The commands to put data from a buffer into the document are p and P. p puts the data below the current line and P puts the data above the current line.

What is the p command?

The p command is used to put (paste) data from a buffer into the document. If data is line oriented

(a line or a paragraph), the p command will open a new line below the current line and place the data on this line. If data is character oriented (a letter, word, or sentence), the p command will place the data after the cursor.

What is the P command?

The P command is used to put data from a buffer into a document. How this command works depends on the nature of the data in the buffer. If the data is line oriented, the P command will open a new a line above the current line and paste the data there. If the data is character oriented, the P command will put the data before the cursor. Answer option D is incorrect. The ps command displays the status of the current processes in Linux. Answer option A is incorrect. The :set command lists a small number of important configuration items in vim.

The fdisk command is a menu-based command available with Linux for hard disk configuration. This command can perform the following tasks:

Delete a partition on a hard disk.

Create a partition on a hard disk.

Change the partition type.

Display the partition table.

Note: The sfdisk command-line utility is an alternative to the fdisk command.

Answer option C is incorrect. In Linux, the mount command is used to mount and display disks, partitions, and file systems. Mounting refers to the process in which the operating system prepares the media to be read.

Anwer option D is incorrect. The File System Check (fsck) command is used to scan all disks and partitions, and it repairs them if required. The

fsck command should be run only on an unmounted file system.

Note: The function of the fsck command is similar to that of the Window ' s scandisk utility.

Answer option B is incorrect. There is no such command as crpar in Linux.

The lastb command is used to view failed login attempts on a user account.

What is the lastb command?

The lastb command is used to view bad login attempts. The command searches in reverse order through the database file named /var/adm/btmp in order to display the required information.

Answer option C is incorrect. The lastlog command reports the most recent logins of all users or of a given user.

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

The lpstat -a, lpstat -l commands list the configured printer in the network.

Answer option D is incorrect. The lpstat -r command shows whether or not the CUPS server is running. Answer option C is incorrect. The lpstat -o command shows the jobs queue on the specified destinations.

The locate command queries a database for all pathnames which match the specified pattern. The –n option followed by an integer limits the results to a specific number. This command would display only 10 results in a search for files that have an .html extension.

What is the locate command?

The locate command queries a database for all pathnames which match the specified pattern. The database is updated periodically (usually weekly or daily), and contains the pathnames of all files which are publicly accessible.

Syntax for the locate command is as follows: locate [options] pattern ...

Here, pattern means one or more file patterns.

The following options are used with the locate command:

Answer option A is incorrect. This command uses the star wildcard to display all files on the system that have the .html filename extension.

Answer option D is incorrect. The -q option is used to suppress error messages, such as those that might be returned in the event that the user does not have permission to access designated files or directories. Thus, this command would suppress any error messages regarding tothis search.

Answer option B is incorrect. When this command is run on the terminal an error message will be displayed on the screen.

The lpc command can be used to rearrange jobs awaiting printing, as well as to disable/enable a

printer or queue and find the status of printers.

Answer option D is incorrect. The lpr sends a job to the queue to be printed.

Answer option A is incorrect. The lpq views the contents of the queue.

Answer option C is incorrect. The lprm removes a job from the queue.

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.

Ctrl-w key-combination with an arrow key is used to jump from one window to another. This will move you to the next window in whichever direction the arrow would normally move your cursor. Instead of the arrow keys, you can also use

vi ' s traditional h, j, k and l keys for the same effect.

Answer options B and A are incorrect. Ctrl-w, s and Ctrl-w, v key-combinations are used to view a file in two windows in a single vim screen.

Ctrl-w, s splits the screen horizontally and Ctrl-w, v splits the screen vertically.

Answer option D is incorrect. Ctrl-w, q is used to quit from your current window.

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.

You can view all running processes with the help of the ps -aux command. Hence, any of the ps –aux commands (i.e., ps -aux | grep cc, ps -aux

| more, or ps -aux) can be used to check whether the cc process is running on the computer.

Answer option B is incorrect. 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