010-160 LPI LINUX ESSENTIALS UPDATED QUESTIONS
AND VERIFIED ANSWERS
whereis - CORRECT ANSWER✅✅✅used to search for programs in restricted locations, such as binary
file directories, libraries, and man directories.
locate - CORRECT ANSWER✅✅✅Searches the system managed database of filenames for files
containing the specified string in the filenames. (Search is much faster than the search performed using
the 'find' command)
updatedb - CORRECT ANSWER✅✅✅Updates the system managed database of filenames
Displays current working directory - CORRECT ANSWER✅✅✅pwd
Change into the current user's home directory - CORRECT ANSWER✅✅✅cd ~
cd $HOME
Both of these do what
Change to the parent directory of the current directory - CORRECT ANSWER✅✅✅cd ..
Change to the etc directory in the root (/) directory - CORRECT ANSWER✅✅✅cd /etc
Creates a hard link named 'format.txt' for the file 'fmt.txt' - CORRECT ANSWER✅✅✅ln fmt.txt
format.txt
Creates a symbolic link named sym.txt of fmt.txt - CORRECT ANSWER✅✅✅ln -s fmt.txt sym.txt
, touch - CORRECT ANSWER✅✅✅Can be used to update the timestamp of a file or if that file doesn't
exist it will create a blank file with the specified name.
Will update the timestamp of the specified file if it exists. If it does not exist it will not create a blank file.
- CORRECT ANSWER✅✅✅touch -c file1.txt
Adds the content "Hey there!" to the specified file. - CORRECT ANSWER✅✅✅echo "Hey there!" >
sample.txt
cat filename.txt - CORRECT ANSWER✅✅✅Displays the contents of a file
Opens the vi editor for the file "sample". This will allow you to write text into a file. - CORRECT
ANSWER✅✅✅vi sample
Will display the "sample" file's byte count - CORRECT ANSWER✅✅✅wc -c sample
Displays the number of characters in the "sample" file - CORRECT ANSWER✅✅✅wc -m sample
Display the number of lines in the "sample" file - CORRECT ANSWER✅✅✅wc -l sample
Display the word count of the "sample" file - CORRECT ANSWER✅✅✅wc -w sample
Extracts the first field of the "/etc/passwd" file - CORRECT ANSWER✅✅✅cut -f 1 /etc/passwd
Extract the first three characters from the "/etc/passwd" file - CORRECT ANSWER✅✅✅cut -c 1, 2, 3
/etc/passwd
Extracts the third field from the "/etc/shadow" file and uses the : seperator. Since "/etc/shadow" is a :
(colon) seperated file, this command will display only the content of the third field in the file. - CORRECT
ANSWER✅✅✅cut -d ":" -f 3 /etc/shadow
AND VERIFIED ANSWERS
whereis - CORRECT ANSWER✅✅✅used to search for programs in restricted locations, such as binary
file directories, libraries, and man directories.
locate - CORRECT ANSWER✅✅✅Searches the system managed database of filenames for files
containing the specified string in the filenames. (Search is much faster than the search performed using
the 'find' command)
updatedb - CORRECT ANSWER✅✅✅Updates the system managed database of filenames
Displays current working directory - CORRECT ANSWER✅✅✅pwd
Change into the current user's home directory - CORRECT ANSWER✅✅✅cd ~
cd $HOME
Both of these do what
Change to the parent directory of the current directory - CORRECT ANSWER✅✅✅cd ..
Change to the etc directory in the root (/) directory - CORRECT ANSWER✅✅✅cd /etc
Creates a hard link named 'format.txt' for the file 'fmt.txt' - CORRECT ANSWER✅✅✅ln fmt.txt
format.txt
Creates a symbolic link named sym.txt of fmt.txt - CORRECT ANSWER✅✅✅ln -s fmt.txt sym.txt
, touch - CORRECT ANSWER✅✅✅Can be used to update the timestamp of a file or if that file doesn't
exist it will create a blank file with the specified name.
Will update the timestamp of the specified file if it exists. If it does not exist it will not create a blank file.
- CORRECT ANSWER✅✅✅touch -c file1.txt
Adds the content "Hey there!" to the specified file. - CORRECT ANSWER✅✅✅echo "Hey there!" >
sample.txt
cat filename.txt - CORRECT ANSWER✅✅✅Displays the contents of a file
Opens the vi editor for the file "sample". This will allow you to write text into a file. - CORRECT
ANSWER✅✅✅vi sample
Will display the "sample" file's byte count - CORRECT ANSWER✅✅✅wc -c sample
Displays the number of characters in the "sample" file - CORRECT ANSWER✅✅✅wc -m sample
Display the number of lines in the "sample" file - CORRECT ANSWER✅✅✅wc -l sample
Display the word count of the "sample" file - CORRECT ANSWER✅✅✅wc -w sample
Extracts the first field of the "/etc/passwd" file - CORRECT ANSWER✅✅✅cut -f 1 /etc/passwd
Extract the first three characters from the "/etc/passwd" file - CORRECT ANSWER✅✅✅cut -c 1, 2, 3
/etc/passwd
Extracts the third field from the "/etc/shadow" file and uses the : seperator. Since "/etc/shadow" is a :
(colon) seperated file, this command will display only the content of the third field in the file. - CORRECT
ANSWER✅✅✅cut -d ":" -f 3 /etc/shadow
