ACSP Command-Line Interface 5

Question 1

What is the effect of running `chmod 755 script.sh` on the file `script.sh`?

Accepted Answer

Owner gets read/write/execute; group and others get read/execute

Answer

755 in octal means rwx (7) for owner, r-x (5) for group, and r-x (5) for others.

Question 2

Which command displays a real-time, continuously updating list of running processes on macOS?

Accepted Answer

top

Answer

`top` provides a live, auto-refreshing view of CPU and memory usage by process.

Question 3

A technician needs to search all `.txt` files in the current directory for the word 'error' (case-insensitive). Which command is correct?

Accepted Answer

grep -i 'error' *.txt

Answer

`grep -i` performs a case-insensitive search across the specified files.

Question 4

What does `diskutil list` display in macOS Terminal?

Accepted Answer

All attached disks and their partitions with identifiers

Answer

`diskutil list` enumerates all disks and their partition schemes, sizes, and BSD device identifiers.

Question 5

A support technician wants to redirect the error output of a command to a file called `errors.txt`. Which syntax is correct?

Accepted Answer

command 2> errors.txt

Answer

File descriptor 2 represents stderr; `2>` redirects standard error to the specified file.

ACSP - Apple Certified Support Professional Practice Test