centos7更新bash

wget http://ftp.gnu.org/gnu/bash/bash-4.4.12.tar.gz
tar xzf bash-4.4.12.tar.gz
cd bash-4.4.12
./configure --prefix=/usr/local/$( basename $( pwd ) )
make
make install
ln -sf /usr/local/$( basename $( pwd ) )/bin/bash /bin/bash

# 重启
reboot