Question $1$

Write down the commands for the following operations $($a$-$f$)$:

a$.$a$.$a$.$a$.$ Write the complete command to schedule a reboot of the system $($Linux$)$ at $8$ AM$.$

b$.$b$.$b$.$b$.$ Write down the command to find out the whole word $$Institutions$$ from a text file named

$$Universities$.$txt$$ in a case sensitive manner.

c$.$c$.$c$.$c$.$ Using Method$-1$ for chmodchmodchmodchmod, set permission for CDUInfoCDUInfoCDUInfoCDUInfo$\_\_\_\_2000200020002000.$txt$.$txt$.$txt$.$txt in the format $----$wwwwxxxx rrrrwwww$--------$wwww$----.$

d$.$d$.$d$.$d$.$ Using Method$-2$ for chmodchmodchmodchmod, $$Deny ReadReadReadRead and WriteWriteWriteWrite$$ permission to others and owner for

CDUInfo$\_$CDUInfo$\_$CDUInfo$\_$CDUInfo$\_1985198519851985.$txt$.$txt$.$txt$.$txt$,$ but leave the ExecuteExecuteExecuteExecute permission intact.

e$.$e$.$e$.$e$.$ Append the text $$This is an additional line of information$$ to an existing text file named

NewFile.txtNewFile.txtNewFile.txtNewFile.txt$....$

f$.$f$.$f$.$f$.$ Write down the command for listing files with long descriptions and sort it based on the

modification time. Ensure that the hidden files are also displayed.