Answer Posted / manish

1. Regular file:(-):contains data in either text format or
binary format
2. Directory file:(d):contains entries of files
3. FIFO file:(f):2 communicate betn 2 processes running on
same system
4. Block special file:(b):name given 2 special blocks of
hard disk
5. Sybolic file:(l):its a link or pointer to already
existing file
6. Socket file:(s):2 communicate betn 2 processes running on
different system in a network
7. Character special file:(c):handles only characted
formatted data
eg.stdin, stdout, stderr

Describe the zip/unzip command using gzip.

615

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How does shebang work?

594

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What is the difference between cat and more command?

627

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how to sort the content of the file based on numeric values

1254

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What does the command ' $who | sort –logfile > newfile' do?

772

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Name the unix command to find how many days the server has been up.

606

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What is .sh file?

624

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How many unix commands are there?

631

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Differentiate cmp command from diff command.

588

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What is grep short for?

558

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What is the comma to show the space allocation of files?

562

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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:

1764

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What is the use of sed command in unix?

601

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What is the use of tee command?

573

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Is grep faster than awk?

561

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