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<meta name="description" content=" Basic Command Usage The Singularity commandSingularity uses a primary command wrapper called singularity. When you run singularity without any options or arguments it will dump the high level usage syntax.The general usage form is:$ singularity (opts1) [subcommand] (opts2) ...If you type singularity without any arguments, you will see a high level help for all arguments:USAGE: singularity [global options...] <command> [command options...] ...GLOBAL OPTIONS: -d --debug Print debugging information -h --help Display usage summary -q --quiet Only print errors --version Show application version -v --verbose Increase verbosity +1 -x --sh-debug Print shell wrapper debugging informationGENERAL COMMANDS: help Show additional help for a command selftest Run some self tests to make sure Singularity is installed and operating properlyCONTAINER USAGE COMMANDS: exec Execute a command within container run Launch a runscript within container shell Run a Bourne shell within container test Execute any test code defined within containerCONTAINER USAGE OPTIONS: see singularity <command> helpCONTAINER MANAGEMENT COMMANDS (requires root): bootstrap Bootstrap a new Singularity image from scratch copy Copy files from your host into the container create Create a new container image expand Grow the container image export Export the contents of a container via a tar pipe import Import/add container contents via a tar pipe mount Mount a Singularity container imageCONTAINER REGISTRY COMMANDS: pull pull a Singularity Hub container to $PWDFor any additional help or support visit the Singularitywebsite: http://singularity.lbl.gov/Options and argument processingBecause of the nature of how Singularity cascades commands and sub-commands, argument processing is done with a mandatory order. This means that where you place arguments is important! In the above usage example, opts1 are the global Singularity run-time options. These options are always applicable no matter what subcommand you select (e.g. --verbose or --debug). But subcommand specific options must be passed after the relevant subcommand.To further clarify this example, the exec Singularity subcommand will execute a program within the container and pass the arguments passed to the program. So to mitigate any argument clashes, Singularity must not interpret or interfere with any of the command arguments or options that are not relevant for that particular function.Singularity HelpSingularity comes with some internal documentation by using the help subcommand followed by the subcommand you want more information about. For example:$ singularity help createCREATE OPTIONS: -s/--size Specify a size for an operation in MiB, i.e. 1024*1024B (default 768MiB) -F/--force Overwrite an image file if it existsEXAMPLES: $ singularity create /tmp/Debian.img $ singularity create -s 4096 /tmp/Debian.imgFor additional help, please visit our public documentation pages which arefound at: http://singularity.lbl.gov/ Previous Next Edit me Site last generated: Jul 26, 2017 ">
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<h1 class="post-title-main">Basic Command Usage</h1>
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<h2 id="the-singularity-command">The Singularity command</h2>
<p>Singularity uses a primary command wrapper called <code class="highlighter-rouge">singularity</code>. When you run <code class="highlighter-rouge">singularity</code> without any options or arguments it will dump the high level usage syntax.</p>
<p>The general usage form is:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>singularity <span class="o">(</span>opts1<span class="o">)</span> <span class="o">[</span>subcommand] <span class="o">(</span>opts2<span class="o">)</span> ...
</code></pre>
</div>
<p>If you type <code class="highlighter-rouge">singularity</code> without any arguments, you will see a high level help for all arguments:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code>USAGE: singularity <span class="o">[</span>global options...] <<span class="nb">command</span>> <span class="o">[</span><span class="nb">command </span>options...] ...
GLOBAL OPTIONS:
-d --debug Print debugging information
-h --help Display usage summary
-q --quiet Only print errors
--version Show application version
-v --verbose Increase verbosity +1
-x --sh-debug Print shell wrapper debugging information
GENERAL COMMANDS:
<span class="nb">help </span>Show additional <span class="nb">help </span><span class="k">for </span>a <span class="nb">command
</span>selftest Run some self tests to make sure Singularity is
installed and operating properly
CONTAINER USAGE COMMANDS:
<span class="nb">exec </span>Execute a <span class="nb">command </span>within container
run Launch a runscript within container
shell Run a Bourne shell within container
<span class="nb">test </span>Execute any <span class="nb">test </span>code defined within container
CONTAINER USAGE OPTIONS:
see singularity <<span class="nb">command</span>> <span class="nb">help
</span>CONTAINER MANAGEMENT COMMANDS <span class="o">(</span>requires root<span class="o">)</span>:
bootstrap Bootstrap a new Singularity image from scratch
copy Copy files from your host into the container
create Create a new container image
expand Grow the container image
<span class="nb">export </span>Export the contents of a container via a tar pipe
import Import/add container contents via a tar pipe
mount Mount a Singularity container image
CONTAINER REGISTRY COMMANDS:
pull pull a Singularity Hub container to <span class="nv">$PWD</span>
For any additional <span class="nb">help </span>or support visit the Singularity
website: http://singularity.lbl.gov/
</code></pre>
</div>
<h3 id="options-and-argument-processing">Options and argument processing</h3>
<p>Because of the nature of how Singularity cascades commands and sub-commands, argument processing is done with a mandatory order. <strong>This means that where you place arguments is important!</strong> In the above usage example, <code class="highlighter-rouge">opts1</code> are the global Singularity run-time options. These options are always applicable no matter what subcommand you select (e.g. <code class="highlighter-rouge">--verbose</code> or <code class="highlighter-rouge">--debug</code>). But subcommand specific options must be passed after the relevant subcommand.</p>
<p>To further clarify this example, the <code class="highlighter-rouge">exec</code> Singularity subcommand will execute a program within the container and pass the arguments passed to the program. So to mitigate any argument clashes, Singularity must not interpret or interfere with any of the command arguments or options that are not relevant for that particular function.</p>
<h3 id="singularity-help">Singularity Help</h3>
<p>Singularity comes with some internal documentation by using the <code class="highlighter-rouge">help</code> subcommand followed by the subcommand you want more information about. For example:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>singularity <span class="nb">help </span>create
CREATE OPTIONS:
-s/--size Specify a size <span class="k">for </span>an operation <span class="k">in </span>MiB, i.e. 1024<span class="k">*</span>1024B
<span class="o">(</span>default 768MiB<span class="o">)</span>
-F/--force Overwrite an image file <span class="k">if </span>it exists
EXAMPLES:
<span class="nv">$ </span>singularity create /tmp/Debian.img
<span class="nv">$ </span>singularity create -s 4096 /tmp/Debian.img
For additional <span class="nb">help</span>, please visit our public documentation pages which are
found at:
http://singularity.lbl.gov/
</code></pre>
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