how to access android files /data/anr/traces.txt and /data/tombstones/tombstones

Question

I am writing an application for reporting crashes and the relevant logs. So from my application I am trying to access traces.txt and tombstones, but I am getting an error:

03-25 09:48:46.220 W/System.err(10250): java.io.FileNotFoundException: /data/tombstone/tombstone_00 (Permission denied)

I am able to access traces.txt, but not tombstones.

Did you use the [READ_LOGS](http://developer.android.com/reference/android/Manifest.permission.html#READ_LOGS) permission? — amccormack, Jul 14 '11 at 15:04

score 40 · Answer 1 · answered Mar 29 '11 at 05:39

40

You can use adb tool located in your_sd_root_dir/tools. Use it like this

./adb pull path_to_file location_to_save

answered Mar 29 '11 at 05:39

Mojo Risin

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thanks Mojo but,I want to do it from my android application. – learner Mar 29 '11 at 07:25
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I am not able to pull contents of /data/tombstones using this method. adb says permission denied – vivek.m Jun 03 '11 at 05:45
wouldn't this only work in the emulator? – CQM Nov 21 '12 at 20:12
It should work as root as well. – NoBugs Apr 03 '13 at 01:17

score 29 · Answer 2 · edited Jul 30 '19 at 11:51

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You can capture a full bug report in Developer Options (see Android docs). In the bug report's ZIP file, you can find tombstones and anr folders in /FS/data.

This will work with rooted and unrooted devices.

edited Jul 30 '19 at 11:51

Zaffy

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answered Dec 06 '17 at 18:27

bannus

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unroot devices finnaly got /data/tombstones/ by `adb bugreport`. // android 10. // BTW `adb pull` or `adb shell` no permissions. – yurenchen Nov 27 '21 at 11:50
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adb bugreport is the only way works for unrooted Android 10+ version phones. It will show permissions deny when using adb pull or cp to /sdcard/ folder. – StoneLam Apr 01 '22 at 06:28

score 26 · Answer 3 · answered Feb 24 '15 at 11:14

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If you get "permission denied" you can do this:

adb shell "cp /data/anr/traces.txt /storage/extSdCard/" 
adb pull /storage/extSdCard/traces.txt

answered Feb 24 '15 at 11:14

Yassin

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I get No such file or directory when I execute `adb shell "cp /data/anr/traces.txt /storage/extSdCard/" ` and I get permission denied on adb shell `"cp /data/tombstones/traces.txt /storage/extSdCard/"` – Coder Sep 11 '15 at 07:27
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@mundella Find an intermediate directory that works for you -- I use `/sdcard/`, and rename the file, so my script looks like: `adb shell "cp /data/anr/traces.txt /sdcard/anr_trace.txt" ; adb pull /sdcard/anr_trace.txt` – benkc Sep 14 '15 at 19:43
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I get an error: `permission denied` – IgorGanapolsky Jun 29 '16 at 17:21
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still get permission denied – JPM Mar 31 '17 at 16:29

score 14 · Answer 4 · edited Jan 12 '17 at 19:46

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^{Note: This only works with android emulators and rooted android devices.}

You can first check if the file is created or not. You can do this by going in

DDMS -> File Explorer -> data -> data -> (Your Package) -> files -> (Your File)

DDMS is on right top corner of your eclipse. If the file is not present in the above mentioned path then it is not created properly but if it is still there change the path your file accordingly while accessing it eg. /data/data/(Your Package)/traces.txt

You can also pull that traces.txt file onto your desktop. Pull option is given on top bar below DDMS.

edited Jan 12 '17 at 19:46

answered Mar 29 '11 at 05:12

Harshad

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Here are a few pictures depicting the same.. http://sree.cc/google/file-explorer-for-android-in-eclipse-ide – Anoop Chandrika HarisudhanNair Mar 29 '11 at 05:58
thanks Harshad but ,I want to do it from my android application. – learner Mar 29 '11 at 07:25
are you able to see traces.txt at above mentioned location?? If you are able to see it then i suggest you to correct your path where you are accessing it. – Harshad Mar 29 '11 at 07:43
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Hi Harshad, traces.txt has permission -rw-rw-rw so im able to access this file :) , but how i can now access /data/tombstones/ – learner Mar 29 '11 at 16:10
wouldn't this only work in the emulator? – CQM Nov 21 '12 at 20:11
@CQM Yes. It will show only for emulator. – Harshad Nov 22 '12 at 11:09
It may show up only when you are root (on the device). – NoBugs Apr 03 '13 at 01:17
Awesome tip! Pulling data from adb is a bit of hassle. – asgs Jul 16 '13 at 05:43
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i see logcat message: Stack trace written to: /data/anr/traces.txt , but the /data directory itself appears to be empty in File Explorer view. Any idea? – Jasper Feb 17 '15 at 16:40
Cannot expand `data` directory in DDMS file explorer. – IgorGanapolsky Jun 29 '16 at 17:22

score 12 · Answer 5 · answered Jun 03 '16 at 12:36

12

This did it for me: adb pull "/data/anr/traces.txt"

answered Jun 03 '16 at 12:36

box

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Confirmed working without root on S8+. Thanks! – Pär Nils Amsen Sep 13 '17 at 10:45

score 8 · Answer 6 · answered Aug 08 '17 at 07:13

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adb shell "cd /data/anr && cat traces.txt" > anr.txt

This will copy traces.txt in anr.txt in your current set directory

answered Aug 08 '17 at 07:13

Rachita Nanda

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This is very useful. – Billy Oct 23 '17 at 11:08
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still get `permission denied` – thundertrick Nov 25 '19 at 03:24
Can anyone please help me in this related [question](https://stackoverflow.com/questions/62008671/how-to-get-anr-stack-trace-file-from-non-rooted-device-on-android-q) as non of the available answer solves – MrinmoyMk May 25 '20 at 18:57

score 1 · Answer 7 · answered Jan 04 '13 at 16:00

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You should be able to get the file you need via DropBoxManager class http://developer.android.com/reference/android/os/DropBoxManager.html

The tombstone file is also copied to dropbox (at least on emulator)

answered Jan 04 '13 at 16:00

Swav

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would would be the values for tag and msec in getNextEntry to get the contents of /data/anr/traces.txt ? – Stephan Steiner Sep 03 '13 at 16:45
The values would be something like this getNextEntry("SYSTEM_TOMBSTONE", before). Unfortunately this throws an Exception unless you are signed with the system key. – Jo Jo Oct 14 '15 at 19:36

score 0 · Answer 8 · answered Mar 24 '17 at 18:37

Adb shell data/system/Dropbox then use ls to view files generated inside Dropbox iinside dropbox you will get crashes,anr and traces file

If you want access them create folder and open adb inside that folder and use following command adb pull data/system/dropbox

how to access android files /data/anr/traces.txt and /data/tombstones/tombstones

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