<!DOCTYPE html>
<!-- [if IE 8]><html class="no - js lt - ie9" lang="en" > <![endif] -->
<!-- [if gt IE 8]><! --> < html class = "no-js" lang = "en" > <!-- <![endif] -->
< head >
< meta charset = "utf-8" >
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< title > Log command outputs — Arthas 3.1.1 documentation< / title >
< link rel = "shortcut icon" href = "_static/favicon.ico" / >
< link rel = "stylesheet" href = "_static/css/theme.css" type = "text/css" / >
< link rel = "stylesheet" href = "_static/pygments.css" type = "text/css" / >
< link rel = "stylesheet" href = "_static/overrides.css" type = "text/css" / >
< link rel = "index" title = "Index" href = "genindex.html" / >
< link rel = "search" title = "Search" href = "search.html" / >
< link rel = "next" title = "Batch Processing" href = "batch-support.html" / >
< link rel = "prev" title = "Arthas Async Jobs" href = "async.html" / >
< script src = "_static/center_page.js" > < / script >
< link rel = "stylesheet" href = "https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/github.min.css" >
< script src = "_static/js/modernizr.min.js" > < / script >
< / head >
< body class = "wy-body-for-nav" >
< div class = "wy-grid-for-nav" >
< nav data-toggle = "wy-nav-shift" class = "wy-nav-side" >
< div class = "wy-side-scroll" >
< div class = "wy-side-nav-search" >
< a href = "index.html" class = "icon icon-home" > Arthas
< / a >
< div class = "version" >
3.1.1
< / div >
< div role = "search" >
< form id = "rtd-search-form" class = "wy-form" action = "search.html" method = "get" >
< input type = "text" name = "q" placeholder = "Search docs" / >
< input type = "hidden" name = "check_keywords" value = "yes" / >
< input type = "hidden" name = "area" value = "default" / >
< / form >
< / div >
< / div >
< div class = "wy-menu wy-menu-vertical" data-spy = "affix" role = "navigation" aria-label = "main navigation" >
< ul class = "current" >
< li class = "toctree-l1" > < a class = "reference external" href = "https://alibaba.github.io/arthas/arthas-tutorials?language=en" > Online tutorials(Recommend)< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "install-detail.html" > Installation< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "quick-start.html" > Quick start< / a > < / li >
< li class = "toctree-l1 current" > < a class = "reference internal" href = "advanced-use.html" > Advanced usage< / a > < ul class = "current" >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#basic" > Basic< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#jvm" > JVM< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#class-classloader" > class/classloader< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#monitor-watch-trace-related" > monitor/watch/trace - related< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#options" > options< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#pipe" > pipe< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#async-in-background" > async in background< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#web-console" > Web Console< / a > < / li >
< li class = "toctree-l2 current" > < a class = "reference internal" href = "advanced-use.html#other-features" > Other features< / a > < ul class = "current" >
< li class = "toctree-l3" > < a class = "reference internal" href = "async.html" > Async support< / a > < / li >
< li class = "toctree-l3 current" > < a class = "current reference internal" href = "#" > log the output< / a > < ul >
< li class = "toctree-l4" > < a class = "reference internal" href = "#use-asynchronous-job-to-log" > Use asynchronous job to log< / a > < / li >
< / ul >
< / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "batch-support.html" > batch< / a > < / li >
< li class = "toctree-l3" > < a class = "reference external" href = "https://github.com/alibaba/arthas/issues/11" > how to use ognl< / a > < / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "commands.html" > Commands< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "docker.html" > Docker< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/issues?q=label%3Auser-case" > User cases< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered" > Questions and answers< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas" > Fork me at GitHub< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md" > CONTRIBUTING< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "release-notes.html" > Release Notes< / a > < / li >
< / ul >
< / div >
< / div >
< / nav >
< section data-toggle = "wy-nav-shift" class = "wy-nav-content-wrap" >
< nav class = "wy-nav-top" aria-label = "top navigation" >
< i data-toggle = "wy-nav-top" class = "fa fa-bars" > < / i >
< a href = "index.html" > Arthas< / a >
< / nav >
< div class = "wy-nav-content" >
< div class = "rst-content" >
< div role = "navigation" aria-label = "breadcrumbs navigation" >
< ul class = "wy-breadcrumbs" >
< li > < a href = "index.html" > Docs< / a > » < / li >
< li > < a href = "advanced-use.html" > Advanced Usage< / a > » < / li >
< li > Log command outputs< / li >
< li class = "wy-breadcrumbs-aside" >
< a href = "https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/en/save-log.md" class = "fa fa-github" > Edit on GitHub< / a >
< / li >
< / ul >
< hr / >
< / div >
< div role = "main" class = "document" itemscope = "itemscope" itemtype = "http://schema.org/Article" >
< div itemprop = "articleBody" >
< div class = "section" id = "log-command-outputs" >
< span id = "log-command-outputs" > < / span > < h1 > Log command outputs< a class = "headerlink" href = "#log-command-outputs" title = "Permalink to this headline" > ¶< / a > < / h1 >
< blockquote >
< div > Log command outputs for later analysis< / div > < / blockquote >
< ul >
< li > < p class = "first" > By default, this behavior is turned off. To enable it, execute the command below:< / p >
< div class = "highlight-bash notranslate" > < div class = "highlight hljs" > < pre class = "bash" > $ options save-result true
NAME BEFORE-VALUE AFTER-VALUE
----------------------------------------
save-result false true
Affect(row-cnt:1) cost in 3 ms.
< / pre > < / div >
< / div >
< p > If the message above is output on the console, then this behavior is enabled successfully.< / p >
< / li >
< li > < p class = "first" > Log file path< / p >
< p > The command execution result will be save in < tt class = "docutils literal" > {user.home}/logs/arthas-cache/result.log< / tt > . Pls. clean it up regularly to save disk space.< / p >
< / li >
< / ul >
< div class = "section" id = "use-asynchronous-job-to-log" >
< span id = "use-asynchronous-job-to-log" > < / span > < h2 > Use asynchronous job to log< a class = "headerlink" href = "#use-asynchronous-job-to-log" title = "Permalink to this headline" > ¶< / a > < / h2 >
< div class = "highlight-bash notranslate" > < div class = "highlight hljs" > < pre class = "bash" > $ trace Test t > > &
job id : 2
cache location : /Users/zhuyong/logs/arthas-cache/28198/2
< / pre > < / div >
< / div >
< p > By doing this, the command will run at background asynchronously, and output the execution result into < tt class = "docutils literal" > ~/logs/arthas-cache/{PID}/{JobId}< / tt > :< / p >
< ul class = "simple" >
< li > The background job will continue to run even if the current session is disconnected. The default job timeout value is 1 day, use global ‘ < a class = "reference internal" href = "options.html" > < span class = "doc" > options< / span > < / a > ’ < / li >
< li > The execution result will be output into the file asynchronously. Pls. note the behavior of this command is not controlled by < tt class = "docutils literal" > save-result< / tt > option from global < a class = "reference internal" href = "options.html" > < span class = "doc" > options< / span > < / a > . No matter < tt class = "docutils literal" > save-result< / tt > is set to < tt class = "docutils literal" > true< / tt > or not, this command will write into < tt class = "docutils literal" > ~/logs/arthas-cache/{PID}/{JobId}< / tt > anyway, instead of into < tt class = "docutils literal" > ~/logs/arthas-cache/result.log< / tt > .< / li >
< / ul >
< / div >
< / div >
< / div >
< / div >
< footer >
< div class = "rst-footer-buttons" role = "navigation" aria-label = "footer navigation" >
< a href = "batch-support.html" class = "btn btn-neutral float-right" title = "Batch Processing" accesskey = "n" rel = "next" > Next < span class = "fa fa-arrow-circle-right" > < / span > < / a >
< a href = "async.html" class = "btn btn-neutral" title = "Arthas Async Jobs" accesskey = "p" rel = "prev" > < span class = "fa fa-arrow-circle-left" > < / span > Previous< / a >
< / div >
< hr / >
< div role = "contentinfo" >
< p >
© Copyright 2018-2019, Alibaba Middleware Group, and contributors.
< / p >
< / div >
Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a < a href = "https://github.com/rtfd/sphinx_rtd_theme" > theme< / a > provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
< / footer >
< / div >
< / div >
< / section >
< / div >
< script type = "text/javascript" >
var DOCUMENTATION_OPTIONS = {
URL_ROOT:'./',
VERSION:'3.1.1',
LANGUAGE:'en',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
};
< / script >
< script type = "text/javascript" src = "_static/jquery.js" > < / script >
< script type = "text/javascript" src = "_static/underscore.js" > < / script >
< script type = "text/javascript" src = "_static/doctools.js" > < / script >
< script type = "text/javascript" src = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML" > < / script >
< script type = "text/javascript" src = "_static/js/theme.js" > < / script >
< script type = "text/javascript" >
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
< / script >
< div class = "github-fork-ribbon-wrapper right" >
< div class = "github-fork-ribbon" >
< a href = "https://github.com/alibaba/arthas" target = "_blank" > Fork me at GitHub< / a >
< / div >
< / div >
< script type = "text/javascript" src = "_static/add_badges.js" > < / script >
< script src = "https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/highlight.min.js" > < / script >
< script src = "https://cdnjs.cloudflare.com/ajax/libs/highlightjs-line-numbers.js/2.5.0/highlightjs-line-numbers.min.js" > < / script >
< script >
document.querySelectorAll('div.hljs > pre').forEach(function(block) {
hljs.highlightBlock(block);
hljs.lineNumbersBlock(block);
});
< / script >
< script >
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
< / script >
< / body >
< / html >
