To run an Avail light client, simply run the following command:

curl -sL1 avail.sh | bash

or, with wget:

wget --https-only --secure-protocol=TLSv1_2 --quiet -O - avail.sh | bash

You can pass additional flags to the script like:

curl -sL1 avail.sh | bash -s -- --network goldberg

Currently available flags are:

• network: can be one of the following: [goldberg, local]
• config: path to the configuration file, availup will generate a config if this flag is not specified
  • This flag is always required when running a local testnet
• identity: path to the identity file, availup will generate a config if this flag is not specified
  • It is important to keep your identity file safe!
• app_id: application ID to run the light client (defaults to 0)
  • It is recommended to not change this flag unless you require the app-specific mode.
• upgrade: takes y and yes as valid arguments, indicating that the avail-light binary should be upgraded
  • Using this flag wipes your existing data and config, use with caution! This flag does not guarantee that the binary will be upgraded.
• force_wsl: takes y and yes as valid arguments, the script exits on WSL systems by default. This flag can removed in the future.

You can use a custom config by passing it to availup as a flag:

# create the config:
touch ~/config.yml
# edit the config:
nano ~/config.yml
# and rerunning the script:
curl -sL1 avail.sh | bash -s -- --config ~/config.yml

⚠️ It is not recommended to modify the default config stored in ~/.avail/config/config.yml as that gets wiped on each run.

If you have a seed phrase that you'd like to use instead of the generated one, you can modify ~/.avail/identity/identity.toml, alternatively, you can pass it as a flag:

# edit default identity
nano ~/.avail/identity/identity.toml
# the script picks up the new identity automatically:
curl -sL1 avail.sh | bash
# create a new identity
touch ~/identity.toml
nano ~/identity.toml
# the script uses the identity at the path
curl -sL1 avail.sh | bash -s -- --identity ~/identity.toml

ℹ️ The script persists your identity file between runs. Deleting the file will cause a new one to be generated on the next run.

Alternatively, you can pass a specific application ID with availup:

rm ~/.avail/goldberg/config.yml
# and rerunning the script with flags:
curl -sL1 avail.sh | bash -s -- --app_id 1

ℹ️ Adding an app ID disables the LC mode and runs your client in an app-specific mode, this might not be your intention.

To upgrade the light client to the latest supported version, you can simply pass the --upgrade flag like:

curl -sL1 avail.sh | bash -s -- --upgrade y

ℹ️ Upgrading the LC only works if the binary was installed with the latest availup script or cargo.

To run the light client on WSL systems, use the --force_wsl flag like:

curl -sL1 avail.sh | bash -s -- --force_wsl y

ℹ️ Running this flag on any other system does nothing.