Answer Posted / arvind kumar

echo $? will give you status og last command.

Explain command to view process running?

1067

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How do I use nslookup?

1036

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What do chgrp command do?

1142

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What command is used to switching between users in unix?

1026

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Is command prompt unix?

1096

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

1239

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How do I clear my terminal history?

1090

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What is the use of awk command in unix?

1068

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What is grep short for?

997

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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:

2202

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What command will change your prompt to myprompt?

1251

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What is the functionality of a top command?

1051

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What is the difference between awk and grep?

1149

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Who command in unix?

1090

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What is ‘ps’ command for?

1134

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