diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6593456
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,28 @@
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+go.work.sum
+./task.txt
+task.txt
+# env file
+.env
+./.idea
+.idea
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
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+share and change all versions of a program--to make sure it remains free
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+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
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+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
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+ For example, if you distribute copies of such a program, whether
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+ Developers that use the GNU GPL protect your rights with two steps:
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
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+work thus licensed is called the contributor's "contributor version".
+
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+available, or (2) arrange to deprive yourself of the benefit of the
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+consistent with the requirements of this License, to extend the patent
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+in a country, would infringe one or more identifiable patents in that
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+you grant is automatically extended to all recipients of the covered
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+ A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
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+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
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+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
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+ 14. Revised Versions of this License.
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+ The Free Software Foundation may publish revised and/or new versions of
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+
+ If the Program specifies that a proxy can decide which future
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+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
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+# Лабораторная работа #12 - Cетевые утилиты Linux.
+
+Вам предстоит изучить утилиты для захвата сетевого трафика, научиться анализировать захваченные пакеты, извлекать из них полезную информацию.
+
+## Материалы
+- [Лабораторная_работа_№_12_Сетевые_утилиты.docx](./Лабораторная_работа_№_12_Сетевые_утилиты.docx)
+
+## Работа
+
+Нам потребуется 2 ВМ. Я буду использовать одну [Ubuntu Desktop](https://ubuntu.com/download/desktop#downloads) а вторую [Ubuntu Server](https://ubuntu.com/download/server#downloads)
+
+Также нам потребуется настроить [**Сеть NAT**](https://github.com/xarll/vpr/blob/main/items/os1/lab6_2/README.md#%D0%BD%D0%B0%D1%81%D1%82%D1%80%D0%BE%D0%B8%D0%BC-%D1%81%D0%B5%D1%82%D1%8C-nat) или любую другую сеть между машинами
+
+
+#### 1. Утилита TCPDump
+
+Утилита TCPDump представляет собой мощный и популярный инструмент для перехвата и анализа сетевых пакетов. Она позволяет просматривать все входящие и исходящие из определенного интерфейса пакеты и работает в командной строке. Её использование необходимо в случаях, когда невозможно запустить Wireshark, например, в операционных системах без графической оболочки. Данная утилита часто используется для устранения неполадок в сети, а также для обеспечения безопасности.
+
+
+Если tcpdump запустить без параметров, он будет выводить информацию обо всех сетевых пакетах. С помощью параметра -i можно указать сетевой интерфейс, с которого следует принимать данные, например:
+
+```bash
+sudo tcpdump -i enp0s8
+```
+
+Чтобы посмотреть названия всех доступных для захвата интерфейсов, нужно запустить `TCPDump` с ключом `-D`.
+Для более точной настройки работы `TCPDump` можно использовать один из перечисленных далее параметров, или их комбинацию.
+— выводить сокращённую информацию: `-q`;
+— выводить подробную информацию: `-v` `-vv` `-vvv` (чем больше v, тем подробнее информация);
+— не преобразовывать порты: `-n` (вместо названий, например, http или ftp будут показываться номера, для указанных протоколов: 80 и 21);
+— не преобразовывать имена: `-nn` (вместо имён компьютеров, например, UbuntuServer1804 будут показываться их IP-адреса);
+— показывать MAC-адреса: `-e`;
+— захватить только определённое количество пакетов: `-с количество`;
+
+Для протокола, чьи пакеты должны захватываться, достаточно указать его название, например:
+```bash
+tcpdump icmp
+```
+или
+```bash
+tcpdump udp port 53
+```
+Параметр port позволяет ограничить для захватываемого трафика порт или их диапазон. Данный параметр применим только к протоколам `TCP` и `UDP`.
+По умолчанию `TCPDump` выводит информацию о захваченных пакетах на экран, однако её можно записывать в файл. Для это используется параметр `-w`:
+```bash
+tcpdump -w /home/student/1.cap
+```
+Полученный в результате файл имеет формат, совместимый с `Wireshark` и может быть в дальнейшем проанализирован в данной программе с использованием более наглядного графического интерфейса, а также широких возможностей по созданию фильтров и подсчёту статистики.
+
+#### 1.1. С помощью утилиты TCPDump захватите и выведите на экран информацию из входящих пакетов протоколов HTTP и ICMP.
+
+```bash
+tcpdump "icmp or (port 80 or port 443)"
+```
+
+
+
+Со 2й ВМ выполните `ping -c 3` и `curl `
+Также чтобы захватить `http`, можете открыть в web браузере любой вебсайт
+
+
+
+
+#### 1.2. С помощью утилиты TCPDump захватите и запишите в файл трафик, передаваемый виртуальной машиной с Ubuntu Server в процессе обращения к ней по протоколу HTTP и выполнения команды ping.
+
+Действия как и в П.1.1, но добавляется параметр для сохранения результата `... -w /home/jkearnsl/supadump.cap`
+
+```bash
+tcpdump "icmp or (port 80 or port 443)" -w /home/jkearnsl/supadump.cap
+```
+
+#### 2. Wireshark
+
+Wireshark — программа-анализатор трафика для компьютерных сетей Ethernet и некоторых других. Имеет графический пользовательский интерфейс.
+Позволяет анализировать шифрованный/незашифрованный трафик, дешифровать шифрованный график (при наличии сертификата)
+
+
+
+
+##### Установка
+
+```bash
+sudo apt-get install wireshark
+```
+
+```bash
+sudo dpkg-reconfigure wireshark-common
+```
+
+```bash
+sudo adduser $USER wireshark
+```
+
+##### Запуск
+
+```bash
+wireshark
+```
+
+#### 2.1. Передайте полученный трафик на виртуальную машину с десктопной версией Linux и установленной программой Wireshark.
+
+Нажмите: `Файл` --> `Открыть`
+
+
+
+--> `<выберите файл, который мы сохранили в П.1.2>` --> `Открыть`
+
+
+
+
+#### 2.2. С использованием Wireshark выделите из общего трафика отдельно HTTP и отдельно ICMP-пакеты.
+
+В wireshark есть фильтр, вбиваем туда `icmp or http` чтобы отобразить только `icmp` и `http` протоколы.
+
+
+
+#### 2.3. Определите все протоколы а также, все MAC-адреса, чьи пакеты присутствуют в захваченном трафике.
+
+Нажмите: `Статистика` --> `Иерархия Протоколов`
+
+
+
+Нажмите: `Статистика` --> `Диалоги`
+
+
+
+
+#### 2.4. Определите все IP-адреса, которые присутствуют в захваченном трафике.
+
+Нажмите: `Статистика` --> `IPv4 Statistics` --> `All Addresses`
+
+
+
+Тут продемонстрированы все уникальные ipv4 которые участвовали в трафике
+
+
+
+
+#### 2.5. Определите все запрашиваемые доменные имена.
+
+Нажмите: `Статистика` --> `HTTP` --> `Запросы`
+
+
+
+
+PS: возможно есть лучший метод, чем предлагаю я
+
+#### 3. NMap
+
+nmap — свободная утилита, предназначенная для разнообразного настраиваемого сканирования IP-сетей с любым количеством объектов, определения состояния объектов сканируемой сети.
+Ключевой информацией является «таблица важных портов».
+
+Эта таблица содержит номер порта, протокол, имя службы и состояние. Состояние может иметь значение `open` (открыт), `filtered` (фильтруется), `closed` (закрыт) или `unfiltered` (не фильтруется). Открыт означает, что приложение на целевой машине готово для установки соединения/принятия пакетов на этот порт. Фильтруется означает, что брандмауэр, сетевой фильтр, или какая-то другая помеха в сети блокирует порт, и Nmap не может установить открыт этот порт или закрыт. Закрытые порты не связаны ни с каким приложением, но могут быть открыты в любой момент. Порты расцениваются как не фильтрованные, когда они отвечают на запросы Nmap, но Nmap не может определить открыты они или закрыты. Nmap выдает комбинации открыт|фильтруется и закрыт|фильтруется, когда не может определить, какое из этих двух состояний описывает порт. Эта таблица также может предоставлять детали о версии программного обеспечения, если это было указано при запуске сканирования.
+
+Использование NMap заключается в выполнении команды:
+```bash
+nmap [<Тип сканирования>] [<Опции>] {<цель сканирования>}
+```
+Тип сканирования определяет используемые пакеты и подход к интерпретации результата. Для протокола TCP можно задать один или несколько из следующих типов сканирования:
+- `-sS` — TCP SYN;
+- `-sT` — TCP connect;
+- `-sN`; `-sF`; `-sX` — NULL, FIN и Xmas;
+- `-sA` — TCP ACK;
+- `-sW` — TCP Window;
+- `-sM` — TCP сканирование Мэймона.
+
+Подробнее про их различие можно прочитать в официальной русскоязычной [документации](https://nmap.org/man/ru/man-port-scanning-techniques.html). Чем больше типов сканирования выбрано при запуске команды, тем дольше оно будет осуществляться.
+Для сканирования UDP-портов необходимо использовать параметр `-sU`.
+По умолчанию NMap проверяет только первую тысячу портов (от 1 до 1000). При необходимости изменить данный диапазон можно использовать параметр `-p`, например:
+```bash
+nmap -sU -p 520 172.16.0.1-254
+```
+В представленной команде указывается сканировать только UDP-порт `520` на всех узлах с адресами от `172.16.0.1` до `172.16.0.254`.
+Возможен и противоположный вариант, например, сканировать все TCP-порты от 1 до 65535 на одном узле с адресом `10.0.0.1`:
+```bash
+nmap -sS -p 1-65535 10.0.0.1
+```
+Последний параметр называется целью сканирования и определяет множество адресов, для которых должно выполняться сканирование. В нём допустимо указывать:
+— единичный IP адрес: `nmap 192.168.1.1`
+— доменное имя узла: `nmap donstu.local`
+— множество IP-адресов: `nmap 192.168.1.1 192.168.1.2 192.168.1.3`
+— диапазон IP-адресов: `192.168.1.1-254`
+— подсеть: `192.168.1.0/24`
+
+NMap имеет множество дополнительных опций, обеспечивающих широкие возможности сбора информации о сети. Среди них:
+- `-sV` — детальное исследование портов для определения версий служб;
+- `-O` — определять операционную систему.
+Для упрощения использования `NMap` для неё существует официальный графический интерфейс — `ZenMap`.
+
+#### 3.1 Просканируйте какую-либо сеть (реальную или виртуальную) с целью определить операционные системы оборудования, входящего в неё, наличие других сетевых сервисов, используемые служебные сетевые протоколы (например DHCP или протоколы маршрутизации).
+
+```bash
+nmap -A -p-
+```
+
+В моем случае:
+
+```bash
+nmap -A -p- 10.0.2.1-255
+```
+
+
+
+
+Это занимает какое-то время (у меня несколько минут)
+
+
+## Контрольные вопросы
+
+> 1. Что такое `TCPDump`?
+
+Утилита, представляющая собой инструмент для перехвата и анализа сетевых пакетов
+
+> 2. Приведите примеры нескольких фильтров для `TCPDump`.
+- `icmp`
+- `tcp or icmp`
+- `port 20`
+
+> 3. Как проанализировать трафик, захваченный с помощью TCPDump в Wireshark?
+
+Сохранить трафик с помощью параметра `-w ` и открыть в wireshark
+
+> 4. Какая статистика может быть получена в Wireshark для сетевого трафика?
+
+Всяка-разная: от списка ip/mac/domain, до структурированного содержания данных пакета
+
+> 5. Что такое NMap и ZenMap?
+
+`NMap` - CLI утилита для сканирования сетей/узлов. `ZenMap` - её графический аналог
+
+> 6. Что является результатом работы NMap/ZenMap?
+
+Результатом работы является список просканированных целей с дополнительной информацией по каждой из них в зависимости от заданных опций. Ключевой информацией является «таблица важных портов».
+
+> 7. Что означает «открытый», «закрытый» и «фильтруемый» порт?
+- open (открыт) - Означает, что приложение на целевой машине готово для установки соединения/принятия пакетов на этот порт
+- closed (закрыт) - Закрытые порты не связаны ни с каким приложением, но могут быть открыты в любой момент
+- filtered (фильтруется) - Фильтруется означает, что брандмауэр, сетевой фильтр, или какая-то другая помеха в сети блокирует порт, и Nmap не может установить открыт этот порт или закрыт.
+- unfiltered - Когда nmap получает их, но не может определить
+
+*Авторство: **Бояршинов Н.О***
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@@ -0,0 +1,3 @@
+[Перенаправление ввода/вывода в Linux](https://selectel.ru/blog/tutorials/linux-redirection/)
+
+[Устройство подсистемы TTY](https://wandrien.github.io/articles/tty/)
diff --git a/episode_5/manual/if.pdf b/episode_5/manual/if.pdf
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+++ b/episode_7/code/bash.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+function outer() {
+ local count=0
+ inner() {
+ count=$(($count + 1))
+ echo $count
+ }
+ }
+
+outer
+inner
+inner
+inner
+#fn=`outer`
+##echo $fn
+#count=`$fn`
+#echo $count
+
+#res=outer
+#cout=`res`
+
+
+#decorator() {
+# echo "Code block befor call function"
+# res=$($1 20 100)
+# echo "Code block code call function"
+#}
+##
+#decorator summ
+#echo $res
+
+
+
+
+
+#p_internakCall() {
+# echo $0
+# echo $(($1 + $2 ))
+#
+# g_int=200
+# local l_foo='error'
+# echo 'Вызов HTTP сервера GET'
+#}
+#
+#p_internakCall 123 17
+#echo $l_foo
\ No newline at end of file
diff --git a/episode_7/code/task.sh b/episode_7/code/task.sh
new file mode 100755
index 0000000..399fbc7
--- /dev/null
+++ b/episode_7/code/task.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+#set -x
+#echo "Hello, World!"
+
+files=(*)
+for file in "${files[@]}"; do
+ echo "$file"
+done
+
+#var1='A'
+#var2='B'
+my_function () {
+ echo "First argument is $1"
+ echo "Second argument is $2"
+ local var1='C'
+ var2='D'
+ echo "Inside function: var1: $var1, var2: $var2"
+ echo 'aaaaa'
+ g_result_git=( 2 3 4 5 )
+}
+
+befor_call(){
+ echo "befor_call"
+}
+
+after_call(){
+ echo "after_call"
+}
+
+decarator(){
+ befor_call
+ echo `$1`
+ res=`$1`
+ after_call
+}
+
+
+closure(){
+ local count=1
+ increment() {
+ count=$((count + 1))
+ }
+ echo 'increment'
+}
+
+res=$(closure)
+echo `$res`
+
+#decarator 'my_function'
+#echo ${g_result_git[@]}
+
+
+
+
+
+
+#echo "Before executing function: var1: $var1, var2: $var2"
+#echo "After executing function: var1: $var1, var2: $var2"
+#fn="my_function"
diff --git a/episode_7/manual/git.pdf b/episode_7/manual/git.pdf
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diff --git a/episode_9/10.proc.pdf b/episode_9/10.proc.pdf
new file mode 100644
index 0000000..0d9c6e0
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diff --git a/episode_9/Linux_lesson.pdf b/episode_9/Linux_lesson.pdf
new file mode 100644
index 0000000..c05077c
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diff --git a/episode_9/link.py b/episode_9/link.py
new file mode 100644
index 0000000..2fa595b
--- /dev/null
+++ b/episode_9/link.py
@@ -0,0 +1 @@
+https://practicaldev-herokuapp-com.global.ssl.fastly.net/satorutakeuchi/how-linux-works-chapter1-linux-overview-part1-3g61
\ No newline at end of file