Build ZClassic (ZCL) wallet on Ubuntu:

Build everything:

sudo apt-get install build-essential pkg-config libc6-dev m4 g++-multilib autoconf libtool ncurses-dev unzip git python zlib1g-dev wget bsdmainutils automake

The actual build takes a long time:

mkdir ~/source
cd ~/source
git clone https://github.com/z-classic/zclassic.git
cd ~/source/zclassic/zcutil
./build.sh
./fetch-params.sh

Run wallet and then stop it:

cd ~/source/zclassic/src
./zcashd -daemon
./zcash-cli stop

You will now see a folder ~/.zclassic
Create zclassic.conf in this folder that looks like this:

rpcuser=YourUserName
rpcpassword=YourPassword
rpcport=8234
gen=1

Now start the server again:

cd ~/source/zclassic/src
./zcashd -daemon

Use the cli (command line interface) to getinfo:

./zcash-cli getinfo

ZCL update (when you need to upgrade)

cd ~/source/zclassic
git pull
cd ~/source/zclassic/zcutil
./build.sh
./fetch-params.sh