How can you count the number of characters and lines in a file?
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What is alias mechanism? Explain.
Why does the server parent need to close the connected socket returns from accept in a concurrent TCP server? What may happen if it does not do so?
What are the three main components of unix architecture?
What are the types of unix operating system?
Explain different types of Unix systems.
Explain about shell aritmetic operators and functions?
Is unix written in c?
What is .sh file in unix?
1)what is grep|sort give example? 2)what are the test commands
How to move a background job to forward?
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.
Why do we need unix shell scripting?