I'm using Ubuntu 20.04 here, but these steps work for Ubuntu 18.04 and any other Ubuntu version.

$dir - "$homedir/.electrum/wallets"

Guide: Ubuntu MATE 20.04 LTS is undoubtedly one of the most popular official Ubuntu features.

Ubuntu 16.04 LTS (Ubuntu 16.10 recommended)

This is the simplest of cases, with a simple conversion, the corresponding memory coin address and private key can be obtained from the prototype share address and private key, the code is below.

Click Next." "Your Electrum Bitcoin wallet is now available!"

and Android system. Installing Electrum requires you to write down a 12-word seed to help you recover your wallet on multiple devices. If you forget your private key, this seed can also make Electrum look more human. In addition, Electrum has a "cold storage" mode where you don't have to pay Bitcoin to view your balance.

Electrum Wallet is one of the most popular Bitcoin wallets and has been around for several years. However, Electrum wallet users often rely on Electrum servers, which presents some security and privacy trade-offs. If you use electrum personal servers, Electrum wallet users can connect locally to their own private servers, enjoying the convenience of Electrum without any trade-offs.

Electrum is a well-known light wallet for Bitcoin that adds new features such as server authentication using SSL to prevent MITM attacks. So unlike other Bitcoin light wallets, Electrum cannot communicate directly with different versions of Bitcoin full nodes, and each startup connects to electrumserver to communicate, and electrum.

Bitcoin desktop wallet client Electrum has released a 4.0 beta version, adding several important updates, including support for the Lightning network, nearly a year after the previous version of Electrum, 3.3.8 (last July). In the 4.0 beta version, Electrum mainly added features such as PSBT (partially signed Bitcoin transactions), Lightning Network, watchtowers (暸 watchtowers) and Submarineswaps (subliminal switching). (Github)