run: add a new "-t" mode for invoking a binary on an allocated TTY

[elogind.git] / man / systemd-detect-virt.xml

diff --git a/man/systemd-detect-virt.xml b/man/systemd-detect-virt.xml
index e167bddd07df5fcd744d666298f2062fa1c92f26..d8e881cf2e82f49ed6b41207b84713ce7255f29e 100644 (file)
--- a/man/systemd-detect-virt.xml
+++ b/man/systemd-detect-virt.xml
@@ -61,7 +61,14 @@
                 execution in a virtualized environment. It identifies
                 the virtualization technology and can distinguish full
                 VM virtualization from container
-                virtualization.</para>
+                virtualization. <filename>systemd-detect-virt</filename>
+                exits with a return value of 0 (success) if a
+                virtualization technology is detected, and non-zero
+                (error) otherwise. By default any type of
+                virtualization is detected, and the options
+                <option>--container</option> and <option>--vm</option>
+                can be used to limit what types of virtualization are
+                detected.</para>
 
                 <para>When executed without <option>--quiet</option>
                 will print a short identifier for the detected
@@ -69,26 +76,37 @@
                 are currently identified:</para>
 
                 <table>
-                  <title>Known VM virtualization technologies</title>
-                  <tgroup cols='2' align='left' colsep='1' rowsep='1'>
+                  <title>Known virtualization technologies (both
+                  VM, i.e. full hardware virtualization,
+                  and container, i.e. shared kernel virtualization)</title>
+                  <tgroup cols='3' align='left' colsep='1' rowsep='1'>
+                    <colspec colname="type" />
                     <colspec colname="id" />
                     <colspec colname="product" />
                     <thead>
                       <row>
+                        <entry>Type</entry>
                         <entry>ID</entry>
-                        <entry>VM Product</entry>
+                        <entry>Product</entry>
                       </row>
                     </thead>
                     <tbody>
                       <row>
+                        <entry morerows="8">VM</entry>
                         <entry><varname>qemu</varname></entry>
                         <entry>QEMU software virtualization</entry>
                       </row>
+
                       <row>
                         <entry><varname>kvm</varname></entry>
                         <entry>Linux KVM kernel virtual machine</entry>
                       </row>
 
+                      <row>
+                        <entry><varname>zvm</varname></entry>
+                        <entry>s390 z/VM</entry>
+                      </row>
+
                       <row>
                         <entry><varname>vmware</varname></entry>
                         <entry>VMware Workstation or Server, and related products</entry>
@@ -106,7 +124,7 @@
 
                       <row>
                         <entry><varname>xen</varname></entry>
-                        <entry>Xen hypervisor</entry>
+                        <entry>Xen hypervisor (only domU, not dom0)</entry>
                       </row>
 
                       <row>
@@ -119,23 +137,8 @@
                         <entry>User-mode Linux</entry>
                       </row>
 
-                    </tbody>
-                  </tgroup>
-                </table>
-
-                <table>
-                  <title>Known container virtualization technologies</title>
-                  <tgroup cols='2' align='left' colsep='1' rowsep='1'>
-                    <colspec colname="id" />
-                    <colspec colname="product" />
-                    <thead>
-                      <row>
-                        <entry>ID</entry>
-                        <entry>Container Product</entry>
-                      </row>
-                    </thead>
-                    <tbody>
                       <row>
+                        <entry morerows="5">container</entry>
                         <entry><varname>openvz</varname></entry>
                         <entry>OpenVZ/Virtuozzo</entry>
                       </row>