What is the architecture of unix operating system?

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How to remove the directory in unix?

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what is the functionality of kernel in unix architecture?

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Is unix portable?

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What is .sh file in unix?

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Does apple run unix?

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1)How to schedule a job,that will periodically execute in second by crontab? 2)I know only second specific time to execute the job. like 10 10 * * * sleep 40&&ps -l>/dev/pts/1 It will execute at 10:10:40 AM but do not know how to execute 15 second,30 second so on at 10:10 am.

3 Answers   Qwest,

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Differentiate between absolute and related path?

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What are the core concepts of unix

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What is the full form of unix?

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How do I run a shell script in unix?

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How to move a background job to forward?

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