diff --git a/backmatter/devopsAIPromptLog.tex b/backmatter/devopsAIPromptLog.tex
index 4644b11..7d47b08 100644
--- a/backmatter/devopsAIPromptLog.tex
+++ b/backmatter/devopsAIPromptLog.tex
@@ -46,4 +46,17 @@ split of accounts into generated and derived classes.\\
 \textbf{Human review and corrections:} The author determined the column policy
 and work-in-progress criteria, and rejected a proposal to create a GitHub
 organization as premature while teams remain unformalized. Much of the assistant's
-wording, structure, and ambitious ideas were rejected for overcomplication.
\ No newline at end of file
+wording, structure, and ambitious ideas were rejected for overcomplication.
+
+\subsection{Record 3 --- Linux Commands}
+\textbf{Date:} September 26, 2026.\\
+\textbf{Tool and model:} Anthropic Claude (Opus 5).\\
+\textbf{Task}: Draft a template for \ChapterRef{LinuxCommands} with appropriate formatting
+for terminal inputs and outputs, and a structure for the problem set solutions. Revise
+the entire document to reflect the new chapter and team formation.\\
+\textbf{Inputs:} The document template and the Linux problem set.\\
+\textbf{Output used:} A skeleton of the chapter with its sections, setup figure, and
+the problem set headings for each question. Suggested edits to the metadata, abstract, and
+introduction for Assignment~2 and the two-person team.\\
+\textbf{Human review and corrections:} The authors refined the chapter structure to accommodate
+rubric requirements and experimented with different figure formatting for terminal inputs and outputs.
\ No newline at end of file
diff --git a/backmatter/glossary.tex b/backmatter/glossary.tex
index a3aef64..6f5d73d 100644
--- a/backmatter/glossary.tex
+++ b/backmatter/glossary.tex
@@ -4,6 +4,7 @@
 \newacronym{mfa}{MFA}{multi-factor authentication}
 \newacronym{ssh}{SSH}{secure shell}
 \newacronym{wip}{WIP}{work in progress}
+\newacronym{wsl}{WSL}{Windows Subsystem for Linux}
 \newglossaryentry{evidence}{name={evidence},description={A retained record of an
   actual execution, observation, or review}}
 \newglossaryentry{host}{name={host},description={A named machine in the
diff --git a/chapters/devopsHosts.tex b/chapters/devopsHosts.tex
index cefa4b4..2c57e13 100644
--- a/chapters/devopsHosts.tex
+++ b/chapters/devopsHosts.tex
@@ -50,8 +50,8 @@ rules govern access to the Linux hosts once they are provisioned.
 \item Interactive access is by \gls{ssh} public key only.
       Password authentication is disabled in the server configuration.
       The local account password recorded in \ChapterRef{Passwords} authenticates \texttt{sudo} only.
-\item Inbound \gls{ssh} is restricted by source address to the workstation
-      listed above rather than opened to the public Internet.
+\item Inbound \gls{ssh} is restricted by source address to the local workstation
+	  rather than opened to the public Internet.
 \item Day-to-day work is performed by an unprivileged account. Administrative
       rights are granted per command rather than by general membership in the
       \texttt{sudo} group.
diff --git a/chapters/devopsIntroduction.tex b/chapters/devopsIntroduction.tex
index a64eecf..fe4cb4d 100644
--- a/chapters/devopsIntroduction.tex
+++ b/chapters/devopsIntroduction.tex
@@ -7,15 +7,10 @@
 
 \section{Purpose}
 This document records the configuration of the development environment used for
-\CourseNumber\ and the working practices followed to produce it. For
-Assignment~\AssignmentNumber\ it covers three subjects: the \gls{kanban} that
-plans and tracks the assignment work, the hosts the environment will comprise,
-and the passwords that will govern accounts on those hosts.
-
-It is a working record rather than a one-time report. Each subsequent
-assignment extends it, and the document history records what changed and when,
-so that the state of the environment at any point in the term can be recovered
-from this document alone.
+\CourseNumber\ and the working practices followed to produce it.
+Each chapter covers one subject, and each assignment adds or revises chapters
+as recorded in the document history. The latest revision for Assignment~\AssignmentNumber\
+adds \ChapterRef{LinuxCommands}.
 
 \section{Scope and Constraints}
 \index{scope!constraints}
@@ -23,15 +18,15 @@ The following constraints apply to this revision.
 
 \begin{itemize}[leftmargin=*]
 \item The environment is \emph{specified} here, not provisioned. The hosts
-      chapter names the machines to be configured and their intended roles; it
-      does not claim that any host exists, and it therefore presents no
-      execution \gls{evidence}.
+      chapter names the machines to be configured and their intended roles.
+\item Command-line work was performed on a local workstation running
+      Ubuntu~24.04 under the \gls{wsl}, not on a course
+      host. Terminal listings are copied from actual executions.
 \item No credential, access token, private key, or account secret appears in
       this document. Password rules are documented by derivation hint only, as
       described in \ChapterRef{Passwords}.
-\item This is an individual submission. Teams have not yet been formalized, so
-      the board described in \ChapterRef{KanbanSetup} is operated by a single
-      person and every card is assigned to the author.
+\item This is a group submission. Chapters written before teams were formed
+	  were prepared individually and are identified as such in the document history.
 \item The document is authored in \LaTeX\ and compiled with pdf\LaTeX\ on
       Overleaf. The board is hosted in GitHub Projects. The planned environment
       targets Amazon EC2.
@@ -42,18 +37,20 @@ The following constraints apply to this revision.
 \toprule \textbf{Item} & \textbf{Expectation}\\ \midrule
 Due date & \DueDate\\
 Instructor & \Instructor\\
+Team & \Author\\
 Board & GitHub Projects, \texttt{SSW 590} (private; captured as figures in \ChapterRef{KanbanSetup})\\
-Required deliverables & Compiled document; Kanban Setup, Passwords, and Hosts chapters; updated document history\\
-Team policy & Individual submission pending team formalization\\ \bottomrule
+Required deliverables & Compiled document; Linux Commands chapter; updated document history\\
+Team policy & Group submission\\ \bottomrule
 \end{tabularx}
 
 \section{Document Organization}
 \index{document organization}
 \ChapterRef{KanbanSetup} describes the tool selected for the board, the steps
-taken to configure it, the policy governing each column, and the inventory of
-cards. \ChapterRef{Hosts} names the hosts to be configured and
-their roles. \ChapterRef{Passwords} defines the account and password rules for those hosts. \ChapterRef{AIPromptLog} records AI assistance used in preparing
-this document.
+taken to configure it, the policy governing each column, and the inventory of cards.
+\ChapterRef{Hosts} names the hosts to be configured and their roles.
+\ChapterRef{Passwords} defines the account and password rules for those hosts.
+\ChapterRef{LinuxCommands} records the Linux working-directory setup and the problem-set solutions.
+\ChapterRef{AIPromptLog} records AI assistance used in preparing this document.
 
 This document is derived from the \CourseNumber\ assignment template credited on
 the Template Attribution page. The template's instructional example chapter and
diff --git a/chapters/devopsLinuxCommands.tex b/chapters/devopsLinuxCommands.tex
new file mode 100644
index 0000000..cbaea1f
--- /dev/null
+++ b/chapters/devopsLinuxCommands.tex
@@ -0,0 +1,359 @@
+\chapter{Linux Commands}
+\ChapterLabel{LinuxCommands}
+\index{Linux}
+\index{Linux!command line}
+\index{Linux!working directory}
+\index{bash}
+\index{symbolic link}
+\index{file timestamps}
+
+\section{Purpose}
+This chapter records a set of Linux shell commands run in the authors' working
+user directories, and the solutions to the accompanying problem set.
+Terminal input and output are copied directly from the shell, so each listing is
+a record of an actual execution and serves as \gls{evidence} for this chapter.
+
+\section{Environment}
+\index{Linux!environment}
+The commands were run as the unprivileged user \texttt{payton} on Ubuntu~24.04
+under the \gls{wsl} on the author's workstation, in a \texttt{bash} shell.
+
+\section{Working Directory Setup}
+\index{Linux!working directory setup}
+Figure~\ref{Figure:LxTestSetup} shows the executed setup commands in the order given by
+the assignment. Figure~{\ref{Figure:LxTestDirectories}} shows the resulting directory structure,
+and Figure~{\ref{Figure:LxTestFiles}} shows the resulting file contents.
+
+\subsection{What the Commands Do}
+\index{Linux!command explanations}
+\begin{sloppypar}
+\begin{itemize}[leftmargin=*]
+\item \texttt{mkdir -p \textasciitilde/lx-test \&\& cd \textasciitilde/lx-test}
+      creates the directory, along with any missing parent directories, and does
+      not fail if it already exists. The \texttt{\&\&} operator runs \texttt{cd}
+      only if \texttt{mkdir} succeeds.
+\item \texttt{printf "\ldots" > \textit{file}} writes the string to a file,
+      turning each \texttt{\textbackslash n} into a newline. The \texttt{>}
+      redirection creates the file or overwrites it if it already exists.
+      \texttt{printf} is used instead of \texttt{echo} because it handles escape
+      sequences the same way in every shell.
+\item \texttt{dd} with \texttt{if=/dev/zero}, \texttt{of=blob.bin},
+      \texttt{bs=1K}, and \texttt{count=48} copies $48$ blocks of
+      $1\,\mathrm{KiB}$ from \texttt{/dev/zero}, producing a file of
+      $48 \times 1024 = 49152$ zero bytes.
+\item \texttt{mkdir -p src/lib tmp archive} creates three directories in one
+      command; \texttt{-p} creates \texttt{src} as the parent of \texttt{lib}.
+\item \texttt{ln -s src/file1.txt link-to-file1} creates a symbolic link. The
+      stored target is the relative path \texttt{src/file1.txt}, which is
+      resolved relative to the directory that contains the link.
+\item \texttt{touch -t 202401020304 old.txt} creates \texttt{old.txt} with a
+      modification time of 2024-01-02 03:04 in local time.
+\item \texttt{ls -lA} lists each named directory in long format, including
+      hidden entries but omitting \texttt{.} and \texttt{..}.
+      \texttt{head} prints the first ten lines of each file under a
+      file name header; every file here is shorter than ten
+      lines, so each is shown in full.
+\end{itemize}
+\end{sloppypar}
+
+\subsection{Interpretation of Results}
+\index{Linux!result interpretation}
+Figure~\ref{Figure:LxTestDirectories} confirms each step of the setup:
+\begin{itemize}[leftmargin=*]
+\item \textbf{File sizes:} \texttt{blob.bin} is $49152$ bytes, as computed
+      above. Each text file's size equals its characters plus one byte per newline.
+\item \textbf{Symbolic link:} \texttt{link-to-file1} has type \texttt{l} and
+      points to \texttt{src/file1.txt}.
+\item \textbf{Timestamp:} \texttt{old.txt} is empty and shows the modified timestamp (\texttt{Jan~2~2024}).
+\item \textbf{Directories:} \texttt{archive}, \texttt{tmp}, and
+      \texttt{src/lib} report \texttt{total 0}, confirming they exist and are empty.
+\item \textbf{Permissions:} New files are \texttt{rw-r--r--} ($644$) and new
+      directories are \texttt{rwxr-xr-x} ($755$).
+\end{itemize}
+
+\begin{figure}[htbp]
+\begin{lstlisting}[numbers=none, columns=fullflexible, keepspaces=true]
+payton@paytonpc:~$ mkdir -p ~/lx-test && cd ~/lx-test
+payton@paytonpc:~/lx-test$ printf "alpha\nbeta\nGamma\ngamma\nbeta\n" > words.txt
+payton@paytonpc:~/lx-test$ printf "id,name,dept\n1,Ada,EE\n2,Linus,CS\n3,Grace,EE\n4,Dennis,CS\n" > people.csv
+payton@paytonpc:~/lx-test$ printf "INFO boot ok\nWARN disk low\nERROR fan fail\nINFO shutdown\n" > sys.log
+payton@paytonpc:~/lx-test$ dd if=/dev/zero of=blob.bin bs=1K count=48 status=none
+payton@paytonpc:~/lx-test$ mkdir -p src/lib tmp archive
+payton@paytonpc:~/lx-test$ printf "one two three four\n" > src/file1.txt
+payton@paytonpc:~/lx-test$ printf "two three four five\n" > src/file2.txt
+payton@paytonpc:~/lx-test$ ln -s src/file1.txt link-to-file1
+payton@paytonpc:~/lx-test$ touch -t 202401020304 old.txt
+\end{lstlisting}
+\caption{Terminal input for setting up the \texttt{lx-test} working directory.}
+\label{Figure:LxTestSetup}
+\end{figure}
+
+\begin{figure}[htbp]
+\begin{lstlisting}[numbers=none, columns=fullflexible, keepspaces=true]
+payton@paytonpc:~/lx-test$ ls -lA . src src/lib archive tmp
+.:
+total 72
+drwxr-xr-x 2 payton payton  4096 Sep 26 15:39 archive
+-rw-r--r-- 1 payton payton 49152 Sep 26 15:39 blob.bin
+lrwxrwxrwx 1 payton payton    13 Sep 26 15:39 link-to-file1 -> src/file1.txt
+-rw-r--r-- 1 payton payton     0 Jan  2  2024 old.txt
+-rw-r--r-- 1 payton payton    56 Sep 26 15:39 people.csv
+drwxr-xr-x 3 payton payton  4096 Sep 26 15:39 src
+-rw-r--r-- 1 payton payton    56 Sep 26 15:39 sys.log
+drwxr-xr-x 2 payton payton  4096 Sep 26 15:39 tmp
+-rw-r--r-- 1 payton payton    28 Sep 26 15:39 words.txt
+
+archive:
+total 0
+
+src:
+total 12
+-rw-r--r-- 1 payton payton   19 Sep 26 15:39 file1.txt
+-rw-r--r-- 1 payton payton   20 Sep 26 15:39 file2.txt
+drwxr-xr-x 2 payton payton 4096 Sep 26 15:39 lib
+
+src/lib:
+total 0
+
+tmp:
+total 0
+\end{lstlisting}
+\caption{Terminal output showing the resulting directories after \texttt{lx-test} setup.}
+\label{Figure:LxTestDirectories}
+\end{figure}
+
+\begin{figure}[htbp]
+\begin{lstlisting}[numbers=none, columns=fullflexible, keepspaces=true]
+payton@paytonpc:~/lx-test$ head words.txt people.csv sys.log src/file1.txt src/file2.txt
+==> words.txt <==
+alpha
+beta
+Gamma
+gamma
+beta
+
+==> people.csv <==
+id,name,dept
+1,Ada,EE
+2,Linus,CS
+3,Grace,EE
+4,Dennis,CS
+
+==> sys.log <==
+INFO boot ok
+WARN disk low
+ERROR fan fail
+INFO shutdown
+
+==> src/file1.txt <==
+one two three four
+
+==> src/file2.txt <==
+two three four five
+\end{lstlisting}
+\caption{Terminal output showing the resulting file contents after \texttt{lx-test} setup.}
+\label{Figure:LxTestFiles}
+\end{figure}
+
+\section{Problem Set Solutions}
+\index{Linux!problem set}
+
+\subsection{Navigation and File Operations}
+\begin{enumerate}[label=\arabic*., leftmargin=*]
+\item Show your present working directory path only.
+\begin{lstlisting}[style=cmd]
+$ pwd
+\end{lstlisting}
+\item List all entries in the current directory, one per line, including dotfiles.
+\begin{lstlisting}[style=cmd]
+$ ls -1a
+\end{lstlisting}
+\item Copy \texttt{src/file1.txt} to \texttt{tmp/} only if \texttt{tmp} exists; do it verbosely.
+\begin{lstlisting}[style=cmd]
+$ [ -d tmp ] && cp -v src/file1.txt tmp/
+\end{lstlisting}
+\item Move \texttt{old.txt} into \texttt{archive/} and keep its original timestamp.
+\begin{lstlisting}[style=cmd]
+$ mv old.txt archive/
+\end{lstlisting}
+\item Create a new empty file \texttt{notes.md} only if it doesn't already exist.
+\begin{lstlisting}[style=cmd]
+$ [ -e notes.md ] || touch notes.md
+\end{lstlisting}
+\item Show disk usage (human-readable) for the \texttt{src} directory only (not total FS).
+\begin{lstlisting}[style=cmd]
+$ du -sh src
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Viewing and Searching}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Print line numbers while displaying \texttt{sys.log}.
+\begin{lstlisting}[style=cmd]
+$ cat -n sys.log
+\end{lstlisting}
+\item Show only the lines in \texttt{sys.log} that contain \texttt{ERROR} (case-sensitive).
+\begin{lstlisting}[style=cmd]
+$ grep 'ERROR' sys.log
+\end{lstlisting}
+\item Count how many distinct words appear in \texttt{words.txt} (case-insensitive).
+\begin{lstlisting}[style=cmd]
+$ tr '[:upper:]' '[:lower:]' < words.txt | sort -u | wc -l
+\end{lstlisting}
+\item From \texttt{words.txt}, show lines that start with \texttt{g} or \texttt{G}.
+\begin{lstlisting}[style=cmd]
+$ grep '^[gG]' words.txt
+\end{lstlisting}
+\item Display the first 2 lines of \texttt{people.csv} without using an editor.
+\begin{lstlisting}[style=cmd]
+$ head -n 2 people.csv
+\end{lstlisting}
+\item Show the last 3 lines of \texttt{sys.log} and keep following if the file grows.
+\begin{lstlisting}[style=cmd]
+$ tail -n 3 -f sys.log
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Text Processing}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item From \texttt{people.csv}, print only the name column (2nd), excluding the header.
+\begin{lstlisting}[style=cmd]
+$ tail -n +2 people.csv | cut -d, -f2
+\end{lstlisting}
+\item Sort \texttt{words.txt} case-insensitively and remove duplicates.
+\begin{lstlisting}[style=cmd]
+$ sort -fu words.txt
+\end{lstlisting}
+\item Replace every \texttt{three} with \texttt{3} in all files under \texttt{src/} in-place, creating \texttt{.bak} backups.
+\begin{lstlisting}[style=cmd]
+$ find src -type f -name '*.txt' -exec sed -i.bak 's/three/3/g' {} +
+\end{lstlisting}
+\item Print the number of lines, words, and bytes for every \texttt{*.txt} file in \texttt{src/}.
+\begin{lstlisting}[style=cmd]
+$ wc src/*.txt
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Permissions and Ownership}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Make \texttt{tmp/} readable, writable, and searchable only by the owner.
+\begin{lstlisting}[style=cmd]
+$ chmod 700 tmp/
+\end{lstlisting}
+\item Give group execute permission to \texttt{src/lib} recursively without touching others/owner bits.
+\begin{lstlisting}[style=cmd]
+$ chmod -R g+x src/lib
+\end{lstlisting}
+\item Show the numeric (octal) permissions of \texttt{src/file2.txt}.
+\begin{lstlisting}[style=cmd]
+$ stat -c '%a' src/file2.txt
+\end{lstlisting}
+\item Make \texttt{notes.md} append-only for the owner via file attributes (if supported).
+\begin{lstlisting}[style=cmd]
+$ sudo chattr +a notes.md
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Links and Find}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Verify whether \texttt{link-to-file1} is a symlink and show its target path.
+\begin{lstlisting}[style=cmd]
+$ [ -L link-to-file1 ] && readlink link-to-file1
+\end{lstlisting}
+\item Find all regular files under the current tree larger than 40~KiB.
+\begin{lstlisting}[style=cmd]
+$ find . -type f -size +40k
+\end{lstlisting}
+\item Find files modified in the last 10 minutes under \texttt{tmp/} and print their sizes.
+\begin{lstlisting}[style=cmd]
+$ find tmp/ -type f -mmin -10 -printf '%p %s\n'
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Processes and Job Control}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Show your processes in a tree view.
+\begin{lstlisting}[style=cmd]
+$ pstree -p "$USER"
+\end{lstlisting}
+\item Start \texttt{sleep 120} in the background and show its PID.
+\begin{lstlisting}[style=cmd]
+$ sleep 120 & echo $!
+\end{lstlisting}
+\item Send a TERM signal to all \texttt{sleep} processes owned by you (don't use \texttt{kill -9}).
+\begin{lstlisting}[style=cmd]
+$ pkill -TERM -u "$USER" -x sleep
+\end{lstlisting}
+\item Show the top 5 processes by memory usage (one-shot, not interactive).
+\begin{lstlisting}[style=cmd]
+$ ps aux --sort=-%mem | head -n 6
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Archiving and Compression}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Create a gzipped tar archive \texttt{src.tgz} from \texttt{src/} with relative paths.
+\begin{lstlisting}[style=cmd]
+$ tar -czf src.tgz src/
+\end{lstlisting}
+\item List the contents of \texttt{src.tgz} without extracting.
+\begin{lstlisting}[style=cmd]
+$ tar -tzf src.tgz
+\end{lstlisting}
+\item Extract only \texttt{file2.txt} from \texttt{src.tgz} into \texttt{tmp/}.
+\begin{lstlisting}[style=cmd]
+$ tar -xzvf src.tgz -C tmp/ --strip-components=1 src/file2.txt
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Networking and System Information}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Show all listening TCP sockets with associated PIDs (no root assumptions).
+\begin{lstlisting}[style=cmd]
+$ ss -ltnp
+\end{lstlisting}
+\item Print your default route (gateway) in a concise form.
+\begin{lstlisting}[style=cmd]
+$ ip route show default
+\end{lstlisting}
+\item Display kernel name, release, and machine architecture.
+\begin{lstlisting}[style=cmd]
+$ uname -srm
+\end{lstlisting}
+\item Show the last 5 successful logins (or last sessions) on the system.
+\begin{lstlisting}[style=cmd]
+$ last -n 5
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Packages and Services (Debian/Ubuntu)}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Show the installed version of package \texttt{coreutils}.
+\begin{lstlisting}[style=cmd]
+$ dpkg-query -W -f='${Version}\n' coreutils
+\end{lstlisting}
+\item Search available packages whose names contain \texttt{ripgrep}.
+\begin{lstlisting}[style=cmd]
+$ apt-cache search --names-only ripgrep
+\end{lstlisting}
+\item Check whether service \texttt{cron} is active and print its status line only.
+\begin{lstlisting}[style=cmd]
+$ systemctl status cron | grep 'Active:'
+\end{lstlisting}
+\end{enumerate}
+
+\subsection{Bash and Scripting}
+\begin{enumerate}[label=\arabic*., leftmargin=*, resume]
+\item Write a one-liner that loops over \texttt{*.txt} in \texttt{src/} and prints each file's name and line count.
+\begin{lstlisting}[style=cmd]
+$ for f in src/*.txt; do echo "$f: $(wc -l < "$f")"; done
+\end{lstlisting}
+\item Write a command that exports CSV rows where \texttt{dept == "CS"} to \texttt{cs.txt} (exclude header).
+\begin{lstlisting}[style=cmd]
+$ awk -F, 'NR>1 && $3=="CS"' people.csv > cs.txt
+\end{lstlisting}
+\item Create a variable \texttt{X} with value 42, print it, then remove it from the environment.
+\begin{lstlisting}[style=cmd]
+$ export X=42; echo "$X"; unset X
+\end{lstlisting}
+\end{enumerate}
diff --git a/devopsAssignment.tex b/devopsAssignment.tex
index ef9b449..0989d74 100644
--- a/devopsAssignment.tex
+++ b/devopsAssignment.tex
@@ -34,17 +34,17 @@
 \definecolor{devopsLightBlue}{RGB}{232,240,247}
 
 % Replace these values for each assignment.
-\newcommand{\AssignmentTitle}{Compile Overleaf Document and Detail Kanban Setup}
-\newcommand{\AssignmentNumber}{1}
-\newcommand{\DocumentVersion}{1.0}
+\newcommand{\AssignmentTitle}{Linux Commands}
+\newcommand{\AssignmentNumber}{2}
+\newcommand{\DocumentVersion}{2.0}
 \newcommand{\DocumentStatus}{Submitted Document}
 \newcommand{\CourseNumber}{SSW 590}
 \newcommand{\CourseName}{DevOps}
-\newcommand{\Author}{Payton Bates}
+\newcommand{\Author}{Payton Bates and Victor Del Rio Foces}
 \newcommand{\Instructor}{Darian Muresan, Ph.D.}
 \newcommand{\Organization}{Stevens Institute of Technology}
-\newcommand{\DocumentDate}{September 18, 2026}
-\newcommand{\DueDate}{September 21, 2026 by 11:59pm}
+\newcommand{\DocumentDate}{September 26, 2026}
+\newcommand{\DueDate}{September 28, 2026 by 11:59pm}
 \newcommand{\VERSION}{Version \DocumentVersion}
 
 \hypersetup{
@@ -88,6 +88,8 @@
   stringstyle=\color{devopsRed}, tabsize=2
 }
 
+\lstdefinestyle{cmd}{numbers=none, columns=fullflexible, upquote=true, belowskip=0pt, xleftmargin=5pt, xrightmargin=0pt}
+
 \changenormalspacing{\singlespacing}
 \begin{document}
 \pagenumbering{roman}
@@ -112,6 +114,7 @@
 \include{chapters/devopsKanbanSetup}
 \include{chapters/devopsHosts}
 \include{chapters/devopsPasswords}
+\include{chapters/devopsLinuxCommands}
 
 \appendix
 \include{backmatter/devopsAIPromptLog}
diff --git a/frontmatter/abstract.tex b/frontmatter/abstract.tex
index f20561d..071a419 100644
--- a/frontmatter/abstract.tex
+++ b/frontmatter/abstract.tex
@@ -1,7 +1,6 @@
-This document records the development-environment configuration for the first
-SSW 590 assignment. It describes the Kanban board used to plan and track the
-work, the hosts the environment will comprise, and the password rules that 
-will govern accounts on those hosts. The environment is specified here as a
-plan; provisioning and its supporting evidence are deferred to a later
-submission. Password rules are recorded as derivation hints, so that no
-credential appears in this document.
\ No newline at end of file
+This document records the development environment and working practices used
+in SSW 590. It is extended with each assignment, and the document history
+identifies what each revision changed. Its chapters currently cover planning and tracking
+the work, the hosts and accounts that make up the environment, and the
+command-line and operational work performed in it. Environments specified here
+are plans, and the actual provisioning will be done in the future.
\ No newline at end of file
diff --git a/frontmatter/devopsDocumentHistory.tex b/frontmatter/devopsDocumentHistory.tex
index 54bb425..dfbd064 100644
--- a/frontmatter/devopsDocumentHistory.tex
+++ b/frontmatter/devopsDocumentHistory.tex
@@ -11,5 +11,6 @@ link each entry to the changed chapter, table, figure, or controlled artifact.
 \multicolumn{4}{l}{\small\itshape Document Update History (continued)}\\
 \toprule \textbf{Date / Version} & \textbf{Author Initials} & \textbf{Change} & \textbf{Changed At}\\ \midrule
 \endhead \bottomrule \endlastfoot
+September 26, 2026 / 2.0 & PCB, VDRF & Added the Linux Commands chapter: working-directory setup with terminal input/output figures, command explanations and interpretation of results, and solutions to the Linux problem set. Updated document metadata and authorship for Assignment 2 and the two-person team. & \ChapterRef{LinuxCommands}, \ChapterRef{Introduction}, \ChapterRef{Hosts}, \ChapterRef{AIPromptLog}\\
 September 18, 2026 / 1.0 & PCB & Created this document from the \CourseNumber\ assignment template. Removed instructional/example chapters, set document metadata and authorship, and rewrote the abstract and introduction to describe this environment rather than the template. Added the Kanban Setup, Passwords, and Hosts chapters, the account and password rules, and the planned hosts. & \ChapterRef{Introduction}, \ChapterRef{KanbanSetup}, \ChapterRef{Passwords}, \ChapterRef{Hosts}, \ChapterRef{AIPromptLog}\\
 \end{tabularx}
\ No newline at end of file