What does ls mean in 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.
Explain the term filter.
What is directory unix?
What is unix in simple terms?
How do I delete files older than 2 days unix?
What are the main features of unix operating system?
What is umask in unix?
Is used to create ordinary files on any unix system?
Is unix written in c?
What are system variables in unix?
Define a single-user system.
What are drawbacks of ssh v2?