Answer Posted / lakshmi sreekanth

All files accessible in a Unix system are arranged in
one big tree, the file hierarchy, rooted at /.
These files can be spread out over several devices. The
mount command serves to attach the file system found on some
device to the big file tree. Conversely, the umount will
detach it again.

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

1070

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What does 'mkdir' command do in UNIX?

1310

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Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

1221

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What does the metacharacter mean?

1135

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What is grep short for?

1049

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What is unix command line?

1254

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Which command will print your home directory on screen?

1081

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Why is it called a shebang?

1180

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Is there any method to erase all files in the current directory, along with its all sub-directories, by using only one command?

1223

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What is grep command in unix with examples?

1221

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What is the difference between cat and more command?

1295

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How many unix commands are there?

1157

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Which command is used to kill the last background job?

1333

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What is the use of tee command?

1160

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