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Arthas tee 命令教程 (#1322)
* add tee command scenario. #847 Signed-off-by: hollowman6 <hollowman186@vip.qq.com> * fix link typo Signed-off-by: hollowman6 <hollowman186@vip.qq.com> * add tee details to documents Signed-off-by: hollowman6 <hollowman186@vip.qq.com> * polish tee command scenario. #847 Signed-off-by: hollowman6 <hollowman186@vip.qq.com>
This commit is contained in:
Hollow Man
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tee
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===
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> Similar to the traditional `tee` command.
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[`tee` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-tee)
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> Similar to the traditional `tee` command, it is used to read standard input data and output its contents into a file.
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> `tee` will read data from standard input device, output its content to standard output device, and save it as a file.
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```
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@@ -1,7 +1,11 @@
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tee
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===
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> 类似传统的`tee`命令。
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[`tee`在线教程](https://alibaba.github.io/arthas/arthas-tutorials?language=cn&id=command-tee)
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> 类似传统的`tee`命令, 用于读取标准输入的数据，并将其内容输出成文件。
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> tee指令会从标准输入设备读取数据，将其内容输出到标准输出设备，同时保存成文件。
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```
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在新的`Terminal 2`里，下载`arthas-boot.jar`，再用`java -jar`命令启动：
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`wget https://alibaba.github.io/arthas/arthas-boot.jar
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java -jar arthas-boot.jar --target-ip 0.0.0.0`{{execute T2}}
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`arthas-boot`是`Arthas`的启动程序，它启动后，会列出所有的Java进程，用户可以选择需要诊断的目标进程。
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选择第一个进程，输入 `1`{{execute T2}} ，再`Enter/回车`：
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Attach成功之后，会打印Arthas LOGO。输入 `help`{{execute T2}} 可以获取到更多的帮助信息。
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下载`arthas-demo.jar`，再用`java -jar`命令启动：
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`wget https://alibaba.github.io/arthas/arthas-demo.jar
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java -jar arthas-demo.jar`{{execute T1}}
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`arthas-demo`是一个很简单的程序，它随机生成整数，再执行因式分解，把结果打印出来。如果生成的随机数是负数，则会打印提示信息。
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通过本教程基本掌握了Arthas tee的用法。更多高级特性，可以在下面的进阶指南里继续了解。
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* [Arthas进阶](https://alibaba.github.io/arthas/arthas-tutorials?language=cn&id=arthas-advanced)
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* [Arthas Github](https://github.com/alibaba/arthas)
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* [Arthas 文档](https://alibaba.github.io/arthas/)
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欢迎关注公众号，获取Arthas项目的信息，源码分析，案例实践。
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{
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"title": "Arthas tee命令教程",
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"description": "Arthas tee命令教程",
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"details": {
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"steps": [
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{
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"title": "启动arthas-demo",
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"text": "arthas-demo.md"
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},
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{
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"title": "启动arthas-boot",
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"text": "arthas-boot.md"
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},
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{
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"title": "tee 命令",
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"text": "tee.md"
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}
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],
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"intro": {
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"text": "intro.md"
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},
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"finish": {
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"text": "finish.md"
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}
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},
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"environment": {
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"uilayout": "terminal"
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},
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"backend": {
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"imageid": "java",
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"environmentsprotocol": "http"
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}
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}
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`Arthas` 是Alibaba开源的Java诊断工具，深受开发者喜爱。在线排查问题，无需重启；动态跟踪Java代码；实时监控JVM状态。
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`Arthas` 支持JDK 6+，支持Linux/Mac/Windows，采用命令行交互模式，同时提供丰富的 `Tab` 自动补全功能，进一步方便进行问题的定位和诊断。
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* Github: https://github.com/alibaba/arthas
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* 文档: https://alibaba.github.io/arthas/
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类似传统的`tee`命令 用于读取标准输入的数据，并将其内容输出成文件。
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tee指令会从标准输入设备读取数据，将其内容输出到标准输出设备，同时保存成文件。
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`tee -h`{{execute T2}}
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```bash
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USAGE:
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tee [-a] [-h] [file]
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SUMMARY:
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tee command for pipes.
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EXAMPLES:
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sysprop | tee /path/to/logfile | grep java
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sysprop | tee -a /path/to/logfile | grep java
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WIKI:
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https://alibaba.github.io/arthas/tee
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OPTIONS:
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-a, --append Append to file
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-h, --help this help
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<file> File path
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```
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## 命令示范
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### 将sysprop命令执行结果另外存储在`/tmp/logfile`中
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`sysprop | tee /tmp/logfile`{{execute T2}}
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查看`/tmp/logfile`文件：
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`cat /tmp/logfile`{{execute T2}}
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### 将sysprop命令执行结果匹配`java`后另外追加在`/tmp/logfile`中
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`sysprop | grep java | tee -a /path/to/logfile`{{execute T2}}
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查看`/tmp/logfile`文件：
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`cat /tmp/logfile`{{execute T2}}
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@@ -0,0 +1,15 @@
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In the new `Terminal 2`, download `arthas-boot.jar` and start with the `java -jar` command:
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`wget https://alibaba.github.io/arthas/arthas-boot.jar
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java -jar arthas-boot.jar --target-ip 0.0.0.0`{{execute T2}}
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`arthas-boot` is the launcher for `Arthas`. It lists all the Java processes, and the user can select the target process to be diagnosed.
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Select the first process, type `1`{{execute T2}} ，then type `Enter`：
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After the Attach is successful, Arthas LOGO is printed. Enter `help`{{execute T2}} for more help.
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@@ -0,0 +1,11 @@
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Download `arthas-demo.jar` and start with the `java -jar` command:
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`wget https://alibaba.github.io/arthas/arthas-demo.jar
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java -jar arthas-demo.jar`{{execute T1}}
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`arthas-demo` is a very simple program that randomly generates integers, performs factorization, and prints the results.
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If the generated random number is negative, a error message will be printed.
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Through this tutorial, you can know how to use Arthas `tee`. More advanced features can be found in the Advanced Guide below.
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* [Arthas Advanced](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=arthas-advanced)
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* [Arthas Github](https://github.com/alibaba/arthas)
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* [Arthas Documentation](https://alibaba.github.io/arthas/en)
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@@ -0,0 +1,33 @@
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{
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"title": "Arthas tee",
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"description": "Arthas tee",
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"details": {
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"steps": [
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{
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"title": "Start arthas-demo",
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"text": "arthas-demo.md"
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},
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{
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"title": "Start arthas-boot",
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"text": "arthas-boot.md"
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},
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{
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"title": "tee command",
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"text": "tee.md"
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}
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],
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"intro": {
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"text": "intro.md"
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},
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"finish": {
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"text": "finish.md"
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}
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},
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"environment": {
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"uilayout": "terminal"
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},
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"backend": {
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"imageid": "java",
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"environmentsprotocol": "http"
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}
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}
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`Arthas` is a Java diagnostic tool open-sourced by Alibaba middleware team. Arthas helps developers in trouble-shooting issues in production environment for Java based applications without modifying code or restarting servers.
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`Arthas` supports JDK 6+, supports Linux/Mac/Windows.
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* Github: https://github.com/alibaba/arthas
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* Documentation: https://alibaba.github.io/arthas/en
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@@ -0,0 +1,44 @@
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Similar to the traditional `tee` command, it is used to read standard input data and output its contents into a file.
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`tee` will read data from standard input device, output its content to standard output device, and save it as a file.
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`tee -h`{{execute T2}}
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```bash
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USAGE:
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tee [-a] [-h] [file]
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SUMMARY:
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tee command for pipes.
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EXAMPLES:
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sysprop | tee /path/to/logfile | grep java
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sysprop | tee -a /path/to/logfile | grep java
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WIKI:
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https://alibaba.github.io/arthas/tee
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OPTIONS:
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-a, --append Append to file
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-h, --help this help
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<file> File path
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```
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## Examples
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### Store sysprop execution result into `/tmp/logfile`
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`sysprop | tee /tmp/logfile`{{execute T2}}
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Check `/tmp/logfile`:
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`cat /tmp/logfile`{{execute T2}}
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### Append sysprop matching `java` result into `/tmp/logfile`
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`sysprop | grep java | tee -a /path/to/logfile`{{execute T2}}
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Check `/tmp/logfile`:
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`cat /tmp/logfile`{{execute T2}}
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