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# Scripts
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There are a number of useful scripts included with the distribution.
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Some of these scripts are only useful during build and development, but
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other scripts are intended for end users to be able to use. These scripts
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may be installed with n2n as part of your operating system package.
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All scripts can be found in the `scripts` directory.
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Short descriptions of these scripts are below.
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## End user scripts
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### `n2n-ctl`
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This python script provides an easy command line interface to the running
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n2n processes. It uses UDP communications to talk to the Management API.
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By specifying the right UDP port, it can talk to both the edge and the
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supernode daemons.
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Example:
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- `scripts/n2n-ctl --help`
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- `scripts/n2n-ctl help`
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### `n2n-httpd`
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This python script is a simple http gateway to the running edge. It provides
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a proxy for REST-like HTTP requests to talk to the Management API.
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By default it runs on port 8080.
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It also provides a simple HTML page showing some edge information, which when
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run with default settings can be seen at http://localhost:8080/ (Also
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a http://localhost:8080/supernode.html page for the supernode)
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Example:
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- `scripts/n2n-httpd --help`
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- `scripts/n2n-httpd 8087`
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## Build and Development scripts
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### `hack_fakeautoconf.sh`
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This shell script is used during development to help build on Windows
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systems. An example of how to use it is shown in
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the [Building document](Building.md)
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### `indent.sh`
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This shell script is a wrapper for the `uncrustify` C code style checker
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which checks or applies a set of rules to the code. It is used during
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the automated lint checks.
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### `test_harness.sh`
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This shell script is used to run automated tests during development.
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### `n2n-gateway.sh`
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A sample script to route all the host traffic towards a remote gateway,
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which is reachable via the n2n virtual interface.
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### `version.sh`
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This script is used to determine the current version number during the
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build process.
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It looks at both the VERSION file and the GIT tags and outputs the
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version number to use.
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## Monitoring and statistics
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### `munin/n2n_`
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This is a simple monitoring script that can be used with the munin-node
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system to monitor the n2n daemons.
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This is a fully autoconfigurable wildcard munin plugin, but to get a quick
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sample:
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get a list of suggested plugin names:
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```
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munin/n2n_ suggest
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```
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Enable some of those names:
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```
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ln -s /usr/share/munin/plugins/n2n_ /etc/munin/plugins/n2n_supernode_pkts
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ln -s /usr/share/munin/plugins/n2n_ /etc/munin/plugins/n2n_supernode_counts
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```
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Manually test fetching and config:
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```
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/etc/munin/plugins/n2n_supernode_pkts
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/etc/munin/plugins/n2n_supernode_pkts config
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```
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