Updated lib module info

This commit is contained in:
Kenneth John Odle 2021-09-06 10:13:13 -04:00
parent cba503b7f5
commit 49a053c0bf
6 changed files with 144 additions and 110 deletions

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Chapter 1.
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Chapter 3.
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Chapter 4.
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@ -310,12 +310,46 @@ Some examples include:
Users' home directories. If you have multiple users, you will see a directory in here for each user, named after their login name. Their personal settings are stored as invisible files in their home directory.
\section{lib}
This directory contains libraries that are essential for the binaries in \verb|/bin| and \verb|/sbin|. It also contains kernel module, whose filenames are identifiable as \verb|ld*| or \verb|lib*.so.*|.
This directory contains libraries that are essential for the binaries in \verb|/bin| and \verb|/sbin|. It also contains kernel module, whose filenames are identifiable as \verb|ld*| or \verb|lib*.so.*|. Unlike bin, it only contains system binaries which require root privilege.
\medskip
\noindent \textbf{lib32} and \textbf{lib64} — We are still in a transition between 32-bit and 64-bit systems.\footnote{How is this even possible? SMDH.} These two libraries clarify which register size to use. A 64-bit system may have compatibility for 32-bit binaries.
\medskip
\noindent \textbf{lib/modules} — This directory stores kernel modules (pieces of code that can be loaded and unloaded into the kernel upon demand, adding functionality to the kernel without needing to reboot the system\footnote{Handy, that.}), with each installed kernel having its own directory. The Linux kernel typically loads kernel modules from the appropriate kernel version directory.
To show which kernel modules are currently loaded, run
\begin{verbatim}
$ lsmod
\end{verbatim}
To show information about a module:
\begin{verbatim}
$ modinfo module_name
\end{verbatim}
To list the options that are set for a loaded module:
\begin{verbatim}
$systool -v -m module_name
\end{verbatim}
To display the configuration of a particular module:
\begin{verbatim}
$ modprobe -c | grep module_name
\end{verbatim}
To list the dependancie of a module:
\begin{verbatim}
$ modprobe --show-depends module_name
\end{verbatim}
\section{media}
Mount points for removable media. Using a jump drive or SD card? This is where they are.
@ -323,7 +357,7 @@ Mount points for removable media. Using a jump drive or SD card? This is where t
Temporarily mounted filesystems.
\section{opt}
Add-on application software packages.
Add-on application software packages. When some applications are installed directly from source, they will place themselves in \verb|opt|.
\section{proc}
A virtual filesystem providing process and kernel information as files. In general, the system automatically generates and populates these files.
@ -433,7 +467,7 @@ Also, there is no easy way to get a word-count from a LaTeX document, nor is the
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