Manage processes and set up scheduled tasks

Case study: Managing processes and setting up scheduled tasks

Requirements: Managing processes in the system

Set up system administration tasks for scheduled runs

Steps:

1 process in the management system

Start the Portmap service in the system, confirm the service running status, and view the process information of portmap through the PS or PGREP command

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Ps: View static process Statistics, a: Displays all process information under the current terminal, U: output process information in a user-oriented format, x: Displays process information for the current user under all terminals,-e: Displays all process information in the system,-L: Displays process information in long format,-F: Displaying process information in full format

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Ps–elf: Displays all process information in the system in a long format

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Ps aux: All process information will be displayed as a simple list

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Execute the "cpuburn-in 10" command from another terminal, perform a 10-minute high load test, look for a higher CPU utilization PID number, and terminate its operation

Mount will/dev/cdrom in the/media/directory of the Mount Road

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CD switch/media/directory, ls list displays directory contents

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Unzip the Cpuburn-in CPU test tool and release it to the/opt/directory

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The pgrep command can specify a part of the process name for querying, and the-l option queries the process running at a specific terminal

-u: Option to query a specific user's process,-t: Option to query a process running at a specific terminal

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Pstree: View the Process tree (-the name of the process is displayed by default)-A option to list the complete command information-u: can list the corresponding user name,-p: can be used to list the corresponding ID number

PSTREE–AUP: command to view the process tree of the current system

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Using the KILL command to terminate a process requires a PID process number as a parameter

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2 Set up system administration tasks for scheduled runs

Confirm Start Crond system service

Perform "Crontab–e" to set up scheduled tasks based on requirements

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Perform "crontab-l" to see a list of scheduled tasks for all settings

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Manage processes and set up scheduled tasks