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	在linux系统中,如何清除访问日志、登陆日志及曾使用过的命令呢? 
	用以下的shell脚本来实现: 
	复制代码代码示例: 
	#!/usr/bin/bash #edit www.jbxue.com echo > /var/log/syslog echo > /var/log/messages echo > /var/log/httpd/access_log echo > /var/log/httpd/error_log echo > /var/log/xferlog echo > /var/log/secure echo > /var/log/auth.log echo > /var/log/user.log echo > /var/log/wtmp echo > /var/log/lastlog echo > /var/log/btmp echo > /var/run/utmp history -c 
	代码说明: | 
