1. What is the linux mascot?
2. What will you get if you try to read from the pseudo-device /dev/null?
3. What does the following line mean when it is run in a script '#!/bin/bash'?
4. By default what file contains encrypted user passwords?
5. The at command allows you to execute a command at:
6. What does GRUB stand for?
7. The jobs command
8. To use chown recursively, instead of using _recursive you can use:
9. Which is an example of a shell comment?
10. The run level in a system can be configured in the file _____.
11. The behavior of the system for each 'runlevel' is available in the _____ file.
12. To print the first 10 lines of one or more files to the standard output, you use the command:
13. uname -a will output...
14. what makes the command cd ../../
15. With which userspace is Linux typically paired?
16. The netstat command give information on:
17. To start another shell under the current shell you use the command:
18. The loaded modules in the kernel are listed in /proc/modules. You can get this list using the command:
19. mknod can create special file (used for sending or receiving data) of type:
20. SSH stands for _____.
21. If you wanted to execute a shell command in the background, which character would you put at the end of the command line?
22. What is the ssh command?
23. What does the pwd command do?
24. what the command 'cd ..' do
25. The Linux Kernel was written by?
26. What will show you all the subdirectories of the current directory?
27. Which directory contains all the files needed to boot the Linux system?
28. What makes up a Linux kernel?
29. 'mkfs' is used to:
30. How do you activate the noclobber shell option?
31. Executing 'pwd' in shell will return:
32. Fedora Linux uses _____ packages.
33. Ubuntu is based on...
34. To query DNS (Internet domain name) servers, you use the command:
35. _____ is a Linux desktop environment'.
36. What is the right command to save file and exit in Vim?
37. Which firewall is most commonly used on Linux?
38. what the 'cd /' command do?
39. What is GNOME ?
40. What does it means when the ps commands shows a 'Z' in the status column for a process?
41. To repeat the last command in the bash shell history, type...
42. Which answer assists you in finding help on the whois command?
43. What is swap?
44. As a privileged user, you may set the hostname with the command:
45. LILO...
46. How do you view the documentation for the command 'kill' in the Linux terminal?
47. Add this symbol to a command to run it in the background
48. On Red Hat Linux and its derivatives, which of the following commands will be appropriate to check whether a particular 'package' is installed or not?
49. To read one or more files and type them on standard output, you use:
50. What command can be used to delete a directory, recursively searching for files and other directories and deleting them?
51. /etc/resolv.conf is ...
52. To transfer files in an insecure way to and from a remote network site host, you use the command:
53. The command du -h ~
54. Which tool is similar to find except that it uses an index to search?
55. The command 'free' reports on:
56. LVM is...
57. Consider using the command 'cd /a/b/c', then executing 'cd ..'. What does this last command do?
58. To access the value of an environment variable, we _____.
59. What is a zombie process?
60. What does the Linux 'no' command do?
61. LILO is _____.
62. the '-r' switch to the mount command will:
63. How would you create an alias for the cat command?
64. Which of the following is not an editor?
65. How to reveal detailed information about CPU?
66. Which return value from an ioctl request indicates success?
67. mount -a' will load all filesystems listed in:
68. What does 'chmod 755 file' accomplish?
69. If you use the rm command to accidentally delete a file, how can you get the file back?
70. Which of the following accurately describes a 'ping?'
71. What is the maximum length of a file name on Linux?
72. printenv will:
73. If a host is called HHH, 'rstat HHH' will:
74. In a date +format, you add the hour in 24 hours format using:
75. _____ command starts the default desktop environment.
76. True or false: The Linux OS is not affected by malware.
77. When does /tmp normally get cleaned out?
78. lsof command means:
79. If DDD is a non empty directory, and you execute 'rmdir DDD', it will:
80. You want to load the main kernel module for USB support. Which command would help you achieve this task?
81. What flag makes 'ls -l' print file sizes in human readable format (e.g. 1K, 231M, 2G, etc)?
82. Why hasn't ZFS been added to the Linux kernel?
83. Is it possible to increase SWAP space without rebooting?
84. To report the amount of free disk space available on all mounted file systems you use the command:
85. command1 | command2 will?
86. what makes the command 'netstat -s'
87. What does the 'uname' command do?
88. What does the $ represent within the context of a shell command?
89. modprobe...
90. How do you redirect stderr to stdout?
91. To display contents of files on standard output, you could use the command:
92. How do you show all processes being run by a particular user?
93. 'mv -f' will:
94. To see the kernel routing tables, you do:
95. GRUB stands for _____.
96. In a ps command output, the PPID displays the:
97. modinfo [options] ofile' will:
98. Which Run Level provides 'Full multiuser mode with network and X display manager'?
99. To create one or more directories with the mkdir command, which permissions in the directory's parent directory do you need?
100. _____ is not a 'Terminal Emulator'.
101. Typing the 'cd' command at the shell prompt will take you to the _____.
102. SSH uses _____ to authenticate remote computers.
103. To search one or more files for matching lines, which command may be used?
104. The mkraid command will:
105. What, according to bc, is 2^2?
106. Write a command to list all files with 5 characters in the name.
107. What binary format do Linux Executables use?
108. Executing the command 'init 6' will _____.
109. What is the uid of root?
110. How to display current iptables rules?
111. What is 'vmlinuz'?
112. For what purposes can socat be used?
113. pwconv will...
114. What does it mean when a variable is unbound?
115. Can I have swap partition and swap file activated at the same time?
116. options (switches) to the ps command may start with:
117. How do you find all files in /etc which end in .conf?
118. rev will:
119. Single User Mode equivalent to _____.
120. To write a message to all users (on their terminals) over a network, you use:
121. What is not part of the Linux Kernel?
122. How do you make a list of all filenames in the /tmp directory that the contain the text 'user', regardless of case?
123. 'mkdir -m 444 any' will:
124. If the system is not in runlevel 0 or 6, before performing a power-off operation, the poweroff command will execute:
125. What program is launched by the kernel at system start up first?
126. 'Run Level Zero (0)' stands for _____.
127. To send a file to the printer spool queue, you use the command:
128. Information about modules, like module dependency, and where certain types of modules reside in the filesystem, is found in:
129. What source control system does the Linux kernel use?
130. Reset will...
131. Which of the following files 'probably' contains the default 'windows manager settings'?
132. Given that the ip command is installed, what is the effect of the command ip a ls
133. Which of the following commands will correctly display the version of the Linux kernel running?
134. Which of the following commands can be used to change the run level?
135. The user smith issued the egrep '^[[:upper:]]' words.txt command. What does this command do?
136. In bash you can use these quote marks for command substitution.
137. What happens if you try to write to /dev/null and /dev/zero?
138. What will 'cat /proc/mdstat' tell you?
139. what the 'netstat -a' command do?
140. The backslash on the command line indicates
141. In a BASH script this command line parameter contains the scripts own name:
142. 'mktemp -d' will:
143. What does permission 641 (octal) mean?
144. To format a device as a Linux second extended filesystem (ext2), you use the command:
145. In the command 'mv source target', if source is a directory and target is an existing directory, the result will be to:
146. what the 'netstat -l' command do?
147. The acronym WINE stands for:
148. Which of the following is a way to update mlocate's index?
149. Running 'man --locale=LLL' instructs man to override the value of which of these functions?
150. 'mv -u' will:
151. newaliases will:
152. To do unlimited precision arithmetic calculations from the shell, you use:
153. nfsstat will...
154. How find the current system runlevel?
155. What is the expected output of the following command: unset x; test -z $x && echo 1
156. What does the Linux 'yes' command do?
157. You need which of the following access modes in order to cd to a system directory?
158. The ________ command can be used to 'kill' the 'X server'.
159. What is the purpose of the 'tset' command?
160. Which of the following commands shows routing table information?
161. What is cgroups ?
162. What is the file /etc/nsswitch.conf?
163. Man pages are written using what markup language?
164. what the 'netstat -ac 5 | grep tcp' command do?
165. How are typical native code debuggers implemented?
166. If no filesystems are specified on the command line, and the _____ option is not specified, then the command 'fsck' will default to checking filesystems in '/etc/fstab' serial order.
167. As a non-privileged user, if you use 'nice', it will:
168. To format a device as an ext3 (journaled) Linux extended filesystem, you use the commands:
169. /bin/true is a command whose exit status is always:
170. Which command is used for initializing physical volume(hard disk, or partition) for LVM usage?
171. To create hard-links instead of copies with the cp command, you use:
172. What is the maximum size of an ext3 file system?
173. In POSIX-compatible shell, what will you see if you enter 'echo foo*' when there are no files beginning with 'foo' in the current directory?
174. In a file delimited by commas, what command will print the 3rd column of data:
175. what the 'netstat -lx' command do?
176. Which one of these lines will check if the directory 'foo' exists and create it if it doesn't?
177. Which command will tell you how long a system has been up and running since it was last booted?
178. What does the command 'set $(date)' do?
179. The cksum command will read from standard input if:
180. The ____ command will display LVM volume groups.
181. mklost+found:
182. in terms of system calls, when bash process executes cat </tmp/input command it does the following:
183. What are the six fields of /etc/fstab?
184. The equivalent to whatis command is:
185. modprobe -d:
186. What is the result of echo '$MyVar' ?
187. A user has a file called OriginalFile, and then creates a hard link to it by executing the following command (brackets not part of command): [ cp -l OriginalFile CopyOfFile ] Which of the following are true?
188. What is the default delimiter for the command 'cut'?
189. Apart from SIGKILL, which other signal cannot be caught nor ignored?
190. What file will show you how the kernel was started?
191. Can `ip` in iproute2 take multiple commands in a row?
192. Will tar extract information about file permissions?
193. The last privileged port (any port that can't be opened by anyone else but the root user) is:
194. In chgrp command, the letter you use to add a sticky bit (e.g., to prevent removal of files by non-owner from a directory) is:
195. newgrp will:
196. To block/allow regular users to send write messages to your session, you use:
197. In BASH scripts the symbols '<<' indicate...
198. What will you get if you try to read from the pseudo-device /dev/zero?
199. Which file would be returned by ls File[A5] ?
200. Can you make hard links to directories just as you can to ordinary files?
201. What is the correct value for (rwxrwxrwx) No restrictions on permissions. Anybody may do anything.
202. Command for Change file owner and group ?
203. Which of these media players does not run on Linux ?
204. Correct form of Reverse DNS Lookups ?
205. The correct command to install a downloaded Debian package, '~/Downloads/mypackage.deb' is
206. The default private generated by 'ssh-keygen' is located at _____ and should have permissions ___.
207. Compress or decompress named file(s) ?
208. Which one is correct DNS Lookup Command ?
209. The ''rm'' command is used to:
210. What is the command giving access to the help of an application?
211. Which of the following is not a text editor for Linux?
212. Which of the following is not a Groupware solution for Linux?
213. Which of the following switches forces rm to ask for confirmation?
214. Which of the following commands creates a new user along with its home directory and populates it with files from /etc/skel?
215. Which of the following commands will not log you out of a bash terminal?
216. What is the command used to upgrade all installed packages on a machine running Ubuntu?
217. What is the interface used to allow user applications to use the video hardware without going through the X server called?
218. Which of the following commands is used in conjunction with slocate?
219. Which of the following realtime systems uses Linux?
220. Which of the following utilities will not help you convert a video from one format to another under Linux?
221. Which of the following commands is not network-related?
222. Which of the following commands allows you to specify the default file mode creation mask?
223. Which of the following commands reconfigures Xorg on a Debian machine?
224. Under Linux, the user directories are usually stored in_______.
225. Which of the following file systems can not be used for /?
226. Within the grub interface, which of the following commands do you issue to install the GRUB boot-loader to the Master Boot Record of the first IDE disk?
227. Which of the following crontab lines sets up the execution of schdcmd every 1st and 15th of the month at 7:55 and 18:55?
228. Which of the following distributions can not be backed by a support contract from its vendor?
229. Which of the following rpm packages cannot be installed on an amd64 machine with the appropriate system?
230. As of Linux 2.6, what is the default sound system?
231. Which of the following commands disables a site or virtual host in Apache under Debian/Ubuntu?
232. Which of the following commands does not display active processes?
233. What is a daemon?
234. Which command line utility allows you to control and monitor the health of hard disks?
235. Which of the following commands can be used in a script to check and repair the disk partition /dev/sda2 using the ext3 filesystem?
236. What is Edubuntu?
237. Which of the following is not a usual filename to be found in a user configuration directory for OpenSSH?
238. How do you set an environment variable FOO with bash?
239. Which command redirects all outputs from cmd to out.log with a bash terminal?
240. Which of the following options of the rm command will remove files and directories recursively without asking for confirmation?
241. Which of the following software packages can you use to manage an Uninterruptible Power Supply (UPS) under Linux?
242. Which of the following licenses is not GPL-compatible?
243. What is the name of the driver specification used to print to PostScript printers?
244. Which of the following is not a Unix/Linux shell?
245. Which of the following programs allows, under conditions, users to execute commands as root?
246. On a Debian GNU/Linux system, which of the following is a standard path to GRUB's configuration file?
247. With a umask set to 027, what is the initial mode for a newly created file?
248. What is LAMP?
249. Which of the following utilities displays the RAM usage?
250. Which of the following commands will help you diagnose a software RAID system under Linux?
251. Which of the following will be of no use for running a Windows program on a Linux system?
252. What are the standard commands to install a program from source?
253. Which of the following utilities can you use for CCTV under Linux?
254. Which of the following is the most appropriate and fastest utility to use when regularly copying a slightly modified version of a big file, for example a video montage, to a backup server?
255. What effect does a set sticky bit have on a file in a Linux system?
256. Which of the following virtualization solutions doesn't work on Linux x86?
257. Which of the following protocols is not encrypted?
258. Which of the following addresses can be used to access the CUPS printer management system on the local machine?
259. Which of the following utilities is used to change the priority of a process in the kernel's scheduler?
260. CUPS is a _______.
261. What is the de facto antivirus software for an e-mail server under Linux?
262. Which of the following file extensions is not used by a Linux distribution package management system?
263. You want to show every line (with the file name and the line number) in the log files of a Ubuntu system that does NOT contain the string 'info' (case insensitive). What is the proper command?
264. What does the command 'tar zxf latest.tgz' do?
265. What does the command 'du -hcs *' do?
266. How do you update the last accessed time of a file?
267. Which of the following options of ln will allow you to create a symbolic link?
268. On a Linux system without the Shadow Suite installed, user passwords are stored in _______.
269. Which of the following can not be done with the help of ssh?
270. Where are the configuration files for a scanning device located?
271. Which of the following command lines can be used as root to configure the first Ethernet card with the IP 192.168.0.1, and the default gateway as 192.168.0.10?
272. Which of the following commands is used to resume a process suspended with the Ctrl-Z shortcut?
273. What is the default port used by ssh?
274. Which of the following commands allows you to run a graphical application on the machine 'remotemachine' while allowing you to control it from your system?
275. Which of the following commands allows you to watch the file /var/log/messages as it is written?
276. What option should you use with LILO or GRUB to boot a Linux system in the maintenance mode, runlevel 1?
277. What does the command 'df -h' do?
278. What is the function of the curl command?
279. Which of the following is not a component of a Linux mail server or gateway?
280. Which of the following is prohibited by the GPL under which Linux and most Linux-based software are licensed?
281. Which of the following utilities can you use to capture and analyze packets on an Ethernet network?
282. Which of the following desktop environments and window managers does not use GTK+?
283. What is LSB?
284. Which of the following files is used to configure filesystems shared via NFS?
285. Which of the following is not a version control system used under Linux?
286. Which of the following commands does not give useful system information?
287. What is Postfix?
288. Which of the following files is executed by bash when it is launched as a non-login shell?
289. Which of the following commands can you use to transfer files securely to and from remote systems?
290. What command can be used to forward the port 8000 on the local machine to the port 80 on a remote machine with IP 192.168.0.10?
291. A ____ is commonly packaged with a new computer system.
292. A ____ is used to refer to the user’s home directory.
293. A program’s high-level language statements are stored in a file called the ____ file.
294. Each hardware device must have its own ____ so that the operating system can detect it.
295. Errors on a filesystem are often referred to as filesystem ____ and are common on most filesystems.
296. Everything in linux is a ____________.
297. If a source file contains ____ errors, it cannot be converted into an executable file.
298. In linux, the native file system is the ____, which is installed by default.
299. In linux, the three levels of file access are ____, ____, and ____.
300. Kali is explaining her request. she is working on the ___________ of her message.
301. Linux provides the foundation for the ____ operating system.
302. Logic structures are also called ____ structures.
303. Most files on a linux system that contain configuration information are ____ files.
304. The early standard linux file system was ____.
305. You can create user accounts on the linux system by using the ____ command.
306. The ____ directory contains the kernel (operating system) images.
307. You can execute ____ main types of linux commands.
308. You can type the _____ command, with no arguments, to learn your current username and nothing more?
309. The ____ command can be used to provide a long listing for each file in a certain directory.
310. The ____ command displays the arp table and is used to modify it.
311. The ____ filesystem contains most of the operating system files.
312. The _____ command displays information about the linux kernel:
313. Solaris, hp-ux and aix are all ____ of unix.
314. The fastest method to search for files in the linux directory tree is to use the ____ command.
315. The section of an inode that stores permissions is called the ____ of the file.
316. To display the contents of a file called data, use the command ____.
317. To view a list of files and their type, use the ____ switch to the ls command.
318. In linux most system configuration files are stored in the ____ directory.
319. You can type more than one command on the command line by separating commands with a ____.
320. The root of a file system is denoted by the ____.
321. The line in the script for setting the bash shell is: ____.
322. By default, all print jobs have a priority of ____.
323. By default, pr formats the specified files into single-column pages of ____ lines.
324. The ____ function within the awk command is used to format output.
325. The unix/linux shell acts as a(n) ____ when reading script files.
326. To move from the /home/joe/test/data to the /home/joe directory, use the ____ command.
327. When you append a(n) ____ to a command, the command is run in a background process.
328. ____ is a freely available version of x windows used in many linux distributions.
329. The ____ is where directories and files are stored on a disk drive.
330. The main characteristic of ____ is that its source code is published with the software.
331. The location of users' default shells is stored in the ______ file.
332. The core component of the gui in linux is referred to as ____.
333. ____ gives the owner read, write, and execute permissions.
334. Linux is an example of a(n) ______.
335. A sorting ____ is a field position within each line.
336. To mount a drive by its ID, what command would you use first to retrieve it?
337. Linux file access control lists (ACLs) are _.
338. When using iproute2, how do you show routing information for an IPv6 network?
339. What does this command string do? find / -size +10M -exec ls -l {} ;
340. What would this locate command show? locate --regexp '^/usr.*pixmaps.*jpg$'
341. Which command allows you to do packet analysis from the command line?
342. Which command will tell you how long a system has been running?
343. How would you describe PCP (Performance Co-Pilot)?
344. You want to resolve a long list of DNS names using dig. What should you do?
345. What would this command output? ps -e --format uid,pid,ppid,%cpu,cmd
346. Which command in Bash executes the last line in the shell history that starts with ls?
347. The ssh-copy-id command copies _ to the remote host.
348. What command is used to determine the amount of disk usage for a directory?
349. A backup drive was created using dd to make a bit-for-bit copy. When the drive is inserted into an iSCSI target before it is booted up, the data appears to be missing. What happened?
350. What is the key difference between a redirect (>) and piping to the tee command?
351. What does the /etc/nsswitch.conf file manage?
352. Assume the variable myNumber holds a string consisting of 10 digits. What will this command output? echo \$myNumber | sed -e 's/^[[:digit:]][[:digit:]][[:digit:]]/(&)/g'
353. Packages can be downloaded but not installed with yum or dnf by specifying which option?
354. What character class is equal to this set? [0-9]
355. When archiving files, which command will preserve all file attributes including ACLs and SELinux security context?
356. In a systemd-based OS, you can change the system hostname by editing /etc/hostname manually and then doing what?
357. What command would you use to resize an LVM volume group to include an additional physical volume?
358. When would this system cron job run its task? 0 1 \* \* \*
359. Ifconfig has been deprecated. What command is now recommended for changing IP addresses in the live config?
360. You are managing an Apache web server on a system using SELinux. By default it cannot read personal webpages in users' home directories. What SELinux boolean would you set to allow this?
361. Why doesn't passwd -l keep a user from logging in via other methods?
362. In the Bash shell, what is the difference between piping into | and piping into |&?
363. Why is the passwd command able to modify the /etc/passwd file?
364. When a user deletes a file using the rm command, Linux will _.
365. What is a major advantage of using Logical Volume Management (LVM)?
366. What is one major difference between brace expansion and globs?
367. To remove all ACLs from a directory , use setfacl with which options?
368. What is not inherited by child process?
369. What NFS option allows the root user to access NFS shares as the root user?
370. You send an email to a remote client using the following syntax. What will be in the body of the email?
371. What is the /etc/hosts file used for?
372. In an extended regular expression, you would use (pattern){3} to match three instances of the pattern. How would you match the same thing with an extended glob?
373. When configuring a Samba share, how would the engineering group be specified in the smb.conf?
374. To configure the Kerberos client, which command should you use to import the keytab file?
375. To search from the current cursor position up to the beginning of the file using VIM, type _ and then the search criteria.
376. What is the job of the NetworkManager daemon?
377. Why might would you use the usermod command ?
378. Extending an LVM volume group does what to the formatted filesystem?
379. What would this sed command do? sed -E 's/[a-Z]{4}/(&)/' textfile.txt
380. Which kernel module do you need to load to use interface bonding?
381. What does this command string do? find / -size -10K -exec ls -l {} \;
382. To change the priority of multiple swap partitions, which file would you edit?
383. What would you type to list all systemd service unit files, whether they are enabled or not?
384. You can set Linux group passwords using which command?
385. With most GNU commands, if an option is a word, what will it be preceded by?
386. What would happen if you have a script file named script that takes a long time to complete, and you type nohup ./script & in the command line?
387. To elevate privileges using the sudo command, a user must _.
388. When would this system cron job run its task? 0 22 * * 1-5
389. How does TCP Wrappers differ from a firewall?
390. As root, you set execute permissions for user, group, and other on a directory. Now users can do what?
391. What will this command print? echo "Thu Jun 4 15:45:45 PDT 2020" | cut -f3 -d" "
392. Using a systemd-based distribution, you want to restrict the cron service from running either automatically or manually. Which command would you run?
393. What issue might a user have when they mount a filesystem by partition path such as /dev/sdal in the /etc/fstab file?
394. Which option would you choose to force grep to use a basic regular expression (BRE)?
395. An rsyslogd filter determines which items in a log file to act on. What is it made up of?
396. Which choice is a Network Manager tool used to configure network connections from the GUI?
397. What will not happen if you run the make command without parameters?
398. Most commands that support SELinux use which option to display SELinux security context?
399. What is the difference between the whoami and logname commands?
400. What is the command to create an associative array in Bash?
401. What tool Should you use to replace a physical volum in LVM?
402. What is the difference the == and =~ comparison operators when used in BASH double square bracket if conditionals?
403. What is the difference between these two lines of code? echo "data" | tee -a file.txt echo "data" >> file.txt
404. Using backreferences in a POSIX regular expression, which word would this pattern match? (ss).*\1
405. To run CGI scripts with Apache, you need to _.
406. To permanently add NAT to the default zone using firewalld, you would use which command string?
407. What is the difference between using = and == in a BASH double square bracket if conditional? n (==) checks equality.
408. Journald differs from traditional logging services such as rsyslogd and syslogd because its logs are _ by default.
409. What is the purpose of a Mail Transport Agent (MTA)?
410. What do you need to do before you can perform SSH passwordless logins?
411. When installing a downloaded package on the RedHat-based distribution manual using RPM, what may you have to do first?
412. With GNU tools such as a GNU grep, awk, and sed, what is the difference between basic regular expressions (BREs) and extended regular expressions (EREs)?
413. What is the difference between reading the list of disk partitions from /proc/partitions and getting it using fdisk -l?
414. What would be in out.txt?
415. Using alternation in a POSIX-extended regular expression, which numbers would this pattern match? ^(([0-9][0-9]?)|(2[0-9][0-9]))$
416. Typing systemctl enable crond does what to the crond service?
417. Which of these features is missing from the Bash Language?
418. What is the first step to integrate extended globs into your command-line workflow?
419. Which statement about default ACLs is true?
420. The object that systemd uses to manage services is called a _ file.
421. What is the difference between the apt remove and apt autoremove commands?What is the difference between the apt remove and apt autoremove commands?
422. You want to extract the contents from an rpm package. Which command do you use?You want to extract the contents from an rpm package. Which command do you use?
423. The ____ command prints a listing of environment and configuration variables.
424. When you start vim, you are in ____ mode automatically.
425. After performing a search, you can use the ____ key to return to a previously found match:
426. Stephen bourne at at&t bell labs developed the ____ shell as the first unix command processor.
427. The ____ is the prompt symbol traditionally associated with ordinary users.
428. The ____ metacharacter indicates background command execution.
429. The ______________ command can be used to see network interfaces.
430. The bind documentation consist of ____ chapters.
431. To search all man pages? name sections for the keyword less, you would type ______________ less.
432. You can redirect a file to the standard input of a command using the ____ metacharacter.
433. The _______ command will print a list of the commands that you've previously executed.
434. To send a print job to a printer, you must first use the ____ command and specify what to print.
435. Unix and linux are operating systems designed to run on ________.
436. When using the chmod command, the mode rwx can be represented by the number ____.
437. ____ components define the file system on unix/linux.
438. ____________ is a script or a tool that obtains privileges of a root?
439. Every computer contains a(n) ____ to send and receive data from other computers over a network.
440. To create or edit a user cron table, you can use the ____ option to the crontab command.
441. To define an additional field in datasheet view, tap or click the ____ column heading.
442. To lock an account, you can use the usermod command with the ____ option.