Answer Posted / cr7

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How can you see the command line history?

1145

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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:

2274

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What do chmod, chown, chgrp commands do?

1295

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

1156

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What are awk commands?

1169

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What is the significance of the 'tee' command?

1203

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What does the md command do?

1156

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What is the first character of the output in ls l command?

1217

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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)?

1578

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What are the general commands in using unix os for a beginner?

1175

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

1267

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What is the function of grep command in unix?

1187

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What does this command do,"$more readme.txt“?

1166

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Using unix command how to display no of records in oracle?

1168

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What is the nmap command?

1199

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