Answer Posted / ravi mahant

SED has more features compared to simple GREP. we can grep
and edit and replace string using SED.
GREP is used to find the string and active process.

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

1193

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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:

2317

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Write a command to display a file’s contents in various formats?

1246

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What is the use of tee command?

1233

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What is updatedb?

1091

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Explain ‘system calls’ with respect to unix commands?

1149

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What do chmod command do?

1285

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Who invented grep?

1209

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What are some command words?

1202

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

1321

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Which command is used to create a directory?

1225

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What is grep r?

1160

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How do I use grep to search for a file?

1101

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What is difference between grep and find command in unix?

1276

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How can you see the command line history?

1185

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