T/F – The rmdir command automatically removes a directory and all of its subdirectories and files. |
False |
T/F – You can use wildcard metacharacters with the find command. |
True |
The SGID allows regular users to execute a binary compiled program and become a member of the group that is attached to the file. |
True |
Shell scripts do not require the execute permission in order to be run the same way binary programs are run. |
False |
The database for the locate command can be updated manually by using the updatedb command. |
True |
The File system Hierarchy Standard specifies what directory as containing the Linux kernel and the boot loader configuration files? |
/boot |
The File system Hierarchy Standard specifies what directory as the root user’s home directory? |
/home |
What command can be used to copy files? |
cp |
What command takes a list of arguments specifying the absolute or relative pathnames of files to remove? |
rm |
What command utilizes a premade database that contains a list of all the files on a system: |
locate command |
The contents of a certain variable in memory can be viewed using which metacharacter in combination with the echo command? |
$ |
What section of a filesystem contains information about the filesystem in general? |
superblock |
In order to create a hard link, what command must be used? |
ln |
The section of an inode that stores permissions is referred to as what? |
mode |
In a file’s mode, a permission that is unavailable is represented by what character? |
– |
What permission grants a user the ability to open, read, and edit the contents of a file? |
write |
What argument can be used with the chmod command to add read permission and remove write permission for a group on a file? |
g+r-w |
When using the chmod command, the mode rwx can be represented by which number? |
7 |
In order to set all of the special permissions on a certain file or directory, which command should be used on a file named filename? |
chmod 7777 filename |
What does the setfacl -b command do? |
removes all extra ACL assignments |
In order to quickly create an empty file, what command can be used? |
touch command |
What permission (when applied to a directory) allows a user to enter the directory and work with directory contents? |
excecute |
What permission (when assigned to a file) grants a user the ability to open, read, and edit the contents of a file? |
write |
What mode corresponds to setting r-x: |
user |
What option, when added to the rm command, is commonly referred to as the -resume option? |
-r |
__________defines a standard set of directories for use by all Linux and UNIX systems, as well as the file and subdirectory contents of each directory. |
FHS |
To copy a directory full of files in Linux, you must tell the cp command that the copy will be _____(involve files and subdirectories too) by using the -r option |
recursive |
The _____ command only searches directories that are listed in a special variable called the PATH variable in the current BASH shell. |
which |
To create a(n) _____ link, you use the -s option to the ln command. |
symbolic |
When a user creates a file or directory, that user’s name and ______ becomes the owner and group owner of the file, respectively. |
primary group |
rwx |
7 |
rw- |
6 |
what are the three numbers representing rwx? |
421 |
r-x |
5 |
rw- rw- rw- |
666 |
r– |
4 |
rw-r-xrwx |
657 |
A special variable used to alter permissions by taking away select defaults? |
unmask command |
added to a ch or ls command for attributes? |
attr |
-wx-w-r-x |
325 |
Linux+ Chapter 04
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