[gentoo] дайте дефолтное $PS1

$ grep -rw PS1 /etc/
/etc/profile:	# Newer bash ebuilds include /etc/bash/bashrc which will setup PS1
/etc/profile:		PS1='\u@\h \w \$ '
/etc/profile:	PS1=«${USER:-$(whoami 2>/dev/null)}@$(uname -n 2>/dev/null) \$ »
/etc/bash/bashrc:# Set colorful PS1 only on colorful terminals.
/etc/bash/bashrc:		PS1='\[\033[01;31m\]\h\[\033[01;34m\] \W \$\[\033[00m\] '
/etc/bash/bashrc:		PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '
/etc/bash/bashrc:		PS1='\u@\h \W \$ '
/etc/bash/bashrc:		PS1='\u@\h \w \$ '