Merge branch 'master' of https://github.com/yafp/cheat into yafp-master

* 'master' of https://github.com/yafp/cheat:
  20151102 - Added 3 more cheats into the new apt cheatsheet
  20151102 - Adding a cheatsheet for at (apt vs apt-get)

cheat/cheatsheets/apt

@@ -0,0 +1,25 @@
+# Desc: Allows to update the operating system
+
+# To search a package:
+apt search package
+
+# To show package informations:
+apt show package
+
+# To fetch package list:
+apt update
+
+# To download and install updates without installing new package:
+apt upgrade
+
+# To download and install the updates AND install new necessary packages:
+apt dist-upgrade
+
+# Full command:
+apt update && apt dist-upgrade
+
+# To install a new package(s):
+apt install package(s)
+
+# To uninstall package(s)
+apt remove package(s)