From 39565abee9037bbc0966b54939d3421cfb3ef5fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikl=C3=B3s=20T=C3=B3th?= <tothmiklostibor@gmail.com>
Date: Sun, 21 Mar 2021 19:13:16 +0100
Subject: [PATCH] eloadas beta 1

---
 eloadas.md | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/eloadas.md b/eloadas.md
index 318cd0f..4e477d0 100644
--- a/eloadas.md
+++ b/eloadas.md
@@ -65,3 +65,95 @@ curl https://git.sch.bme.hu/mikewashere.keys >> .ssh/authorized_keys
 
 - shell automatizĂĄlĂĄsa
 - mintha soronkĂŠnt kiadnĂĄnk a parancsokat
+
+```shell-session
+[mike@thinkyboi tmp]$ vi test.sh
+[mike@thinkyboi tmp]$ cat test.sh 
+echo "ez simĂĄn mĹąkĂśdik" | cowsay
+curl "https://home.sch.bme.hu/~mikewashere/linux/eloadas.md" | grep "soronkĂŠnt" | cowsay
+
+[mike@thinkyboi tmp]$ bash test.sh 
+ _____________________ 
+< ez simĂĄn mĹąkĂśdik >
+ --------------------- 
+        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100  1596  100  1596    0     0  69391      0 --:--:-- --:--:-- --:--:-- 69391
+ _________________________________ 
+/ - mintha soronkĂŠnt kiadnĂĄnk a \
+\ parancsokat                     /
+ --------------------------------- 
+        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||
+[mike@thinkyboi tmp]$ 
+```
+
+# shebang
+
+- file futtatĂĄsakor a kernel meglesi mi van az elejĂŠn
+- el tudunk indĂ­tani scripteket programkĂŠnt
+- `#!<program>`
+
+```shell-session
+[mike@thinkyboi tmp]$ vi test.sh 
+[mike@thinkyboi tmp]$ cat test.sh 
+#!/bin/bash
+echo "ez simĂĄn mĹąkĂśdik" | cowsay
+curl "https://home.sch.bme.hu/~mikewashere/linux/eloadas.md" | grep "soronkĂŠnt" | cowsay
+
+[mike@thinkyboi tmp]$ chmod +x test.sh 
+[mike@thinkyboi tmp]$ ./test.sh 
+ _____________________ 
+< ez simĂĄn mĹąkĂśdik >
+ --------------------- 
+        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100  1596  100  1596    0     0  11319      0 --:--:-- --:--:-- --:--:-- 11319
+ _________________________________ 
+/ - mintha soronkĂŠnt kiadnĂĄnk a \
+\ parancsokat                     /
+ --------------------------------- 
+        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||
+[mike@thinkyboi tmp]$ 
+```
+
+# tĹązfal
+
+- a kernel belsejĂŠben -> gyors, de low-level
+- iptables
+- kényelmesebb egy tűzfal-kezelő
+
+## UFW
+
+- uncomplicated firewall
+- egyszerĹą
+
+```shell-session
+[mike@thinkyboi tmp]$ sudo ufw allow 80
+Rules updated
+Rules updated (v6)
+[mike@thinkyboi tmp]$ sudo ufw allow https
+Rules updated
+Rules updated (v6)
+[mike@thinkyboi tmp]$ sudo ufw enable
+```
+
+# SSH kulcsok
+
-- 
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