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msg_blue() { printf "${blue}==>${bold} $1${all_off}\n" } note() { printf "${blue}==>${yellow} 注意:${bold} $1${all_off}\n" } all_off="$(tput sgr0)" bold="${all_off}$(tput bold)" blue="${bold}$(tput setaf 4)" yellow="${bold}$(tput setaf 3)" post_install() { note "" } post_upgrade() { post_install }