Update cheatsheets

tldr/linux/installpkg

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# installpkg
+
+> Install a Slackware package.
+> More information: <http://www.slackware.com/config/packages.php>.
+
+- Install a package:
+
+`sudo installpkg {{path/to/package.tgz}}`
+
+- Generate a report of a simulated installation to `stdout`:
+
+`installpkg -warn {{path/to/package.tgz}}`
+
+- Create a package from current directory and its subdirectories:
+
+`installpkg -m {{package_name.tgz}}`
+
+- Install the contents of the current directory and subdirectories as a package with a specified name:
+
+`sudo installpkg -r {{package_name.tgz}}`