\chapter{Linux Commands}
\ChapterLabel{LinuxCommands}

\begin{figure}[htbp]
    \centering
    \includegraphics[width=1\textwidth]{terminal.png}
    \caption{Linux terminal screenshot of the bash commands ran in Step 2.}
    \label{fig:linux_terminal}
\end{figure}

\section{Navigation and File Ops}


1. paris@paris-Precision-3581:~/lx-test 

\begin{figure}
    \centering
    \includegraphics[width=1\linewidth]{linux/image0.png}
    \caption{All entries in ~/lx-test.}
    \label{fig:img2}
\end{figure}

\begin{figure}
    \centering
    \includegraphics[width=1\linewidth]{linux/image1.png}
    \caption{Copying txt to tmp.}
    \label{fig:img3}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image2.png}
    \caption{old.txt moved into archive/.}
    \label{fig:img4}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image3.png}
    \caption{New empty file notes.md created.}
    \label{fig:img5}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image4.png}
    \caption{Disk usage for the src directory.}
    \label{fig:img6}
\end{figure}

\newpage
\section{Viewing and Searching}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image6.png}
    \caption{Line numbers printed in sys.log.}
    \label{fig:img7}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image7.png}
    \caption{sys.log lines filtered by ERROR.}
    \label{fig:img8}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image8.png}
    \caption{Distinctive words in words.txt counted.}
    \label{fig:img9}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image9.png}
    \caption{Lines starting with G in words.txt shown.}
    \label{fig:img10}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image10.png}
    \caption{First two lines of people.csv displayed.}
    \label{fig:img11}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image11.png}
    \caption{Last three lines of sys.log shown.}
    \label{fig:img12}
\end{figure}

\newpage
\section{Text Processing}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image12.png}
    \caption{Name column of people.csv printed.}
    \label{fig:img13}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image13.png}
    \caption{words.txt sorted case-insensitively without duplicates.}
    \label{fig:img14}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image14.png}
    \label{fig:img15}
\end{figure}
\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/imaging.png}
    \caption{"three" replaced with 3 in src.txt with backups.}
    \label{fig:placeholder}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image15.png}
    \caption{Lines, words, and bytes printed for every *.txt file in src.}
    \label{fig:img16}
\end{figure}

\newpage
\section{Permissions and Ownership}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image16.png}
    \caption{tmp/ made only read/write/searchable by the owner.}
    \label{fig:img17}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image17.png}
    \caption{src/lib given group execute permission recursively.}
    \label{fig:img18}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image18.png}
    \caption{Numeric permissions of src/file2.txt shown.}
    \label{fig:img19}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image19.png}
    \caption{notes.md made append-nly for the owner.}
    \label{fig:img20}
\end{figure}

\newpage
\section{Links and Find}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image20.png}
    \caption{link-to-file1's target path.}
    \label{fig:img21}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image21.png}
    \caption{All regular files over 40 KiB under the current tree.}
    \label{fig:img22}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image22.png}
    \caption{Files modified in the last 10 minutes under tmp/.}
    \label{fig:img23}
\end{figure}

\newpage
\section{Processes and Job Control}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image23.png}
    \label{fig:img24}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=1\linewidth]{linux/imagest.png}
    \label{fig:placeholder}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=1\linewidth]{linux/imageringest.png}
    \caption{Processes shown in tree view.}
    \label{fig:placeholder}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image24.png}
    \caption{sleep 120 started and its PID.}
    \label{fig:img25}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image25.png}
    \caption{TERM signal sent to all sleep processes.}
    \label{fig:img26}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image26.png}
    \caption{Top 5 processes by memory usage shown.}
    \label{fig:img27}
\end{figure}

\newpage
\section{Archiving and Compression}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image27.png}
    \caption{src.tgz created from src/.}
    \label{fig:img28}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image28.png}
    \caption{Contents of src.tgz listed.}
    \label{fig:img29}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image29.png}
    \caption{file2.txt extracted from src.tgz into tmp/.}
    \label{fig:img30}
\end{figure}

\newpage
\section{Networking and System Info}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image30.png}
    \caption{All listening TCP sockets with PIDs shown.}
    \label{fig:img31}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image31.png}
    \caption{Default route concisely printed.}
    \label{fig:img32}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image32.png}
    \caption{Kernel name, release, and machine architecture displayed.}
    \label{fig:img33}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image33.png}
    \caption{Last five successful logins shown.}
    \label{fig:img34}
\end{figure}

\newpage
\section{Package and Services (Ubuntu)}


\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image34.png}
    \caption{Installed version of the coreutils package shown.}
    \label{fig:img35}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image35.png}
    \caption{Available packages with names containing "ripgrep".}
    \label{fig:img36}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image36.png}
    \caption{Status line of cron service.}
    \label{fig:img37}
\end{figure}

\newpage
\section{Bash and Scripting}

\begin{figure}[hbt!]
    \centering
    \includegraphics[width=1\linewidth]{linux/image39.png}
    \caption{Variable X with value 42 created, printed, and deleted.}
    \label{fig:img40}
\end{figure}