update batch-support.md. #1072

site/src/site/sphinx/batch-support.md

@@ -11,14 +11,14 @@
 
 > 注意事项
 > * 目前需要每个命令占一行
-> * dashboard务必开启批处理模式(`-b`)，指定执行次数(`-n`)，否则会导致批处理脚本无法终止
+> * dashboard务必指定执行次数(`-n`)，否则会导致批处理脚本无法终止
 > * watch/tt/trace/monitor/stack等命令务必指定执行次数(`-n`)，否则会导致批处理脚本无法终止
 > * 可以使用异步后台任务，如 `watch c.t.X test returnObj > &`，让命令一直在后台运行，通过日志获取结果，[获取更多异步任务的信息](async.md)
 
 ```
 ➜  arthas git:(develop) cat /var/tmp/test.as
 help
-dashboard -b -n 1
+dashboard -n 1
 session
 thread
 sc -d org.apache.commons.lang.StringUtils
@@ -26,10 +26,16 @@ sc -d org.apache.commons.lang.StringUtils
 
 #### 第二步： 运行你的批处理脚本
 
-通过`-b`开启批处理模式， `-f`执行脚本文件， 批处理脚本默认会输出到标准输出中，可以将结果重定向到文件中。
+通过`-f`执行脚本文件， 批处理脚本默认会输出到标准输出中，可以将结果重定向到文件中。
 
 ```bash
-./as.sh -b -f /var/tmp/test.as 56328 > test.out
+./as.sh -f /var/tmp/test.as 56328 > test.out
+```
+
+也可以通过 `-c` 来指定指行的命令，比如
+
+```bash
+./as.sh -c 'sysprop; thread' 56328 > test.out
 ```
 
 #### 第三步： 查看运行结果

site/src/site/sphinx/en/batch-support.md

@@ -12,7 +12,7 @@ Create a `test.as` script suffixed with `as`. Here `as` is suggested for the suf
 ```bash
 ➜  arthas git:(develop) cat /var/tmp/test.as
 help
-dashboard -b -n 1
+dashboard -n 1
 session
 thread
 sc -d org.apache.commons.lang.StringUtils
@@ -20,16 +20,22 @@ sc -d org.apache.commons.lang.StringUtils
 
 Note:
 * Each command takes one line.
-* Batch mode (via `-b`) and execution times (via `-n`) must be explicitly specified for `dashboard`, otherwise batch script cannot terminate.
+* Batch mode execution times (via `-n`) must be explicitly specified for `dashboard`, otherwise batch script cannot terminate.
 * Commands such as `watch`/`tt`/`trace`/`monitor`/`stack` should include `-n` option to ensure the script can be able to quit.
 * Also consider to use `async` (for example: `watch c.t.X test returnObj > &`) to put commands run at background and get the output from the log file, see more from [asynchronous job](async.md)
 
 #### Step 2: Run the script
 
-Use `-b` to turn on batch mode, and use `-f` to specify the script file. By default the result will be output to the standard output, but you can redirect the output to the file like this:
+Use `-f` to specify the script file. By default the result will be output to the standard output, but you can redirect the output to the file like this:
 
 ```bash
-./as.sh -b -f /var/tmp/test.as 56328 > test.out
+./as.sh -f /var/tmp/test.as 56328 > test.out
+```
+
+Use `-c` also can specify the commands, like this:
+
+```bash
+./as.sh -c 'sysprop; thread' 56328 > test.out
 ```
 
 #### Step 3: Check the outputs