Linux Essentials 1

What are the differences between hard disk drives and solid state disks? (Choose two)

Which of the following commands shows the absolute path to the current working directory?

Most commands on Linux can display information on their usage. How can this information typically be displayed?

FILL BLANK

What parameter of ls prints a recursive listining of a directory’s content? (Specify ONLY the option name without any values or parameters.)

What is true about the su command?

Which of the following commands creates the ZIP archive poems.zip containing all files in the current directory whose names end in .txt?

The file script.sh in the current directory contains the following content:
#!/bin/bash echo $MYVAR
The following commands are used to execute this script:
MYVAR=value
./script.sh
The result is an empty line instead of the content of the variable MYVAR. How should MYVAR be set in order to make script.sh display the content of MYVAR?

Which of the following is TRUE about open source software?

What does GUI stand for?

The output of the program date should be saved in the variable datenow. What is the correct statement to enter into the shell to set this variable?

Which of the following is NOT a valid rule for naming a variable?

What could provide a set of electronic pages that explains a specific command available on the system?

How can the current directory and its subdirectories be searched for the file named MyFile.xml?

The «cd» command is short for _____________.

Which command is used to copy files from one directory to another?

What does the «rm -rf» command do in Linux?

Which of the following commands will create an archive file, named backup.tar, containing all the files from the directory /home?

Which of the following commands creates an archive file work.tar from the contents of the directory ./work/?

How can the normal output of a command be written to a file while discarding the error output?

Which command will display the last line of the file document.txt?

What is the output of the following command?
for token in a b c; do
echo -n ${token};
done

Which of the following statements may be used to access the second command line argument to a script?

What keyword should be used to fill in the blank in the following segment of
the given shell script?
for i in *; _____
cat $i
done

How is it possible to determine if an executable file is a shell script which is read by Bash?

After installing a new package, in which directory are you most likely find its configuration file?

Which of the following directories is often used to store log files?

What is the command that will show system boot time messages?

Which network interface always exists in a Linux system?

Which of the following displays network connections for Transmission Control Protocol, routing tables, and a number of network interface and network protocol statistics?

Which of the following commands can determine the time of the last login of a given user?

Which command shows who is logged on and what they are doing in the system?

Which of the following files holds the definition of the local user accounts?

Which command adds the new user tux and creates the user’s home directory with default configuration files?

Which of the following commands will display a list of all files in the current directory, including those that may be hidden?

What does the letter t at the end of drwxrwxrwt indicate within the following directory permissions?
drwxrwxrwt 14 root root 36864 2012-03-02 11:17 /tmp

What command would you use to create a symbolic link in Linux?