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 time_t?

1129

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How do I run a bash script?

1198

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How do I find previous commands in unix?

1202

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How do I search for a file in unix command?

1029

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What is the comma to display different lines that are found when compare two files?

1173

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Explain ‘library functions’ with respect to unix commands?

1184

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Describe the zip/unzip command using gzip.

1173

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What is ‘ps’ command for?

1197

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What is the difference between cat command and more command?

1219

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Which command can you use to find the currently running process in unix server?

1140

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What do chgrp command do?

1236

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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:

2280

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Which command will print your home directory on screen?

1094

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What is a bash command?

1194

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What are reported commands?

1145

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