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sudo killall -9 tmux

# Remove any previous installation
sudo apt-get -y remove tmux
  
# Install needed dependences
sudo apt-get -y install wget tar libevent-dev libncurses-dev

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# Define the wanted version, for example 3.5
VERSION=3.5
    
# Download the wanted version
wget https://github.com/tmux/tmux/releases/download/${VERSION}/tmux-${VERSION}.tar.gz
    
# Unpack it and remove the compressed file

tar xf tmux-${VERSION}.tar.gz
rm -f tmux-${VERSION}.tar.gz

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# Assuming the same version from last session, access the created folder
# and run the configure script to check if you have everything needed to
# build the application, builds the source code with make and then moves
# all the needed files for the application to the appropriate system
# directories with the make install command

cd tmux-${VERSION}
./configure
make
sudo make install

# Now cleanup the mess and happy hack! =)
cd -
sudo rm -rf /usr/local/src/tmux-\*
sudo mv tmux-${VERSION} /usr/local/src