Update puppet-commands.md

IaC/Puppet/puppet-commands.md

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-# Puppet Commands
+# Puppet Commands
+
+### FACTER
+
+| Command | Description |
+| ------- | ----------- |
+| `facter` | show all facters |
+| `facter osfamily` | show OS Family facter |
+| `facter -y` | show facters in YAML|
+| `facter -j` | show facters in JSON |
+| `facter -p | grep pe_` | get Puppet Enterprise version |
+| `facter -p | grep aio` | get Puppet agent All-in-one version |
+| `notify { "OS is ${::facts['operatingsystem']}": }` | use fact inside a manifest using 'facter' function |
+| `notify { "OS is $::operatingsystem": }` | use fact inside manifest directly |
+| `$::operatingsystemmajrelease` | get OS major release from manifest |
+
+### PUPPET AGENT
+
+| Command | Description |
+| ------- | ----------- |
+| `puppet agent --test (or -t)` |Apply catalog using -verbose, -ignorecache, -no-daemonize -detailed-exit-codes, -show_diff |
+| `puppet agent -t --debug` |Run in debug mode with more output |
+| `puppet agent -t --noop ` | Run simulation (no changes to system)|
+| `puppet agent -t --environment development` | Run catalog for different environment than whats configured in Puppet Agent's conf file |
+| `puppet agent --disable` | Disable puppet agent from running on node|
+| `puppet agent --enable` | Enable puppet agent to run on node |
+| `puppet resource package` | show all installed packages |
+| `puppet resource package apache ensure=present/absent` | install or remove package |
+| `puppet resource` | show all managed resources |
+| `puppet agent -t --graph` |show a graph of all dependencies found in a catalog, stored in a .dot image |
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