This is used to get extra permission on a specific files or directory . If a file has SUID permission , it is executed by the file owner permission rather than the user who execute it . Whereas SGID is used to set group ownership on a specif directory . If any file with sticky bit set , then it will only deleted by the file owner or root .
Top command display processor activity and displays tasks managed by kernel in real time . This command display processes with detailed information like process name , pid , cpu uses , memory uses , nice value and many more things . It also shows some information about your system like average load , ram uses , zombie process .