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@ -287,6 +287,12 @@ hostname –d #查看主机域名
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runlevel #查看系统运行级别
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runlevel #查看系统运行级别
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```
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```
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#### telnet 命令
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```
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telnet ip 端口 #测试指定 ip 的端口是否开放
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```
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#### jobs 命令
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#### jobs 命令
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```
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```
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