Install tigger with rvm at your home

installtigger.sh

#!/bin/bash
export TIGGER_HOME=$HOME/.tigger/bin
echo "bajando y descomprimiendo tigger"
curl http://www.tiggerlovesdevs.com/tigger.tar.bz2 | tar -jxv
cd tigger
echo "reparando makefile"
sed "s@/usr/bin@$TIGGER_HOME@g" makefile > makefile.temp
cat makefile.temp > makefile
rm makefile.temp
echo "creando carpeta destino"
mkdir -p $TIGGER_HOME 
echo "compilando"
make
cd ..
echo borrando directorios
rm -rf tigger
echo agregar export $TIGGER_HOME a tu bashrc