2015-09-19

Morning observation and management process

A process is a set of instructions loaded into memory

-Process ID Number (PID) uniquely identifies a process

-uid,gid and SELinux contexts determine access to file systems

~ Usually inherits permissions from the executing user

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Find process

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Signal

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Send a signal to a process

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Scheduling priority

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Interactive Process management Tools

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Job Control

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Afternoon

OpenSSH overview

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OpenSSH Server

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Service Side write: SSH

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OpenSSH Server Configuration

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OpenSSH Client Configuration

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OpenSSH Client

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Key-based OpenSSH

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SYSTEMD Introduction

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Hack the root password of CentOS7

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Systemctl

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Package Management

RPM Package Manager

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RPM Installation and removal

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RPM Package Query

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2015-09-19