Windows Command Line

Question 1

What is located here?

C:\Windows\system32\cmd.exe

Answer 1

The windows command line

aka: cmd.exe

Question 2

what does this do?

aa > file.txt
bb&raquo_space; file.txt
type file.txt

Answer 2

write and create
write and append
read

“aa
bb”

Question 3

what is the difference?

command1 & command2
command1 && command2

Answer 3

1. execute both regardless of success

2. execute the later only if the former is sucessful

Question 4

what is the difference?

command1 & command2
command1 && command2

Answer 4

1. execute both regardless of success

2. execute the later only if the former is successful

Question 5

what is the difference?

command1 & command2
command1 && command2

Answer 5

1. execute both regardless of success

2. execute the later only if the former is successful

Question 6

what is the difference?

command1 | command2
command1 || command2

Answer 6

1. send output from first command to second command

2. if command1 fails execute command2

Question 7

what file extension is used for Windows command line scripts?

Answer 7

.bat

Question 8

what does the following mean?
SET x=qwe

if %x%==qwe (echo true)

if %x%==xyz (echo true)

if %x%==xyz (echo true) else (echo “does not contain xyz”)

Answer 8

these are windows comparison operators:

1. sets the variable
2. returns true
3. returns nothing
4. returns “does not contain xyz”

Question 9

what does the following mean?
SET x=qwe

if %x%==qwe (echo true)

if %x%==xyz (echo true)

if %x%==xyz (echo true) else (echo “does not contain xyz”)

Answer 9

these are windows comparison operators:

1. sets the variable
2. returns true
3. returns nothing
4. returns “does not contain xyz”

Question 10

What does the following do?

for %i in (.) do @echo FILE: %i

Answer 10

a for loop that lists files in a directory

”@” means to hide the prompt and just display the output