Answer Posted / meenu

if u want first 7 rows then
head -n7 <filename>
but if you want only 7th row then
awk 'nr==7 {print}' <fileanme>
or
tail -n4 <filename>|head -n1

What is the nmap command?

1121

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What command will change your prompt to myprompt?

1251

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What does the “echo” command do?

1097

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What is the size of time_t?

1147

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What do chmod, chown, chgrp commands do?

1222

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

1111

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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?

1143

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What is ctrl d?

1043

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What is the unix command to confirm a remote host is alive or not?

1137

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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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How can we use grep command in unix?

1140

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

1155

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Does cp command overwrite files?

1134

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How do you grep a case insensitive?

999

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What is the general format of unix command syntax?

1790

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