Install tmux on RHEL

Hi *,

By default tmux is not available on RHEL (Red Hat Enterprise Linux) and also not on the cdrom.
This post will show you can get tmux without the need of a Red Hat subscription.
Thats usefull when testing stuff with a lot of VMs for example.

1.) Locate a RHEL CD or if you are using a VMware vCloud like I do then just insert dvd from catalog.

2.) Mount the CDROM. Easiest way to do this:

sudo mkdir /mnt/cdrom/
sudo mount /dev/sr0 /mnt/cdrom

3.) Install the required dependencies for tmux:

sudo yum install gcc kernel-devel make ncurses-devel libevent

4.) Get the latest libevent release gzip (.gz) from https://github.com/libevent/libevent/releases/

tar -xvf libevent-X.X.X-stable.tar.gz

cd libevent-X.X.X-stable/
./configure --prefix=/usr/local

make
sudo make install

5.) Get the latest tmux release gzip (.gz) from https://github.com/tmux/tmux/releases/ and download it via wget in a folder of your choice.

6.) When thats done we need to unpack it and move to the folder:

tar -xvf tmux-X.X.tar.gz
cd tmux-X.X

7.) Set the correct linker flags for our installation and install tmux:

sudo LDFLAGS="-L/usr/local/lib -Wl,-rpath=/usr/local/lib" ./configure --prefix=/usr/local
make
sudo make install

After the installation restart your terminal to flush the tmux executable. Then you can check your tmux version with
tmux -V

To find out where your executable is try:
which tmux

Regards,

A/