Linux-and-Bash-for-Data-Engineering Quizzes & respostas – Coursera

Diving into the world of data engineering requires a solid understanding of the foundational tools that drive analysis and insight. Linux e Bash scripting stand out as pivotal skills for managing data workflows and automating tasks.

Our latest blog post offers an in-depth look at Coursera’s questionários e respostas para o ‘Linux-e-Bash-para-Dados–Engenharia‘ curso, providing readers with a practical guide to mastering these essential tools. Stay tuned as we unravel the quizzes and their solutions to bolster your data engineering expertise.

• A type of hardware.
• A kernel.
• A free and open source operating system inspired by UNIX.

• A cloud-based shell is similar or identical to the deployment environment in that cloud.
• They always run a proprietary UNIX which is helpful for building cloud solutions.
• The cloud-shell runs on your laptop and can take advantage of power of your local machine.

• It maintains the software development with the latest tools for you.
• It is always faster.
• It is free.

• To perform complex operations on data.
• Writing a web service.
• Writing a mobile application.

• A file.
• A shell pipeline cannot output.
• The windows operating system.

• o > operator directs the output of a command to a file. o | operator directs the output of a command to another command.
• o | operator directs the output of a command to a file. o > operator directs the output of a command to another command.
• Both operators do the same thing, which is direct output to a file.

• The Git server must have a copy of ~/.ssh/id_rsa from the client checking out the repository.
• You do not need to copy files to a server to use SSH-based checkout.
• The Git server must have a copy of ~/.ssh/id_pub from the client checking out the repository.

• Developing locally from a server running remotely.
• Doing unencrypted communication on a local network.
• Creating a public chat server that doesn’t require authentication.

• rsync
• mv
• rmdir

• By use of the ~/.ssh/config file.
• By use of the ~/.zshrc file.
• By use of the ~/.bashrc file.

 

• It is a Bash login shell that only runs at the start of a new login shell.
• It is a Bash logout shell that only runs when a shell exits.
• It is a Bash shell script that runs whenever Bash is started interactively.

• It is a ZSH login shell that only runs at the start of a new login shell.
• It is a ZSH logout shell that only runs when a shell exits.
• It is a ZSH shell script that runs whenever Bash is started interactively.

• FRUIT=”cereja”
• echo $FRUIT
• export FRUIT=”cereja”

• Cherries are tasty
• echo Cherries are tasty
• $FRUIT are tasty

• It will display the help menu for a command.
• You will see output like the following:

• alias egrep=’egrep –color=auto’
• alias fgrep=’fgrep –color=auto’
• alias grep=’grep –color=auto’
• alias l.=’ls -d .* –color=auto’
• alias ll=’ls -l –color=auto’
• alias ls=’ls –color=auto’
• alias which=’alias | /usr/bin/which –tty-only –read-alias –show-dot –show-tilde’

– [ ] It will print the name of the shell currently in use.

• It is always blank.
• Errors from the improper execution of a shell command.
• The content of a file.

• It will create the file since it doesn’t exist.
• It will display the following error. eu: cannot access fakefile: No such file or directory
• There is no output.

• It deletes the output of stderr
• Write stderr to error.txt
• Write stdout to error.txt

• It appends 10 random numbers to a file.
• It overwrites a file with a new random number 10 vezes.
• It throws away the output of standard out.

• The sort command is appending to the /etc/password file.
• The /etc/password file is reverse sorted.
• The /etc/password file is overwritten with a sorted version

 

• A for loop.
• Making a script.
• Creating a variable.

• An error prints to stdout.
• Nothing prints out.
• a palavra “Oi” prints to stdout.

• An error prints to stdout.
• a palavra “Oi” prints to stdout.
• Nothing prints out.

• To remove null values.
• It improves the accuracy of a prediction.
• To convert the data to a small data problem.

• Nenhuma coisa.

• olá

• olá

  mundo

• They are both the same command.
• The locate command uses metadata to search the filesystem.
• The find command uses metadata to search the filesystem.

• Find all directories in the search path
• Find all executable non-invisible files.
• Find all files with the word x in them.

• maçã

  pêssego

• pear

• maçã

  pear

  pêssego

• They want to truncate a file and grab the first 10000 linhas.
• They want to randomly sample 10000 rows of a file.
• They want to truncate a file and grab the last10000 rows.

• It sleeps for 2 seconds then quits with no output.
• It prints out “bob is your uncle” todo 2 segundos.
• It prints out “bob is your uncle” twice then stops.

 

• Find only occurrences of .ZSHRC
• Find only occurrences of .zshrc
• Find occurrences of both .ZSHRC and .zshrc

• They are both the same speed to execute.
• The first command.
• The second time command using locate.

• mv
• cp
• tocar

• chmod 754 foo.txt
• touchchown root:raiz
• touchchmod -R 777 *

• Nenhuma coisa
• It creates a zip archive of the foo directory in the location archives/foo.zip
• It unzips archives/foo.zip

• It creates an uncompressed archive.
• It creates an archive of the foo directory.
• Nenhuma coisa.

• less -r foo.txt
• sort -r < foo.txt
• rev < foo.txt

• sort fruit.txt
• uniq -c fruit.txt
• sort fruit.txt | uniq -c

• 415-444-5599
• 41-444-5599
• Nenhuma coisa.

• POSITIVE
• NEGATIVE
• MIXED