mirror of https://github.com/alibaba/arthas.git
update for 3.1.5
hengyunabc
5 years ago
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# Sphinx build info version 1
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# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
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config: 21ae19bb5b38586246fb0f497e4b5519
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config: fe74e2eb5d564ca43da81926005e8947
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tags: 645f666f9bcd5a90fca523b33c5a78b7
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Grep
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===
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||||
|
||||
> Similar to the traditional `grep` command.
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```
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USAGE:
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grep [-A <value>] [-B <value>] [-C <value>] [-h] [-i] [-v] [-n] [-m <value>] [-e] [--trim-end] pattern
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SUMMARY:
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||||
grep command for pipes.
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|
||||
EXAMPLES:
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sysprop | grep java
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sysprop | grep java -n
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sysenv | grep -v JAVA
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sysenv | grep -e "(?i)(JAVA|sun)" -m 3 -C 2
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sysenv | grep JAVA -A2 -B3
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thread | grep -m 10 -e "TIMED_WAITING|WAITING"
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WIKI:
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https://alibaba.github.io/arthas/grep
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OPTIONS:
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-A, --after-context <value> Print NUM lines of trailing context)
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-B, --before-context <value> Print NUM lines of leading context)
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-C, --context <value> Print NUM lines of output context)
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-h, --help this help
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-i, --ignore-case Perform case insensitive matching. By default, grep is case sensitive.
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-v, --invert-match Select non-matching lines
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-n, --line-number Print line number with output lines
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-m, --max-count <value> stop after NUM selected lines)
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-e, --regex Enable regular expression to match
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--trim-end Remove whitespaces at the end of the line
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<pattern> Pattern
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```
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@ -0,0 +1,170 @@
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profiler
|
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===
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> Generate a flame graph using [async-profiler](https://github.com/jvm-profiling-tools/async-profiler)
|
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|
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The `profiler` command supports generate flame graph for application hotspots.
|
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|
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The basic usage of the `profiler` command is `profiler action [actionArg]`
|
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|
||||
### Start profiler
|
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|
||||
```
|
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$ profiler start
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Started [cpu] profiling
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```
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> By default, the sample event is `cpu`. Can be specified with the `--event` parameter.
|
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|
||||
|
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### Get the number of samples collected
|
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|
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```
|
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$ profiler getSamples
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23
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```
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|
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### View profiler status
|
||||
|
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```bash
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$ profiler status
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[cpu] profiling is running for 4 seconds
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```
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|
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Can view which `event` and sampling time.
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|
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### Stop profiler
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#### Generate svg format results
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|
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```
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$ profiler stop
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profiler output file: /tmp/demo/arthas-output/20191125-135546.svg
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OK
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```
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By default, the generated results are saved to the `arthas-output` directory under the application's `working directory`. The output result path can be specified by the `--file` parameter. such as:
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```bash
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$ profiler stop --file /tmp/output.svg
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profiler output file: /tmp/output.svg
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OK
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```
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|
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#### Generating html format results
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By default, the result file is `svg` format. If you want to generate the `html` format, you can specify it with the `--format` parameter:
|
||||
|
||||
```bash
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$ profiler stop --format html
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profiler output file: /tmp/test/arthas-output/20191125-143329.html
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OK
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```
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|
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Or use the file name name format in the `--file` parameter. For example, `--file /tmp/result.html`.
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|
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### View profiler results under arthas-output via browser
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|
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By default, arthas uses port 3658, which can be opened: [http://localhost:3658/arthas-output/](http://localhost:3658/arthas-output/) View the `arthas-output` directory below Profiler results:
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|
||||
|
||||
|
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Click to view specific results:
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|
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> If using the chrome browser, may need to be refreshed multiple times.
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### Profiler supported events
|
||||
|
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Under different platforms and different OSs, the supported events are different. For example, under macos:
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|
||||
```bash
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$ profiler list
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Basic events:
|
||||
cpu
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alloc
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lock
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wall
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itimer
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```
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Under linux
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||||
|
||||
```bash
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$ profiler list
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Basic events:
|
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cpu
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alloc
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lock
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wall
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||||
itimer
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||||
Perf events:
|
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page-faults
|
||||
context-switches
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||||
cycles
|
||||
instructions
|
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cache-references
|
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cache-misses
|
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branches
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branch-misses
|
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bus-cycles
|
||||
L1-dcache-load-misses
|
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LLC-load-misses
|
||||
dTLB-load-misses
|
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mem:breakpoint
|
||||
trace:tracepoint
|
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```
|
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|
||||
If you encounter the permissions/configuration issues of the OS itself and then missing some events, you can refer to the [async-profiler](https://github.com/jvm-profiling-tools/async-profiler) documentation.
|
||||
|
||||
You can use the `--event` parameter to specify the event to sample, such as sampling the `alloc` event:
|
||||
|
||||
```bash
|
||||
$ profiler start --event alloc
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||||
```
|
||||
|
||||
|
||||
### Resume sampling
|
||||
|
||||
```bash
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||||
$ profiler resume
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||||
Started [cpu] profiling
|
||||
```
|
||||
|
||||
The difference between `start` and `resume` is: `start` is the new start sampling, `resume` will retain the data of the last `stop`.
|
||||
|
||||
You can verify the number of samples by executing `profiler getSamples`.
|
||||
|
||||
|
||||
### Use `execute` action to execute complex commands
|
||||
|
||||
For example, start sampling:
|
||||
|
||||
```bash
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||||
profiler execute 'start'
|
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```
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|
||||
Stop sampling and save to the specified file:
|
||||
|
||||
```bash
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||||
profiler execute 'stop,file=/tmp/result.svg'
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```
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|
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Specific format reference: [arguments.cpp#L34](https://github.com/jvm-profiling-tools/async-profiler/blob/v1.6/src/arguments.cpp#L34)
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||||
|
||||
### View all supported actions
|
||||
|
||||
```bash
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||||
$ profiler actions
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||||
Supported Actions: [resume, dumpCollapsed, getSamples, start, list, execute, version, stop, load, dumpFlat, actions, dumpTraces, status]
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```
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|
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### View version
|
||||
|
||||
```bash
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$ profiler version
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||||
Async-profiler 1.6 built on Sep 9 2019
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Copyright 2019 Andrei Pangin
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```
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<!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">
|
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|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
|
||||
<title>Grep — Arthas 3.1.5 documentation</title>
|
||||
|
||||
|
||||
|
||||
|
||||
<link rel="shortcut icon" href="_static/favicon.ico"/>
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/github.min.css">
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|
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|
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<a href="index.html" class="icon icon-home"> Arthas
|
||||
|
||||
|
||||
|
||||
</a>
|
||||
|
||||
|
||||
|
||||
|
||||
<div class="version">
|
||||
3.1.5
|
||||
</div>
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<ul class="current">
|
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<li class="toctree-l1"><a class="reference external" href="https://alibaba.github.io/arthas/arthas-tutorials?language=en">Online tutorials(Recommend)</a></li>
|
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<li class="toctree-l2 current"><a class="current reference internal" href="#">grep</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="pwd.html">pwd</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="commands.html#basic-arthas-commands">Basic Arthas Commands</a></li>
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|
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered">Questions and answers</a></li>
|
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
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|
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/releases">Release Notes</a></li>
|
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|
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<li><a href="commands.html">All Commands</a> »</li>
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|
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<li>Grep</li>
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<hr/>
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</div>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
||||
<div itemprop="articleBody">
|
||||
|
||||
<div class="section" id="grep">
|
||||
<h1>Grep<a class="headerlink" href="#grep" title="Permalink to this headline">¶</a></h1>
|
||||
<blockquote>
|
||||
<div><p>Similar to the traditional <code class="docutils literal notranslate"><span class="pre">grep</span></code> command.</p>
|
||||
</div></blockquote>
|
||||
<div class="highlight-default notranslate"><pre class="literal-block"> USAGE:
|
||||
grep [-A <value>] [-B <value>] [-C <value>] [-h] [-i] [-v] [-n] [-m <value>] [-e] [--trim-end] pattern
|
||||
|
||||
SUMMARY:
|
||||
grep command for pipes.
|
||||
|
||||
EXAMPLES:
|
||||
sysprop | grep java
|
||||
sysprop | grep java -n
|
||||
sysenv | grep -v JAVA
|
||||
sysenv | grep -e "(?i)(JAVA|sun)" -m 3 -C 2
|
||||
sysenv | grep JAVA -A2 -B3
|
||||
thread | grep -m 10 -e "TIMED_WAITING|WAITING"
|
||||
|
||||
WIKI:
|
||||
https://alibaba.github.io/arthas/grep
|
||||
|
||||
OPTIONS:
|
||||
-A, --after-context <value> Print NUM lines of trailing context)
|
||||
-B, --before-context <value> Print NUM lines of leading context)
|
||||
-C, --context <value> Print NUM lines of output context)
|
||||
-h, --help this help
|
||||
-i, --ignore-case Perform case insensitive matching. By default, grep is case sensitive.
|
||||
-v, --invert-match Select non-matching lines
|
||||
-n, --line-number Print line number with output lines
|
||||
-m, --max-count <value> stop after NUM selected lines)
|
||||
-e, --regex Enable regular expression to match
|
||||
--trim-end Remove whitespaces at the end of the line
|
||||
<pattern> Pattern</pre>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
||||
</div>
|
||||
|
||||
</div>
|
||||
<footer>
|
||||
|
||||
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
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<a href="pwd.html" class="btn btn-neutral float-right" title="pwd" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
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<a href="cat.html" class="btn btn-neutral float-left" title="cat" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
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</div>
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|
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|
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<hr/>
|
||||
|
||||
<div role="contentinfo">
|
||||
<p>
|
||||
© Copyright 2018-2019, Alibaba Middleware Group, and contributors
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|
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</p>
|
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</div>
|
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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>.
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|
||||
</footer>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</section>
|
||||
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
<script type="text/javascript">
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jQuery(function () {
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SphinxRtdTheme.Navigation.enable(true);
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|
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|
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|
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|
||||
|
||||
<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>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/highlight.min.js"></script>
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hljs.highlightBlock(block);
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s.parentNode.insertBefore(hm, s);
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||||
|
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</body>
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</html>
|
||||
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