Question 1

Which of the following commands is used to identify the type of file by context?
A)ls
B)cat
C)file
D)more

Accepted Answer

The "file" command is used to determine the type of a file based on its content and metadata, making it the correct choice for identifying a file's type by context.

Question 2

The filed separator in cut command is specified with
A)-a option
B)-d option
C)-r option
D)-x option

Accepted Answer

The field separator in the cut command is specified with the -d option, which stands for delimiter. This option allows users to define the character that delimits fields in the input text.

Question 3

Which of the following options will be used to display number of blocks used by a file?
A)-c
B)-i
C)-d
D)-s

Accepted Answer

The "-s" option with the ls command is used to display the number of blocks used by a file.

Question 4

Which option will be used with touch command to change the access time?
A)-a
B)-b
C)-t
D)-h

Accepted Answer

The "-a" option with the touch command is used to change the access time of a file without modifying the modification time.

Question 5

Which command is used to make all files and sub-directories in the directory (progs) executable by all users?
A)chmod -r a+xprogs
B)chmod -r 222 progs
C)chmod -1 a+xprogs
D)chmod -x a+xprogs

Accepted Answer

The correct command to recursively make all files and sub-directories in a directory executable by all users is `chmod -R a+x progs`. However, the option provided in the question has a typo with `-r` instead of the correct `-R`. Despite this, option A is the closest to the correct syntax for achieving the described task. The correct flag for recursive operation is `-R`, and `a+x` adds execute permission for all users.

Question 6

Which command is used to display and create files?
A)cat
B)vi
C)ed
D)lyrix

Accepted Answer

The 'cat' command is used to display the contents of a file and can also be used to create files by redirecting output.

Question 7

The second set of the three permissions (r-) indicates that
A)group has read permission only
B)other has read permission only
C)owner has read permission only
D)group has write permission only

Accepted Answer

The second set of permissions in a Unix/Linux file system refers to the group permissions. "r-" indicates read permission is granted, but write and execute permissions are not.

Quiz 4: Common Linux Commands and File Operations

Which of the following commands is used to identify the type of file by context?

The filed separator in cut command is specified with

Which of the following options will be used to display number of blocks used by a file?

Which option will be used with touch command to change the access time?

Which command is used to make all files and sub-directories in the directory (progs) executable by all users?

Which command is used to display and create files?

The second set of the three permissions (r-) indicates that