From 64ce6b98cc0ba98d5ab5d82776447256675b4f1e 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 18:56:22 +0100
Subject: [PATCH] eloadas alpha 1

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+% Linux előadás
+% TĂłth MiklĂłs
+% March 21, 2021
+
+# PĂĄr egyĂŠb hasznos parancs
+
+## `wc`
+
+- word counter
+- szavak, sorok szĂĄmolĂĄsa
+
+```shell-session
+[mike@thinkyboi ~]$ echo "egy kĂŠt hĂĄ" | wc -w
+3
+[mike@thinkyboi ~]$ echo "egy kĂŠt hĂĄ" | wc -l
+1
+[mike@thinkyboi ~]$ echo "egy
+kĂŠt
+hĂĄ" | wc -l
+3
+```
+
+## `tr`
+
+- karaktereket cserĂŠl ki vagy tĂśrĂśl
+
+```shell-session
+[mike@thinkyboi ~]$ echo "almafa" | tr "a" "e"
+elmefe
+[mike@thinkyboi ~]$ echo "almafa kĂśrtefa eperfa" | tr " " "\n"
+almafa
+kĂśrtefa
+eperfa
+[mike@thinkyboi ~]$ echo "almafa" | tr -d "a"
+lmf
+```
+
+## `curl`
+
+- http shellből
+- 
+
+# `>>` operĂĄtor
+
+- `>` tesĂłja
+- filehoz appendĂĄl
+```shell
+curl https://git.sch.bme.hu/mikewashere.keys >> .ssh/authorized_keys
+```
-- 
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