Answer Posted / u.meghana

kernel forms the core of unix O.S . This interacts with the hardware.It is loaded into memory when a system is booted. It's functions are
1.Managing the system resources.
2.Allocating time for diff users and processes.
3.Deciidng process priorities and performing them

Who command in unix?

1135

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Why is it called a shebang?

1179

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What is ctrl d?

1094

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Explain how to use grep command to list find the records of a file containing 10 different strings?

1064

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Can you explain a little bit about command substitution?

1110

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Write a command that will find all text files in a directory such that it does not contain the word "amazing" in any form (that is, it must include the words amazing, amazing, or amazing)?

1565

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Explain ‘system calls’ with respect to unix commands?

1090

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Which command is used to delete all files in the current directory and all its sub-directories?

1254

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What is time_t?

1108

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How do I use grep to find a file?

1110

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When i run a programm of orphan process. Instead of getting child's parent (ppid)=1 ..i get 1400 and it varies as per system. How can i findthe right soluion??? My pgm: #include # include int main() { int pid; pid=fork(); if(pid < 0) {exit(-1);} else if(pid==0) { printf("Child Process is Sleeping ..."); sleep(10); printf("Orphan Child's Parent ID : %u ",getppid()); } else { printf("Parent Process Completed ... %u ",getpid()); exit(0); } return 0; } Output:

2265

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Differentiate cmp command from diff command.

1165

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Why is grep called grep?

1289

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How do I use nslookup?

1090

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Why is shebang used?

1121

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