Answer Posted / guest

while listing the file names by ls-l command we get hyphen
is the first character that shows it is a normal file and
if we d instead of hyphen(-) that is device file

What is rmdir command?

1119

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What is grep and how do you use it?

1119

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Describe the zip/unzip command using gzip.

1169

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Describe the usage and functionality of the command rm –r * in unix?

2109

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What command is used to switching between users in unix?

1089

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What is the command to find maximum memory taking process on the server?

1229

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What is command substitution?

1387

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What is the use of tee command?

1176

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Which command is used to restrict incoming messages?

1114

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What is .sh file?

1197

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What command is used to check the current users?

1138

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Name the various commands that are used for the user information in unix.

1093

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What is ‘ps’ command for?

1191

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What is a bash command?

1188

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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:

2275

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