Install tmux 2.8 on centos 7

install-tmux.sh

# Install tmux 2.8 on Centos

# install deps
yum install gcc kernel-devel make ncurses-devel

# cd src
cd /usr/local/src

# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL
curl -LO https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
tar -xf libevent-2.1.8-stable.tar.gz
cd libevent-2.1.8-stable
./configure --prefix=/usr/local
make
make install

# DOWNLOAD SOURCES FOR TMUX AND MAKE AND INSTALL

curl -LO https://github.com/tmux/tmux/releases/download/2.8/tmux-2.8.tar.gz
tar -xf tmux-2.8.tar.gz
cd tmux-2.8
LDFLAGS="-L/usr/local/lib -Wl,-rpath=/usr/local/lib" ./configure --prefix=/usr/local
make
make install

# pkill tmux
# close your terminal window (flushes cached tmux executable)
# open new shell and check tmux version
tmux -V

the easiest way probably directly downloaded the tmux 3,3 package from http://galaxy4.net/repo/RHEL/7/x86_64/tmux-3.3-1.el7.x86_64.rpm use wget. and then use rpm -ivh tmux to install it. no yum involved

yum install tmux

Thank you!

Install latest tmux(3.x) on centos 7:

yum install http://galaxy4.net/repo/galaxy4-release-7-current.noarch.rpm
yum install tmux

tmux -V
tmux 3.3

problem solved! thx