bashSheet.tex

%%Strictly a bash cheat sheet.
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{relsize}
\usepackage{float}
\usepackage{longtable}

\begin{document}


\begin{center}
  \begin{longtable}{||p{5.5cm}|p{5.5cm}||} %longtable so it wraps pages
    \caption{Bash commands and what they mean}
    %make the main header
    \\\hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endfirsthead
    %make the next page header
    \hline
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued from previous page}}
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endhead
    %make the previous page footer
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued on next
        page}} \\ \hline
    \endfoot
    %make the last footer
    \hline
    \endlastfoot
    %contents of the table
    \verb|ls| & list contents of current directory
    \\ \hline
    \verb|ls -a| & show hidden files too \\ \hline
    \verb|ls -altr| & see the last changes made to
    the files in a directory \\ \hline
    \verb|mkdir directory| & make a new directory
    \\ \hline
    \verb|cd directory| & change directory \\ \hline
    \verb|cd .. |& go back a directory \\ \hline
    \verb|cd ../..| & go back two directories \\ \hline
    \verb|cd ~ |& go to your root \\ \hline
    \verb|pwd| & print working directory \\ \hline
    \verb|~/| & means your root \\ \hline
    \verb|.| & means the current directory \\ \hline
    \verb|cp file/to/copy where/newName| & copy
    a file \\ \hline
    \verb|cp file/to/copy .| & copy a file to current
    directory without changing the name \\ \hline
    \verb|cp directory/* . |& copy all the files in a
    directory \\ \hline
    & to the current directory \\ \hline
    \verb|cp -r directory new/directory| & copy a
    directory recursively \\ \hline
    \verb|rm file/to/remove| & remove a file \\ \hline
    \verb|rmdir directory| & remove a directory \\ \hline
    \verb|rm -rf directory| & blow away a directory
    permanently \\ \hline
    \verb|mv file/to/move where/newName| & moves
    or renames a file \\ \hline
    \verb|man command| & show the manual for a
    command \\ \hline
    \verb|cat file/one file/two| \textgreater \verb| new_file|
    & concatonate two or more
    files into a new file \\ \hline
    \verb|history| & shows a history of your
    commands \\ \hline
    \verb|less file/to/see| & shows one page of a
    file \\ \hline
    & space turns the page q quits \\ \hline
    \verb|head file/to/see| & see the first page
    of a file \\ \hline
    \verb|head -n 8 file/to/see| & see the first 8 lines
    of a file \\ \hline
    \verb|tail file/to/see| & see the last page of a file
    \\ \hline
    \verb|tail -n 10 file/to/see| & see the last 10 lines
    of a file \\ \hline
    \verb|grep keyword file/to/search| & search a file
    for a keyword and print all the lines with
    that
    keyword
    to the
    screen \\ \hline
    \verb|history |\textbar\verb| grep keyword| & search your history
    for a keyword \\ \hline
    \verb|grep keyword file/to/search|& count
    the occurences of lines with a \\
    \textbar \verb| wc -l| & keyword\\ \hline
    \verb|command |\textbar \verb| less| & pipe the output of a command
    to less \\ \hline
    \verb|command |\textgreater\textgreater\verb| file|
    & append the output of a
    command to a file \\ \hline
    \verb|command |\textgreater \verb| file| & writes the output of the
    command to a file \\ \hline
    \verb|!command| & executes the most recent command
    that starts with the letters you typed \\ \hline
    \verb|echo something| & print something to the screen \\\hline
    \verb|ls -altr| & see when files in the directory were last
                      altered \\\hline
    \verb|sed -i 's/to replace/new| & find and replace a phrase in a
                                      file \\
    \verb|phrase/' file/to/search| & \\ \hline
    \verb|grep -Rl keyword| & recursively search for a keyword and
                              print the file it was found in \\\hline
    \verb|awk '!a[$0]++' file/to/search| & get rid of duplicate lines
    \\\hline
    \verb|echo "phrase" >> file/to/append| & append a phrase to a file \\\hline
  \end{longtable}
\end{center} 


\begin{center}
  \begin{longtable}{||p{4.5cm}|p{6.5cm}||}%longtable so it wraps pages
    \caption{Emacs commands and what they mean}
    %first header
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endfirsthead
    %next page header
    \hline
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued from previous page}}
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endhead
    %footer
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued on next
        page}} \\ \hline
    \endfoot
    %last footer
    \hline
    \endlastfoot
    %contents of table
    \verb|emacs path/to/file| & enter emacs editor for
    existing file or creates new file with that name \\ \hline
    ctrl+x ctrl+s & save file \\ \hline
    ctrl+x ctrl+c y & save and quit a file \\ \hline
    ctrl+x ctrl+c n & quit without saving \\ \hline
    ctrl+w & cut a line (highlight line first) \\ \hline
    ctrl+y & paste a line \\ \hline
    ctrl+k & kills the contents of a line/cut a line \\ \hline
    ctrl+k ctrl+k ... & kills however many lines--helpful to copy and
                        paste blocks of code \\ \hline
    ctrl+shift+- & undo \\ \hline
    ctrl+u \verb|3 command| & executes the command 3 times \\ \hline
    ctrl+x ctrl+f & find and open a file (at the bottom of the screen)\\ \hline
    ctrl+space & set marker \\ \hline
    \multicolumn{2}{||c||}{Add text to a block of code}
    \\ \hline
    ctrl+space & set marker \\ 
    ctrl+x & set end of rectangle\\
    R & format as rectangle\\
    T ``text" & add text\\ 
    or k & or delete  \\                
                    
  \end{longtable}
\end{center}

\begin{center}
  \begin{longtable}{||p{4.5cm}|p{6.5cm}||}
    \caption{Loops in bash}
    %first header
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endfirsthead
    %next page header
    \hline
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued from previous page}}
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endhead
    % footer
    \\ \hline
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued on next
        page}} \\ \hline
    \endfoot
    %last footer
    \hline
    \endlastfoot
    %contents of table
    \verb|for i in {1..100}| & for 100 iterations \\
    \verb|do|& \\
    \verb|command $i| & do this thing(\verb|$i| \\
    \verb|done| & references the index)\\
    \hline
    \verb|if [ condition ]| & check the condition \\
    \verb|then| & if it's true \\
    \verb|command| & do this \\
    \verb|else| & if it's not \\
    \verb|command| & do this \\
    \verb|fi| & ends if statement \\ \hline
    \verb|if [ -e file ] |& check if a file exists \\ \hline 
    \verb|for i in `ls -d */`| & visit every directory in the current \\
    \verb|do cd $i| & directory \\
    \verb|command| & and execute some command \\
    \verb|cd .. done| & \\ \hline
    \hline
  \end{longtable}
\end{center}

\begin{center}
  \begin{longtable}{||p{4.5cm}|p{6.5cm}||}
    \caption{Example of a Bash loop}
    %first header
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endfirsthead
    %next page header
    \hline
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued from previous page}}
    \\ \hline
    \textbf{Command} & \textbf{What it does}\\ \hline \hline
    \endhead
    %footer
    \multicolumn{2}{||c||}
    {\tablename\ \thetable\ -- \textit{Continued on next
        page}} \\ \hline
    \endfoot
    %last page footer
    \hline
    \endlastfoot
    \verb|for i in `ls -d */`| & for all directories \\
    \verb|do| & \\
    \verb|cd $i| & enter the directory named\\
    \verb|if [! -f KPOINTS]|& if KPOINTS doesn't exist\\
    \verb|then getKPoints| & run the getKPoints script \\
    \verb|echo $i| & print the directory number \\
    \verb|fi| & end if statement\\
    \verb|cd ..| & go back one directory \\
    \verb|done|& close loop\\
  \end{longtable}
\end{center}

\end{document}