Lpi 101-500 Actual Free Exam Questions & Community Discussion
Which program runs a command in specific intervals and refreshes the display of the program's output?
(Specify ONLY the command without any path or parameters.)
(Specify ONLY the command without any path or parameters.)
Correct Answer:
watch
Explanation:
The program that runs a command in specific intervals and refreshes the display of the program's output is watch. This command is used to run any designated command at regular intervals and displays the output of the command on the terminal window. It is useful when you have to execute a command repeatedly and watch the command output change over time. The syntax of the watch command is:
watch [options] command
The options can modify the behavior of the watch command, such as how to format the output, how to handle signals, or how to enable color. The command is the command that you want to run and monitor. The default interval between each execution of the command is 2 seconds, but you can change it with the -n or --interval option. For more help using the watch command and its options, run man watch or visit this link.
Explanation:
The program that runs a command in specific intervals and refreshes the display of the program's output is watch. This command is used to run any designated command at regular intervals and displays the output of the command on the terminal window. It is useful when you have to execute a command repeatedly and watch the command output change over time. The syntax of the watch command is:
watch [options] command
The options can modify the behavior of the watch command, such as how to format the output, how to handle signals, or how to enable color. The command is the command that you want to run and monitor. The default interval between each execution of the command is 2 seconds, but you can change it with the -n or --interval option. For more help using the watch command and its options, run man watch or visit this link.
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
Correct Answer: A
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What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)
Correct Answer: C
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To what environment variable will you assign or append a value if you need to tell the dynamic linker to look in a build directory for some of a program's shared libraries?
Correct Answer: E
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What is the default action of the split command on an input file?
Correct Answer: D
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How do shadow passwords improve the password security in comparison to standard non-shadow passwords'?
Correct Answer: B
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In compliance with the FHS, in which of the directories are man pages found?
Correct Answer: A
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After editing the TCP wrapper configuration to grant specific hosts access to a service when do these changes become effective?
Correct Answer: C
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Which file should be edited to select the network locations from which Debian installation package files are loaded?
Correct Answer: E
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Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?
Correct Answer: B
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Which command is used to create and initialize the files used to store quota information? (Specify ONLY the command without any path or parameters.)
Correct Answer:
quotacheck
Explanation:
The command that is used to create and initialize the files used to store quota information is quotacheck. This command scans one or more file systems for disk usage, creates, checks, and repairs quota files. The quota files are named aquota.user and aquota.group and are located in the root of the file system.
The quotacheck command should be run before using quotaon to enable disk quotas.
Explanation:
The command that is used to create and initialize the files used to store quota information is quotacheck. This command scans one or more file systems for disk usage, creates, checks, and repairs quota files. The quota files are named aquota.user and aquota.group and are located in the root of the file system.
The quotacheck command should be run before using quotaon to enable disk quotas.
Which of the following commands will print the last 10 lines of a text file to the standard output?
Correct Answer: C
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Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)
Correct Answer: B
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