LFCS : Linux Foundation Certified System Administrator : Part 08
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Which file should be edited to select the network locations from which Debian installation package files are loaded?
- /etc/dpkg/dpkg.cfg
- /etc/apt/apt.conf
- /etc/apt/apt.conf.d
- /etc/apt/sources.list
- /etc/dpkg/dselect.cfg
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SIMULATION
Which option to the yum command will update the entire system? (Specify ONLY the option name without any additional parameters.)- update
- upgrade
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In Bash, inserting 1>&2 after a command redirects
- standard error to standard input.
- standard input to standard error.
- standard output to standard error.
- standard error to standard output.
- standard output to standard input.
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What command will generate a list of user names from /etc/passwd along with their login shell?
- column -s : 1,7 /etc/passwd
- chop -c 1,7 /etc/passwd
- colrm 1,7 /etc/passwd
- cut -d: -f1,7 /etc/passwd
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Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?
- dd if=/dev/zero of=/dev/sda bs=512
- dd if=/dev/zero of=/dev/sda bs=512 count=1
- dd if=/dev/zero of=/dev/sda bs=440 count=1
- dd if=/dev/zero of=/dev/sda bs=440
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Which of the following commands can be used to create a USB storage media from a disk image?
- gdisk
- dd
- cc
- fdisk
- mount
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What is the effect of the egrep command when the -v option is used?
- It enables color to highlight matching parts.
- It only outputs non-matching lines.
- It shows the command’s version information.
- It changes the output order showing the last matching line first.
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What does the symbol within regular expressions represent?
- Match the preceding qualifier one or more times.
- Match the preceding qualifier zero or more times.
- Match the preceding qualifier zero or one times.
- Match a literal character.
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SIMULATION
Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)- jobs
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Which of the following commands moves and resumes in the background the last stopped shell job?
- run
- bg
- fg
- back
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SIMULATION
Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.)- HISTFILE
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Which of the following commands displays the contents of a gzip compressed tar archive?
- gzip archive.tgz | tar xvf –
- tar ztf archive.tgz
- gzip -d archive.tgz | tar tvf –
- tar cf archive.tgz
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In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?
- By using the command :repeat followed by the number and the command.
- By specifying the number right in front of a command such as 4l or 2yj.
- By selecting all affected lines using the shift and cursor keys before applying the command.
- By issuing a command such as :set repetition=4 which repeats every subsequent command 4 times.
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Which of the following files, located in the user home directory, is used to store the Bash history?
- .bash_history
- .bash_histfile
- .history
- .bashrc_history
- .history_bash
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What is the output of the following command?
echo “Hello World” | tr -d aieou
- Hello World
- eoo
- Hll Wrld
- eoo Hll Wrld
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Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?
- <<
- <|
- !<
- &<
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Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?
- cat < myapp | cat > file1.log
- myapp 0>&1 | cat > file1.log
- myapp | cat > file1.log
- myapp | tee file1.log
- tee myapp file1.log
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What is the purpose of the Bash built-in export command?
- It allows disks to be mounted remotely.
- It runs a command as a process in a subshell.
- It makes the command history available to subshells.
- It sets up environment variables for applications.
- It shares NFS partitions for use by other systems on the network.
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What is the default action of the split command on an input file?
- It will break the file into new files of 1,024 byte pieces each.
- It will break the file into new files of 1,000 line pieces each.
- It will break the file into new files of 1,024 kilobyte pieces each.
- It will break the file into new files that are no more than 5% of the size of the original file.
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What is the difference between the i and a commands of the vi editor?
- i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically.
- i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.
- i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line.
- i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing.
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