Answer Posted / lakshmiprabha velusamy

mkdir <dir_name>

Is ‘du’ a command? If so, what is its use?

1155

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What is the difference between cat command and more command?

1208

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What is unix command?

1264

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How do I run a bash script?

1186

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Which command is used to kill the last background job?

1337

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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:

2268

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Write a command that will display files in the current directory, in a colored, long format.

1225

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Explain the steps that a shell follows while processing a command.

1236

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What does #!/ Bin sh do?

1068

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What is the use of egrep command in unix?

1187

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What is “chmod” command?

1176

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What is the command to compare two files in unix?

1125

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How is the command '$cat file2 ' different from '$cat >file2 and >> redirection operators ?

1315

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What does grep v grep do?

1079

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What is command substitution?

1367

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