonus, vei ob\u021bine acces gratuit la un cont Pro FlightRadar24.<\/p>\n<p><img decoding=\"async\" alt=\"5 moduri utile de utilizare a Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/84d67383fd6b528315789d2ddfc3f413.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nInstruc\u021biuni detaliate <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/408003\/\">au fost deja publicate<\/a><\/noindex> pe Habr.<\/p>\n<h2>Concluzie<\/h2>\n<p>\nDesigur, aici nu sunt enumerate toate posibilit\u0103\u021bile. Raspberry Pi are o putere de calcul decent\u0103 \u0219i poate fi folosit pentru o varietate de sarcini, de la o consol\u0103 retro de jocuri sau supraveghere video, p\u00e2n\u0103 la recunoa\u0219terea numerelor de \u00eenmatriculare sau chiar ca serviciu pentru observa\u021bii astronomice. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.instructables.com\/id\/Wireless-All-Sky-Camera\/\">camere all-sky<\/a><\/noindex> pentru observa\u021bia meteorilor. <\/p>\n<p>De altfel, ceea ce am scris este valabil nu doar pentru Raspberry Pi, ci \u0219i pentru diverse \u201eclone\u201d (Asus Tinkerboard, Nano Pi etc.), toate programele vor func\u021biona probabil \u0219i acolo.<\/p>\n<p>Dac\u0103 publicul va fi interesat (ceea ce va fi determinat de evalu\u0103rile articolului), tema poate fi continuat\u0103. <\/p>\n<p>\u0218i, ca de obicei, tuturor experimente pl\u0103cute.<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/472778\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. Raspberry Pi \u043d\u0430\u0432\u0435\u0440\u043d\u043e\u0435 \u0435\u0441\u0442\u044c \u0434\u043e\u043c\u0430 \u043f\u043e\u0447\u0442\u0438 \u0443 \u043a\u0430\u0436\u0434\u043e\u0433\u043e, \u0438 \u0440\u0438\u0441\u043a\u043d\u0443 \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u043e\u0436\u0438\u0442\u044c, \u0447\u0442\u043e \u0443 \u043c\u043d\u043e\u0433\u0438\u0445 \u043e\u043d\u0430 \u0432\u0430\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u0435\u0437 \u0434\u0435\u043b\u0430. \u0410 \u0432\u0435\u0434\u044c Raspberry \u044d\u0442\u043e \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0446\u0435\u043d\u043d\u044b\u0439 \u043c\u0435\u0445, \u043d\u043e \u0438 \u0432\u043f\u043e\u043b\u043d\u0435 \u043c\u043e\u0449\u043d\u044b\u0439 fanless-\u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440 \u0441 Linux. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 Raspberry Pi, \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043a\u043e\u0434 \u043f\u0438\u0441\u0430\u0442\u044c \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0441\u043e\u0432\u0441\u0435\u043c. \u0414\u043b\u044f \u0442\u0435\u0445 \u043a\u043e\u043c\u0443 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":39480,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-39479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. 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Dar Raspberry nu este doar un mecanism valoros, ci \u0219i un computer fanless destul de puternic cu Linux.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/5-sposobov-poleznogo-ispolzovaniya-raspberry-pi","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd475 \u0441\u043f\u043e\u0441\u043e\u0431\u043e\u0432 \u043f\u043e\u043b\u0435\u0437\u043d\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f Raspberry Pi | ProHoster","og:description":"\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. 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