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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
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% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
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% Document Info
\author{bytebar}
\pdfinfo{
  /Title (linux-commands.pdf)
  /Creator (Cheatography)
  /Author (bytebar)
  /Subject (Linux Commands Cheat Sheet)
}

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% Header and Footer
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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Linux Commands Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{bytebar} via \textcolor{DarkBackground}{\uline{cheatography.com/218949/cs/48439/}}}
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\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}bytebar \\
  \uline{cheatography.com/bytebar} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 14th September, 2026.\\
   Updated 14th September, 2026.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
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  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.


\begin{tabularx}{17.67cm}{x{6.7353 cm} x{10.5347 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Navigation \& Files}}  \tn
% Row 0
\SetRowColor{LightBackground}
`pwd` & Print working directory \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`ls -la` & List all files incl. hidden, with details \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`cd -` & Jump back to previous directory \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
`cp -r src dst` & Copy recursively \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
`mv old new` & Move / rename \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
`rm -rf dir` & Delete recursively, no prompt (⚠️ careful) \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`mkdir -p a/b/c` & Create nested directories \tn 
% Row Count 11 (+ 2)
% Row 7
\SetRowColor{white}
`touch file` & Create empty file / update timestamp \tn 
% Row Count 13 (+ 2)
% Row 8
\SetRowColor{LightBackground}
`find / -name "*.log"` & Search by name \tn 
% Row Count 15 (+ 2)
% Row 9
\SetRowColor{white}
`grep -r "error" /var/log` & Search inside files, recursive \tn 
% Row Count 17 (+ 2)
% Row 10
\SetRowColor{LightBackground}
`cat / less / head / tail` & View files (`tail -f` follows live) \tn 
% Row Count 19 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{The 40+ commands CompTIA Linux+, Security+, and every sysadmin interview expect.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.3899 cm} x{10.8801 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Permissions}}  \tn
% Row 0
\SetRowColor{LightBackground}
`ls -l` & Show permissions (`-rwxr-xr-{}-`) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`chmod 755 file` & rwx / r-x / r-x — standard for scripts \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`chmod 644 file` & rw- / r-{}- / r-{}- — standard for files \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`chown user:group file` & Change owner \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`sudo !!` & Re-run last command as root \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{{\bf{Numeric recap:}} 4 = read, 2 = write, 1 = execute → 7 = rwx, 6 = rw-, 5 = r-x, 4 = r-{}-}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.7353 cm} x{10.5347 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Networking}}  \tn
% Row 0
\SetRowColor{LightBackground}
`ip a` & Show interfaces + IPs (modern `ifconfig`) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`ip r` & Show routing table \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
`ping -c 4 host` & Test connectivity \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
`ss -tulpn` & Listening ports + processes (modern `netstat`) \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`curl -I host` & Fetch headers \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
`dig +short example.com` & DNS lookup \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`traceroute host` & Path packets take \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
`ssh user@host` & Secure remote shell \tn 
% Row Count 13 (+ 1)
% Row 8
\SetRowColor{LightBackground}
`scp file \seqsplit{user@host:/path`} & Secure copy \tn 
% Row Count 15 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{Modern replacements: `ip` for `ifconfig`, `ss` for `netstat`.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.2896 cm} x{8.9804 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{System \& Processes}}  \tn
% Row 0
\SetRowColor{LightBackground}
`ps aux | grep nginx` & Find processes \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`top` / `htop` & Live process monitor \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
`kill -9 PID` & Force-kill a process \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
`systemctl status nginx` & Service status \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`systemctl restart nginx` & Restart a service \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
`journalctl -u nginx -f` & Follow service logs \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`df -h` & Disk space (human-readable) \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
`du -sh *` & Directory sizes \tn 
% Row Count 13 (+ 1)
% Row 8
\SetRowColor{LightBackground}
`free -h` & Memory usage \tn 
% Row Count 14 (+ 1)
% Row 9
\SetRowColor{white}
`uptime` & Load + uptime \tn 
% Row Count 15 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`uname -a` & Kernel / system info \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{`-h` means human-readable — use it for df, du, free.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.8077 cm} x{8.4623 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Text Power Tools}}  \tn
% Row 0
\SetRowColor{LightBackground}
`grep -i "fail" log` & Case-insensitive search \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`sort file | uniq -c` & Count unique lines \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`awk '\{print \$1\}' file` & Print column 1 \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`sed 's/old/new/g' file` & Find and replace \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`wc -l file` & Count lines \tn 
% Row Count 9 (+ 1)
% Row 5
\SetRowColor{white}
`history | grep ssh` & Search command history \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{Chain them with pipes — that's where the power is.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}