R Programming Fundamentals Quiz

R Programming

• The c() function is used to combine multiple elements into a vector.
• The seq() function creates a sequence of numbers.
• The read.csv() function is used to read a CSV file into R.
• The install.packages() function is used to install packages in R.
• The str() function returns the structure of an object.
• The data.frame() function is used to create a data frame in R.
• The mean(x, na.rm=TRUE) function calculates the mean of x ignoring NA values.
• The class() function is used to check the type of a variable in R.
• The rbind() function is used to combine data frames by rows.
• The rm() function is used to remove a variable from the workspace in R.

Linux

• The ls -al command lists all files, including hidden ones, in a directory.
• The chmod command is used to change the permissions of a file.
• The cat command is used to display the contents of a file.
• The grep command is used to find patterns in files.
• The pwd command is used to check the current directory you are in.
• The mv command is used to move or rename a file.
• The mkdir command is used to create a new directory in Linux.
• The man command is used to find the manual page for a specific command in Linux.
• The ps command is used to list all processes currently running.

Git

• The git init command is used to initialize a new Git repository.
• The git clone url command is used to clone a repository from GitHub.
• The git add command stages changes for the next commit.
• The git log command is used to view the commit history in Git.
• The git branch new_branch command creates a new branch in Git.
• The git pull command fetches and merges changes from the remote repository to the local repository.
• The git rm command permanently deletes a file from the Git repository and the filesystem.
• The git diff command is used to see the differences between the working directory and the staging area in Git.
• The git reset --soft HEAD~1 command undoes the last commit while keeping the changes in the working directory.
• The git tag command is used to create a tag in Git.

Test your knowledge of basic R programming concepts, including vector operations, sequence generation, and file input/output. Assess your understanding of R functions such as c(), seq(), and read.csv().