Free RedHat RH033 Practice Exam with Questions & Answers | Set: 2

The mput command is used to upload multiple files simultaneously.

Answer option C is incorrect. The put command uploads one file each time you use the command. It is not used to upload multiple files at a time.

Answer option D is incorrect. The get command is used to download one file at a time.

Answer option B is incorrect. The mget command is used to download multiple files at a time. It is not used to upload multiple files.

According to the scenario, since John wants to copy all files with the .dat extension from /home/john

to /home/maria while preserving the file

attributes such as timestamps, mode, and ownership, he will use the cp -p /home/john/*.dat

/home/maria command to accomplish the task. The cp -p command copies files from source to destination while preserving the file attributes, such as timestamps, mode, and ownership.

Answer option B is incorrect. The cp -R /home/john/*.dat /home/maria command will recursively copy all .dat files from source to destination; however, it will not preserve the file attributes.

Answer option D is incorrect. The cp -l /home/john/*.dat /home/maria command will link all .dat

files from /home/john to /home/maria instead of copying them.

Answer option C is incorrect. The cp -l /home/maria/*.dat /home/john command will link all .dat

files from /home/maria to /home/john instead of copying them.

The cat data.txt.* command will display both the splitted files, and the > command will redirect the output into a new data.txt file.

What is the cat command?

The concatenate (cat) command is used to display or print the contents of a file.

Syntax: cat filename

For example, the following command will display the contents of the /var/log/dmesg file: cat /var/log/dmesg

Note: The more command is used in conjunction with the cat command to prevent scrolling of the screen while displaying the contents of a file.

What is > command?

The > command is used for storing the output generated by different commands. It creates a file specified to store the output. If the specified file already exists, it overwrites that file.

Answer option A is incorrect. This command will open a new file data.txt.* into the vi editor.

Answer option D is incorrect. This command will give the vi editor a warning "output is not to a terminal" since the vi terminal cannot be redirected into the data.txt file.

Answer option B is incorrect. The less command displays only the first file data.txt.aa, and the > command redirects the output into the data.txt file. Hence, John will not get the desired output using this command.

You will use find ~ -perm -002 -exec chmod o-w {} \; command to fix other writable files in your home directory.

Answer option B is incorrect. The find /home -type d -ls command is used to do an ls -l style listing of all directories in /home/.

Answer options A and D are incorrect. There are no such commands in Linux.

In Linux, the directories are simply special files that have an inode and a data section.

The contents of the data section are a list of the directory's contents. In order to enter a directory or list its contents, a user must have the Read permission on the directory. The Write permission is required to modify that list.

The useradd or adduser command is used to add a user on the Linux operating system.

The less command is most useful for viewing large files. The less command displays the output of a file one page at a time. Viewing large files through cat may take more time to scroll pages, so it is better to use the less command to see the content of large files.

Answer option B is incorrect. The cat command is also used to view the content of a file, but it is most useful for viewing short files.

Answer option A is incorrect. The cp command is used to copy files and directories from one location to another.

Answer option D is incorrect. The touch command is not used to view the content of a file. It is used to create empty files or to update file timestamps.

This command looks for files on the system whose data has been changed exactly five days ago.

Using the -f option causes tail to continue to display the file in real time, showing added lines to the end of the file as they occur.

What is the tail -f command?

The tail command is used to display the last few lines of a text file or piped data. It has a special command line option –f (follow) that allows a file to be monitored. Instead of displaying the last few lines and exiting, tail displays the lines and then monitors the file. As new lines are added to the file by another process, tail updates the display.

This is particularly useful for monitoring log files. The following command will display the last 10 lines of messages and append new lines to the display as new lines are added to messages: tail -f /var/adm/messages

Answer option C is incorrect. The cat command simply shows the content of the file when it was last opened, cat does not continue to show updates of the file.

Answer option D is incorrect. The tail -n 3 /var/adm/messages command is used to show most recent entries in log file but it will not continue to show updates of the log file.

Answer option B is incorrect. The tail command will show the last few lines of the log file, but it will not continue to show updates of the log file.

The tar -cvf filename.tar directory/file command is used to create a tar file. filename.tar represents the file you are creating and directory/file represents the directory and file you want to put in the archived file.

Answer option C is incorrect. The tar -tvf filename.tar command is used to list the contents of a tar file.

Answer option D is incorrect. The tar -xvf filename.tar command is used to extract the contents of a tar file.

Answer option A is incorrect. There is no such command as tar -ivf filename.tar directory/file.