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

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

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$.$ Using Method$-1$ for chmod, set permission for CDUInfo CDUInfo CDUInfo$\_2000.$txt in the format $-$wx rw$--$w$-.$

d$.$ Using Method$-2$ for chmod, $$Deny Read and Write$$ permission to others and owner for

CDUInfo$\_1985$ CDUInfo$\_1985.$txt$,$ but leave the Execute Execute Execute permission intact.

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

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

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.