You only have to use the `--generate-from-device` flag once (i.e. upon wallet creation). Thereafter, you'd basically use it similar to how you normally use the CLI. That is:
- You need to install the Ledger Monero app and configure your system. Instructions can be found [here](https://github.com/LedgerHQ/blue-app-monero/blob/master/doc/user/bolos-app-monero.pdf) (sections 3.1.1 and 3.2.3 in particular). In addition, make sure to set the network to `Mainnet`
- You need to install the Ledger Monero app and configure your system. Instructions can be found [here](https://github.com/LedgerHQ/blue-app-monero/blob/master/doc/user/bolos-app-monero.pdf) (sections 3.1.1 and 3.2.2 in particular). In addition, make sure to set the network to `Mainnet`
- You need to install the Ledger Monero app and configure your system. Instructions can be found [here](https://github.com/LedgerHQ/blue-app-monero/blob/master/doc/user/bolos-app-monero.pdf) (sections 3.1.1 and 3.2.1 in particular). In addition, make sure to set the network to `Mainnet`
If the Ledger wallet files are not in the same directory as `monero-wallet-cli`, you ought to open `monero-wallet-cli` with the `--wallet-file /path/to/wallet.keys/file` flag. Alternatively, you can copy the Ledger wallet files to the same directory as `monero-wallet-cli`.