https://ftp.gnu.org/gnu/bash/bash-5.1.tar.gz https://ftp.gnu.org/gnu/bash/bash-5.1-patches/bash51-001 https://ftp.gnu.org/gnu/bash/bash-5.1-patches/bash51-002 https://ftp.gnu.org/gnu/bash/bash-5.1-patches/bash51-003 https://ftp.gnu.org/gnu/bash/bash-5.1-patches/bash51-004