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arthas/tutorials/katacoda/command-heapdump-en/heapdump.md

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> dump java heap in hprof binary format, like `jmap`.
### Usage
#### Dump to file
`heapdump /tmp/dump.hprof`{{execute T2}}
```bash
[arthas@58205]$ heapdump /tmp/dump.hprof
Dumping heap to /tmp/dump.hprof...
Heap dump file created
```
#### Dump only live objects
`heapdump --live /tmp/dump.hprof`{{execute T2}}
```bash
[arthas@58205]$ heapdump --live /tmp/dump.hprof
Dumping heap to /tmp/dump.hprof...
Heap dump file created
```
#### Dump to tmp file
`heapdump`{{execute T2}}
```bash
[arthas@58205]$ heapdump
Dumping heap to /var/folders/my/wy7c9w9j5732xbkcyt1mb4g40000gp/T/heapdump2019-09-03-16-385121018449645518991.hprof...
Heap dump file created
```