|If the owner doesn’t have write permission on a file, but his/her
group has, can he/she edit it?
No. He/she can't,because the owner's permission overrides the group's.
To see list of files and directories, what permission required?
What are PIDs?
They are process IDs given to processes. A PID can vary from 0 to 65535.
How do you list currently running process?
How do you stop a background process?
How do you find out about all running processes?
How do you stop all the processes, except the shell window?
How do you fire a process in the background?
What does the command "kill -9 $! " do?
kills the last background process
If there is a process you want to run even after exiting the shell what is the command used?
Which command will get executed even after you log out?
Which signal cannot be trapped?
How to redirect standard error to a file?
What does the top command display?
top command displays the current ammount of memory occupied by the currently executing processes and the details. In addition to memory usage top command displays cpu usage and process details
What is the command to send message to all users who are logged in?
What is the command to send mail to other user?
How to open secondary mail box?
What do you do if you don't want to be interrupted by other users' messages?
Ans. mesg n
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