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    ½«/etc/inputrcÖеÄset bell-style none ǰµÄ££È¥µô£¬Ö®ºóÖØÆôϵͳ¼´¿É¡£
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#vi /etc/inputrc
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# do not bell on tab-completion
set bell-style none
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#echo "set bell-style none" >> ~/.bashrc
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