Given an initially empty stack s that accepts integers, the following operations are performed: s. push (10) s. push (20) s. push (30) s. push (40) s. pop () s. pop () s. push (50) s. push (60) s. push (70) s. pop () s. pop () s. push (80) s. push (90) s. pop ()

a) write out the composition of the stack after these operations. b) what sequences of integers was popped off the stack?

Mariah was working on a multimedia presentation that included both video and audio files. the file was huge, and she wanted to send it to her coworker in another office. she needed to reduce the size of the file so that it could be transmitted faster. the utility she used to do this was

Write the command that can be used to answer the following questions. (hint: try each out on the system to check your results.) a. find all files on the system that have the word test" as part of their filename. b. search the path variable for the pathname to the awk command. c. find all files in the /usr directory and subdirectories that are larger than 50 kilobytes in size. d. find all files in the /usr directory and subdirectories that are less than 70 kilobytes in size. e. find all files in the / directory and subdirectories that are symbolic links. f. find all files in the /var directory and subdirectories that were accessed less than 60 minutes ago. g. find all files in the /var directory and subdirectories that were accessed less than six days ago. h. find all files in the /home directory and subdirectories that are empty. i. find all files in the /etc directory and subdirectories that are owned by the group bin."

According to the video what are some tasks petroleum engineers perform check all that apply