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Systems designed to do a specific task on hardware optimized for only that purpose
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Linux originally only ran on: inizia ad imparare
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Bundling utilities, management tools, and application software with a Linux kernel is called a: inizia ad imparare
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A software release cycle describes: inizia ad imparare
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How often upgrades come out for software
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inizia ad imparare
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A fully certified UNIX distribution, Tightly integrated with Apple hardware, Partially based on code from the FreeBSD project
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inizia ad imparare
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Is generally backwards compatible with previous versions, Offers both desktop and server products, Has a scripting environment called PowerShell
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An interpreted programming language: inizia ad imparare
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Is converted into machine specific instructions as the program runs, Tends to offer more features than compiled languages
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The two main families of Linux shells are: inizia ad imparare
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In virtualization, what are the host and guest? inizia ad imparare
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The host is the machine that runs the virtual machines, A guest is a virtual machine
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inizia ad imparare
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Which of the following are properties of a strong password? inizia ad imparare
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Includes symbols, At least 10 characters long, A mix of upper and lower case
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A license where you don’t have access to the source code is called: inizia ad imparare
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A copyleft provision in a software license means: inizia ad imparare
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If you redistribute the software, you must distribute the source to any changes you make
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The Free Software Foundation believes that: inizia ad imparare
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Software should be free to modify, Software should be free to share
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What does it mean when a work is placed in the public domain? inizia ad imparare
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The author has relinquished the copyright on the work
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The semicolon (;) can be used to separate multiple commands to be inizia ad imparare
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To be able to output messages to the screen, use the _______ command: inizia ad imparare
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The _______ command will print a list of the commands that you’ve previously executed. inizia ad imparare
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HOME is an example of _________. inizia ad imparare
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The directory where additional documentation for software packages most likely can be found is: inizia ad imparare
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To start searching a man page, the first key you press is: inizia ad imparare
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To get help on using the info command, execute: inizia ad imparare
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The _____ command can be used to find any file, not just commands or man pages. inizia ad imparare
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Hidden files are files that begin with what character? inizia ad imparare
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The top-level directory on a Linux system is represented as: inizia ad imparare
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The ls command without options or arguments... inizia ad imparare
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... lists the contents of the current directory.
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The command ls -S will sort files: inizia ad imparare
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By size, largest to smallest
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When using the cp command, you must provide both a source and a destination.? inizia ad imparare
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Which option can be used with the rm command to prompt before deleting? inizia ad imparare
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Which command would list files that do not begin with a “T” or a “W”? inizia ad imparare
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In general, for which of the following would you want to use lossless compression? inizia ad imparare
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You type gzip myfile. tar. What happens? inizia ad imparare
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myfile. tar is removed, myfile. tar. gz holds a compressed version of myfile. tar
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Which command will show what is inside the compressed tarball with a name of foo. tar. gz? inizia ad imparare
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By default, the zip command replaces uncompressed files with compressed files. inizia ad imparare
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Error messages generated by commands are sent where by default? inizia ad imparare
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Which of the following commands will display only lines that begin with test? inizia ad imparare
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Which of the following commands will display lines that contain either start or end? inizia ad imparare
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A file begins with #!/bin/csh. This means: inizia ad imparare
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Running the script will invoke /bin/csh to interpret the rest of the file
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Most of nano’s commands take the form of inizia ad imparare
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Control and another character
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The if command looks for what exit code to consider a condition to be true? inizia ad imparare
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0
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The number of users logged in is in a variable called USERS. How would you test to see if 5 users are logged in? inizia ad imparare
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Which of the following are valid partitioning types? inizia ad imparare
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Software that allows hardware devices to communicate with the installed operating system is called? inizia ad imparare
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Which of the following commands will check hard disk GPT partitions? inizia ad imparare
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The process (ps) command shows only processes running in the current shell by default. inizia ad imparare
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The free command outputs statistics about: inizia ad imparare
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Which file contains the information passed to the kernel at boot time? inizia ad imparare
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To make changes permanent for kernel parameter files found under /proc/sys, the following file can have entries added to it: inizia ad imparare
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Which of the following commands will display the IP address on a Linux system? inizia ad imparare
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The RSA key fingerprint allows the dig command to connect to remote systems.? inizia ad imparare
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When issuing the service network restart command, which of the following occurs? inizia ad imparare
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... takes down all network interfaces, re-reads all related configuration files and then the networking for the system is restarted.
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Which of the following commands can be used to display socket statistics, and supports all major packet and socket types? inizia ad imparare
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Which of the following commands will display the groups that the user bob belongs to? inizia ad imparare
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Traditional UNIX systems allowed users to belong to how many groups? inizia ad imparare
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A value of 0 in the “minimum” password aging field means the user cannot change their password. inizia ad imparare
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Sudo privileges allow users to execute commands as another user? inizia ad imparare
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The first line of this command displays how long the system has been running since being rebooted. inizia ad imparare
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Which option for the usermod command can be used to specify a user’s group ID (either primary or secondary)? inizia ad imparare
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The groupmod command can be used to add users to a group. inizia ad imparare
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Which of the following files contains user IDs? inizia ad imparare
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Which of the following commands, run as root, will prevent the user bob from logging in? inizia ad imparare
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What directory contains a user’s home directory? inizia ad imparare
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GIDs under 500 (or 1000) are usually reserved for what kind of groups? inizia ad imparare
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A user cannot delete a file if they do not own it. inizia ad imparare
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The chown command permits changing group ownership done by root only. inizia ad imparare
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Which of the following commands will list hidden files as well as their ownership? inizia ad imparare
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Which of the following commands will set setuid for /usr/bin/program? inizia ad imparare
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chmod 4755 /usr/bin/program
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Setting setgid on a directory... inizia ad imparare
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... will set the group owner of all files created in the directory to the group owner of the directory.
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Which of the following commands would create a hard link, link to file? inizia ad imparare
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