centos6-installtmux.sh

#!/bin/bash

curl -C - -L -O http://downloads.sourceforge.net/tmux/tmux-1.8.tar.gz
curl -C - -L -O https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz


tar zxvf tmux-1.8.tar.gz
tar zxvf libevent-2.0.21-stable.tar.gz

yum install gcc kernel-devel make ncurses-devel -y
 
# cd to libevent2 src
cd libevent-2.0.21-stable
./configure --prefix=/usr/local
make && make install
 
# cd to tmux src
cd ../tmux-1.8
LDFLAGS="-L/usr/local/lib -Wl,-rpath=/usr/local/lib" ./configure --prefix=/usr/local
make && make install

cd ~/
export PATH=$PATH:/usr/local/bin

rm -rf tmux-1.8 libevent-2.0.21-stable tmux-1.8.tar.gz libevent-2.0.21-stable.tar.gz

echo ""
echo "------------------"
echo "Installed tmux 1.8"
echo "------------------"
echo ""

modified to continue download where left off (or not at all if complete)