Answer Posted / saroj kumar rout (tcs)

A process is an executing program identified by a unique
PID (process identifier). To see information about your
processes, with their associated PID and status, type

% ps

A process may be in the foreground, in the background, or
be suspended. In general the shell does not return the UNIX
prompt until the current process has finished executing.

Some processes take a long time to run and hold up the
terminal. Backgrounding a long process has the effect that
the UNIX prompt is returned immediately, and other tasks
can be carried out while the original process continues
executing.

Which command is used to find whether the system is 32 bit or 64 bit?

812

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Why is shebang used?

796

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What is grep command in unix with examples?

809

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Which unix command to make a new directory?

785

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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:

1951

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

792

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What is the command to find hidden files in the current directory?

818

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How do I use grep to find a file?

801

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What is grep short for?

734

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What does awk stand for?

786

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What is unix command line?

799

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Differentiate cat command from more command.

763

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What does the “echo” command do?

826

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Can you explain a little bit about command substitution?

803

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What is awk command used for?

774

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