Linux

1.yum, rpm

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2.파일 권한, chmod, chown

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3.tar, gz, tar.gz, tgz

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4.systemctl, ststemd, service

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5.Linux, Ubuntu, UNIX

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6.apt vs apt-get

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7.apt 명령어

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8..ssh

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9./etc/passwd, /etc/shadow

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10.root, sudo, su

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11.ssh, sshd

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12.ls -al

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