Setup mosh 1.2.5 on Centos 6.x

setup_mosh_centos.sh

#!/bin/sh

# Update latest epel
sudo yum -y instlal epel-release

# perl-IO-Socket-IP isn't in the repos
wget http://rpm.mag-sol.com/Centos/6/x86_64/perl-IO-Socket-IP-0.31-1.el6.noarch.rpm
sudo rpm -Uvh perl-IO-Socket-IP-0.31-1.el6.noarch.rpm
rm perl-IO-Socket-IP-0.31-1.el6.noarch.rpm

# Download and build mosh
sudo yum -y install rpm-build rpmdevtools protobuf-compiler protobuf-devel libutempter-devel zlib-devel ncurses-devel openssh-clients perl-IO-Tty openssl-devel gcc gcc-c++ 
rpmdev-setuptree
cd ~/rpmbuild/SOURCES
wget http://mosh.mit.edu/mosh-1.2.5.tar.gz
cd ~/rpmbuild/SPECS
rm mosh.spec*
wget https://raw.github.com/keithw/mosh/master/fedora/mosh.spec
rpmbuild -bb mosh.spec
ARCH=`uname -m`
sudo rpm -Uvh ~/rpmbuild/RPMS/${ARCH}/mosh-1.2.5-1.el6.${ARCH}.rpm

# Set iptables rule
sudo iptables -A INPUT -p udp -m multiport --dports 60000:61000 -j ACCEPT

thanks , it did work!

fix Line 4 : yum install