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# heapdump
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[`heapdump` online tutorial](https://arthas.aliyun.com/doc/arthas-tutorials.html?language=en&id=command-heapdump)
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::: tip
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dump java heap in hprof binary format, like `jmap`.
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:::
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## Usage
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### Dump to file
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```bash
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[arthas@58205]$ heapdump arthas-output/dump.hprof
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Dumping heap to arthas-output/dump.hprof ...
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Heap dump file created
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```
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::: tip
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The generated file is located in the arthas-output directory and can be downloaded through the browser at http://localhost:8563/arthas-output/
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:::
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### Dump only live objects
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```bash
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[arthas@58205]$ heapdump --live /tmp/dump.hprof
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Dumping heap to /tmp/dump.hprof ...
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Heap dump file created
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```
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### Dump to tmp file
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```bash
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[arthas@58205]$ heapdump
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Dumping heap to /var/folders/my/wy7c9w9j5732xbkcyt1mb4g40000gp/T/heapdump2019-09-03-16-385121018449645518991.hprof...
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Heap dump file created
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```
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