Move pages under tldr, lint run.sh, update docs

tldr/vagrant

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# vagrant
+
+> Manage lightweight, reproducible, and portable development environments.
+> More information: <https://www.vagrantup.com>.
+
+- Create Vagrantfile in current directory with the base Vagrant box:
+
+`vagrant init`
+
+- Create Vagrantfile with the Ubuntu 20.04 (Focal Fossa) box from HashiCorp Atlas:
+
+`vagrant init ubuntu/focal64`
+
+- Start and provision the vagrant environment:
+
+`vagrant up`
+
+- Suspend the machine:
+
+`vagrant suspend`
+
+- Halt the machine:
+
+`vagrant halt`
+
+- Connect to machine via SSH:
+
+`vagrant ssh`
+
+- Output the SSH configuration file of the running Vagrant machine:
+
+`vagrant ssh-config`
+
+- List all local boxes:
+
+`vagrant box list`