Editing Solaris 10 System Administration Part I (section)

=== File systems ===

Unix File System (UFS) is the default file system

Directory starts with root directory (/)

Solaris 10 OS includes alternate file system called zettabyte file system (ZFS)

Logically all directories fall below root directory (/)

Physically directories can be located on one or spread over multiple file systems

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Refer to filesystem man page for more information on file system organization.

<code>$ man -s 5 filesystem</code>

Important directories

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">
    <tr>
      <td>Directory</td>
      <td>Notes</td>
    </tr>
    <tr>
      <td>/</td>
      <td>root of file system</td>
    </tr>
<tr>
      <td>/bin</td>
      <td>symbolic link to /usr/bin & location for binary files of standard system commands</td>
    </tr>
<tr>
      <td>/dev</td>
      <td>primary directory for logical device names & contents of directory are symbolic links to device files in /devices directory</td>
    </tr>
<tr>
      <td>/etc</td>
      <td>directory holds host-specific config files & databases for system administration</td>
</tr>
<tr>
      <td>/export</td>
      <td>default directory for commonly shared file systems (like user home directories)</td>
</tr>
<tr>
      <td>/home</td>
      <td>default directory or mount point for user home directories</td>
</tr>
<tr>
      <td>/kernel</td>
      <td></td>
</tr>
<tr>
      <td>/lib</td>
      <td></td>
</tr>
<tr>
      <td>/mnt</td>
      <td></td>
</tr>
<tr>
      <td>/opt</td>
      <td></td>
</tr>
<tr>
      <td>/platform</td>
      <td></td>
</tr>
<tr>
      <td>/sbin</td>
      <td></td>
</tr>
<tr>
      <td>/usr</td>
      <td></td>
</tr>
<tr>
      <td>/var</td>
      <td></td>
</tr>
</table>

==== Important in-memory system directories ====

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">

<tr>
     <td>/dev/fd</td>
     <td></td>
</tr>
<tr>
     <td>/devices</td>
     <td></td>
</tr>
<tr>
     <td>/etc/mnttab</td>
     <td></td>
</tr>
<tr>
     <td>/etc/svc/volatile</td>
     <td></td>
</tr>
<tr>
     <td>/proc</td>
     <td></td>
</tr>
<tr>
     <td>/system/contract</td>
     <td></td>
</tr>
<tr>
     <td>/system/object</td>
     <td></td>
</tr>
<tr>
     <td>/tmp</td>
     <td>directory for temporary files (cleared during boot sequence)</td>
</tr>
<tr>
     <td>/var/run</td>
     <td></td>
</tr>
</table>

==== Subdirectories of note under /dev ====

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">
<tr>
     <td>/dev/dsk</td>
     <td>block disk devices</td>
</tr>
<tr>
     <td>/dev/fd</td>
     <td>file descriptors</td>
</tr>
<tr>
     <td>/dev/md</td>
     <td>logical volume management metadisk drives</td>
</tr>
<tr>
     <td>/dev/pts</td>
     <td>pseudo terminal devices</td>
</tr>
<tr>
     <td>/dev/rdsk</td>
     <td>raw disk devices</td>
</tr>
<tr>
     <td>/dev/rmt</td>
     <td>raw magnetic devices</td>
</tr>
<tr>
     <td>/dev/term</td>
     <td>serial devices</td>
</tr>
</table>

==== Important subdirectories under /etc ====

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">
<tr>
     <td>/etc/acct</td>
     <td>config info for accounting system</td>
</tr>
<tr>
     <td>/etc/cron.d</td>
     <td>config info for cron utility</td>
</tr>
<tr>
     <td>/etc/default</td>
     <td>default info for various programs</td>
</tr>
<tr>
     <td>/etc/inet</td>
     <td>config files for network services</td>
</tr>
<tr>
     <td>/etc/init.d</td>
     <td>scripts for starting & stopping services</td>
</tr>
<tr>
     <td>/etc/lib</td>
     <td></td>
</tr>
<tr>
     <td>/etc/lp</td>
     <td>config info for printer subsystem</td>
</tr>
<tr>
     <td>/etc/mail</td>
     <td>config info for mail subsystem</td>
</tr>
<tr>
     <td>/etc/nfs</td>
     <td>config file for NFS server logging</td>
</tr>
<tr>
     <td>/etc/opt</td>
     <td>config info for optional packages</td>
</tr>
<tr>
     <td>/etc/rc#.d</td>
     <td>legacy scripts that are executed when entering or leaving a specific run level</td>
</tr>
<tr>
     <td>/etc/security</td>
     <td>controls files for Role Based Access Control & security privileges</td>
</tr>
<tr>
     <td>/etc/skel</td>
     <td>default shell initialization files for new users</td>
</tr>
<tr>
     <td>/etc/svc</td>
     <td>Service Management Facility database & log files</td>
</tr>
</table>

==== Important subdirectories of /usr ====

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">
<tr>
     <td>/usr/bin</td>
     <td>standard system commands</td>
</tr>
<tr>
     <td>/usr/ccs</td>
     <td>C-compilation programs & libraries</td>
</tr>
<tr>
     <td>/usr/demo</td>
     <td>demo programs & data</td>
</tr>
<tr>
     <td>/usr/dt</td>
     <td>Java Desktop System (JDS) software directory or mount point</td>
</tr>
<tr>
     <td>/usr/include</td>
     <td>Header files</td>
</tr>
<tr>
     <td>/usr/jdk</td>
     <td>directory contains Java technology programs & libraries</td>
</tr>
<tr>
     <td>/usr/kernel</td>
     <td>loadable kernel modules not generally required during boot process</td>
</tr>
<tr>
     <td>/usr/lib</td>
     <td>architecture-dependent databases, libraries, & binaries that are not invoked directly by user</td>
</tr>
<tr>
     <td>/usr/opt</td>
     <td>config info for optional packages</td>
</tr>
<tr>
     <td>/usr/sbin</td>
     <td>sys admin coomands</td>
</tr>
<tr>
     <td>/usr/spool</td>
     <td>symbolic link to /var/spool directory</td>
</tr>
</table>

==== Important subdirectories of /var ====

<table style="text-align: left; width: 50%;" border="1"
 cellpadding="2" cellspacing="0">
<tr>
     <td>/var/adm</td>
     <td>log files for syslog, system accounting, etc</td>
</tr>
<tr>
     <td>/var/crash</td>
     <td>crash dump storage</td>
</tr>
<tr>
     <td>/var/spool</td>
     <td>spool files storage</td>
</tr>
<tr>
     <td>/var/svc</td>
     <td>Service Management Facility control files and logs</td>
</tr>
<tr>
     <td>/var/tmp</td>
     <td>long term storage of temp files (survives reboot)</td>
</tr>
</table>