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# Useful Scripts
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In this section we will add scripts that might come handy. For instance, a script to upgrade some of the
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software you can find in the VM.
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### Installing all the p4-tools that come with the VM
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If you just want to install all the software required to start developing
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P4 you can use the [install-p4-tools.sh](../vm/bin/install-p4-tools.sh) script.
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You can change the two following variables to enable/disable debugging or the
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required software for the P4runtime.
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```bash
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DEBUG_FLAGS=true
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ENABLE_P4_RUNTIME=true
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```
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### Updating BMV2
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We provide a very useful script that allows you to easily update `bmv2` to the latest version,
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to a different commit, enable/disable debugging, multiqueuing and more. If you built the `vm`
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using vagrant or use the provided VM this script will be already installed in `/bin/` and you
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directly used it.
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```bash
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update-bmv2 -h
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update-bmv2 [OPTION]... [FILE]...
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Update bmv2/PI script options.
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Options:
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--enable-multi-queue: Enables simple_switch multiple queues per port
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--update-code: Before building cleans and pulls code from master or <use-commit>
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--bmv2-commit: Specific commit we want to checkout before building the bmv2
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--pi-commit: Specific commit we want to checkout before building PI
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--enable-debugging: Compiles the switch with debugging options
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--enable-p4runtime: Compiles the simple_switch_grpc
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```
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You can find the script [here](../vm/bin/update-bmv2.sh).
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### Updating P4C
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We also provide a similar script to update `p4c`, the P4 code compiler.
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```bash
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update-p4c -h
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update-p4c [OPTION]... [FILE]...
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Update p4c script options.
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Options:
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--update-code Username for script
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--p4c-commit: Specific commit we want to checkout before building the bmv2
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--enable-debugging: Compiles the switch with debugging options
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--copy-p4include: Copies a custom p4include to the global path
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--only-copy-p4include: Does not compile p4c
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```
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You can find the script [here](../vm/bin/update-p4c.sh). |