Answer Posted / lokesh

There are lot of ways by which u can execute a file in Unix.

1. ./<filename>

2. <filename> #only if the permissions are in place for the
user

3. sh <filename> #uses bash shell

4. nohup <filename> #the process doesn't get killed even on
reboot

5. Batch <filename>

6. at <time> <filename> #to schedule the job

7. U can also autorun it by making an entry into the cron

What is the significance of the 'tee' command?

1147

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What are grep patterns?

1032

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What is the general format of unix command syntax?

1821

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Explain ‘library functions’ with respect to unix commands?

1128

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what is the advaantage of each user having its own copy of the shell?

2513

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How does the system know where one command ends and another begins?

2186

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1084

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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)?

1523

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1072

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1128

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What is the difference between grep and grep?

1071

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What is grep r?

1049

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hw will u use awk in replacing cahrs and files

3185

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What is “chmod” command?

1105

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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:

2214

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