Tutorial and example app

[justbennet]

Not sure what is wrong, so the question may be semi-coherent.

I am trying to work through the tutorial at http://bids-apps.neuroimaging.io/tutorial/

I have Docker version 1.10.3, build d381c64-unsupported as installed by yum on CentOS 7.

Our Docker is currently locked down so only root can talk to the daemon, so I have to

$ sudo docker run -i --rm \
    -v /tmp/bids/ds005_R1.1.0:/bids_dataset:ro \
    -v /tmp/bids/ds005_R1.1.0/output:/outputs \
    bids:example \
    /bids_dataset /outputs participant --participant_label 01

using the ds005 data set downloaded from the example files today. It runs

bet /bids_dataset/sub-01/anat/sub-01_T1w.nii.gz /outputs/sub-01_brain.nii.gz

and produces

$ ls -l ds005_R1.1.0/output/
total 1216
-rw-r--r-- 1 root root 1242149 Sep  4 15:47 sub-01_brain.nii.gz

I then try to convert the docker image to a Singularity image (this is on a machine in the cluster) using

sudo docker run --privileged -ti --rm \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -v /tmp/singularity:/output docker2singularity \
    bids:example

after first grabbing the filos/docker2singularity Docker bundle and building a local version, setting the Docker version to match ours. That seems to go OK, and produces

$ sudo docker run --privileged -ti --rm \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -v /tmp/singularity:/output docker2singularity \
    bids:example

Size: 1615 MB for the singularity container
Creating a sparse image with a maximum size of 1615MiB...
Using given image size of 1615
Formatting image (/sbin/mkfs.ext3)
Done. Image can be found at: /output/bids_example-2016-09-04-a2e66f1e787d.img

Singularity: sexec (U=0,P=144)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Fixing permissions.
Singularity: sexec (U=0,P=150)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Singularity: sexec (U=0,P=179)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Adding mount points
Singularity: sexec (U=0,P=8600)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Stopping container, please wait.
a2e66f1e787d

However, no combination that I can find produces a run of bet. When running from Docker, the path mapping from the host machine to the container has to be specified on the command line. I am not seeing anything that looks like that in the conversion to singularity or in the singularity invocation. My suspicion is that it's failing because no files are found because /bids_dataset and /output are not getting properly mapped.

Have I done something wrong? Are the tutorial instructions incomplete?

How do we tell the Singularity application where the data and output files are?

Sorry if this is the wrong place to post; I don't see a place to post for text in the tutorial.

[chrisgorgo]

"However, no combination that I can find produces a run of bet."
Could you elaborate? How are you trying to run the singularity image? What
are the results?

On Sun, Sep 4, 2016 at 1:10 PM, justbennet notifications@github.com wrote:

Not sure what is wrong, so the question may be semi-coherent.

I am trying to work through the tutorial at http://bids-apps.neuroimaging.
io/tutorial/

I have Docker version 1.10.3, build d381c64-unsupported as installed by
yum on CentOS 7.

Our Docker is currently locked down so only root can talk to the daemon,
so I have to

$ sudo docker run -i --rm
-v /tmp/bids/ds005_R1.1.0:/bids_dataset:ro
-v /tmp/bids/ds005_R1.1.0/output:/outputs
bids:example
/bids_dataset /outputs participant --participant_label 01

using the ds005 data set downloaded from the example files today. It runs

bet /bids_dataset/sub-01/anat/sub-01_T1w.nii.gz
/outputs/sub-01_brain.nii.gz

and produces

total 1216
-rw-r--r-- 1 root root 1242149 Sep 4 15:47 sub-01_brain.nii.gz

I then try to convert the docker image to a Singularity image (this is on a machine in the cluster) using

sudo docker run --privileged -ti --rm \
-v /var/run/docker.sock:/var/run/docker.sock \
-v /tmp/singularity:/output docker2singularity \
bids:example

after first grabbing the filos/docker2singularity Docker bundle and building a local version, setting the Docker version to match ours.  That seems to go OK, and produces

```$ sudo docker run --privileged -ti --rm \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -v /tmp/singularity:/output docker2singularity \
    bids:example

Size: 1615 MB for the singularity container
Creating a sparse image with a maximum size of 1615MiB...
Using given image size of 1615
Formatting image (/sbin/mkfs.ext3)
Done. Image can be found at: /output/bids_example-2016-09-04-a2e66f1e787d.img

Singularity: sexec (U=0,P=144)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Fixing permissions.
Singularity: sexec (U=0,P=150)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Singularity: sexec (U=0,P=179)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Adding mount points
Singularity: sexec (U=0,P=8600)> Command=exec, Container=/output/bids_example-2016-09-04-a2e66f1e787d.img, CWD=/, Arg1=/bin/sh
Stopping container, please wait.
a2e66f1e787d

However, no combination that I can find produces a run of bet. When
running from Docker, the path mapping from the host machine to the
container has to be specified on the command line. I am not seeing anything
that looks like that in the conversion to singularity or in the singularity
invocation. My suspicion is that it's failing because no files are found
because /bids_dataset and /output are not getting properly mapped.

Have I done something wrong? Are the tutorial instructions incomplete?

How do we tell the Singularity application where the data and output files
are?

Sorry if this is the wrong place to post; I don't see a place to post for
text in the tutorial.

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[justbennet]

Whoops, sorry. Bad copy and paste management.

After I produce the Singularity image using the commands above, and moving the singularity image to the folder that contains d006_R1.1.0, I try, per the Tutorial page, this

./bids_example-2016-09-04-a2e66f1e787d.img \
    /bids_dataset \
    /outputs participant \
    --participant_label 01

No error is generated, but neither is an output.

[chrisgorgo]

Does /bids_dataset folder exists on the host file system and is a root of a
BIDS dataset? Is the installation of singularity on your host configured to
access any folder (I doubt it, most are limited to /scratch and $HOME).

I pushed a version of the example app with a validator built in. This
should give better debug info.

On Sep 4, 2016 6:12 PM, "justbennet" notifications@github.com wrote:

Whoops, sorry. Bad copy and paste management.

After I produce the Singularity image using the commands above, and moving
the singularity image to the folder that contains d006_R1.1.0, I try, per
the Tutorial page, this

./bids_example-2016-09-04-a2e66f1e787d.img
/bids_dataset
/outputs participant
--participant_label 01

No error is generated, but neither is an output.

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[justbennet]

I created /bids_dataset and /outputs, where

$ ls /bids_dataset
CHANGES                   README  sub-04  sub-08  sub-12  sub-16
dataset_description.json  sub-01  sub-05  sub-09  sub-13  task-mixedgamblestask_bold.json
output                    sub-02  sub-06  sub-10  sub-14
participants.tsv          sub-03  sub-07  sub-11  sub-15

Running

sudo /tmp/singularity/bids_example-2016-09-04-a2e66f1e787d.img /bids_dataset /outputs participant --participant_label 01

still does not result in any output.

I can rebuild things tomorrow, and hopefully the additional diagnostics in the new bids-example will shed light on this.

[chrisgorgo]

It's most likely something with your singularity install. Try moving the
bids director somewhere inside your $HOME and try again.

On Sep 4, 2016 7:04 PM, "justbennet" notifications@github.com wrote:

I created /bids_dataset and /outputs, where

$ ls /bids_dataset
CHANGES README sub-04 sub-08 sub-12 sub-16
dataset_description.json sub-01 sub-05 sub-09 sub-13 task-mixedgamblestask_bold.json
output sub-02 sub-06 sub-10 sub-14
participants.tsv sub-03 sub-07 sub-11 sub-15

Running

sudo /tmp/singularity/bids_example-2016-09-04-a2e66f1e787d.img /bids_dataset /outputs participant --participant_label 01

still does not result in any output.

I can rebuild things tomorrow, and hopefully the additional diagnostics in
the new bids-example will shed light on this.

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[justbennet]

The singularity installation is from EPEL via yum.

OK. That seems to have maybe fixed the filesystem. Now I have to go back
an remake the Docker image, as something seems to have gone wrong there:

$ /tmp/singularity/bids_example-2016-09-04-aecc9aa048f3.img
/home/bennet/bids_dataset/d005_R1.1.0 /tmp/bids_output participant
--participant_label 01
bet /home/bennet/bids_dataset/d005_R1.1.0/sub-01/anat/sub-01_T1w.nii.gz
/tmp/bids_output/sub-01_brain.nii.gz
/bin/sh: 1: bet: not found

Traceback (most recent call last):
File "/run.py", line 69, in
run(cmd)
File "/run.py", line 25, in run
raise Exception("Non zero return code: %d"%process.returncode)
Exception: Non zero return code: 127

Enough for one day. Thanks for all your help!

-- bennet

On Sun, Sep 4, 2016 at 10:31 PM, Chris Filo Gorgolewski <
notifications@github.com> wrote:

It's most likely something with your singularity install. Try moving the
bids director somewhere inside your $HOME and try again.

On Sep 4, 2016 7:04 PM, "justbennet" notifications@github.com wrote:

I created /bids_dataset and /outputs, where

$ ls /bids_dataset
CHANGES README sub-04 sub-08 sub-12 sub-16
dataset_description.json sub-01 sub-05 sub-09 sub-13
task-mixedgamblestask_bold.json
output sub-02 sub-06 sub-10 sub-14
participants.tsv sub-03 sub-07 sub-11 sub-15

Running

sudo /tmp/singularity/bids_example-2016-09-04-a2e66f1e787d.img
/bids_dataset /outputs participant --participant_label 01

still does not result in any output.

I can rebuild things tomorrow, and hopefully the additional diagnostics
in
the new bids-example will shed light on this.

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[chrisgorgo]

I could not replicate this. Are you sure the conversion process run without
issue?

On Sun, Sep 4, 2016 at 7:51 PM, justbennet notifications@github.com wrote:

The singularity installation is from EPEL via yum.

OK. That seems to have maybe fixed the filesystem. Now I have to go back
an remake the Docker image, as something seems to have gone wrong there:

$ /tmp/singularity/bids_example-2016-09-04-aecc9aa048f3.img
/home/bennet/bids_dataset/d005_R1.1.0 /tmp/bids_output participant
--participant_label 01
bet /home/bennet/bids_dataset/d005_R1.1.0/sub-01/anat/sub-01_T1w.nii.gz
/tmp/bids_output/sub-01_brain.nii.gz
/bin/sh: 1: bet: not found

Traceback (most recent call last):
File "/run.py", line 69, in
run(cmd)
File "/run.py", line 25, in run
raise Exception("Non zero return code: %d"%process.returncode)
Exception: Non zero return code: 127

Enough for one day. Thanks for all your help!

-- bennet

On Sun, Sep 4, 2016 at 10:31 PM, Chris Filo Gorgolewski <
notifications@github.com> wrote:

It's most likely something with your singularity install. Try moving the
bids director somewhere inside your $HOME and try again.

On Sep 4, 2016 7:04 PM, "justbennet" notifications@github.com wrote:

I created /bids_dataset and /outputs, where

$ ls /bids_dataset
CHANGES README sub-04 sub-08 sub-12 sub-16
dataset_description.json sub-01 sub-05 sub-09 sub-13
task-mixedgamblestask_bold.json
output sub-02 sub-06 sub-10 sub-14
participants.tsv sub-03 sub-07 sub-11 sub-15

Running

sudo /tmp/singularity/bids_example-2016-09-04-a2e66f1e787d.img
/bids_dataset /outputs participant --participant_label 01

still does not result in any output.

I can rebuild things tomorrow, and hopefully the additional diagnostics
in
the new bids-example will shed light on this.

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[justbennet]

Chris,

I unistalled docker from my machine this morning, removed the entire contents of /var/lib/docker, reinstalled docker, and recreated the example container. It runs without error.

$ sudo docker run -ti --rm \
>       -v /tmp/data/ds005_R1.1.0:/bids_dataset:ro \
>       -v /tmp/bids_output:/outputs \
>       example \
>       /bids_dataset /outputs participant --participant_label 01

    1: You should define 'SliceTiming' for this file. If you don't provide this information slice time correction will not be possible. (code: 13)
        /sub-01/func/sub-01_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-04/func/sub-04_task-mixedgamblestask_run-01_bold.nii.gz
        ... and 38 more files having this issue (Use --verbose to see them all).

        Summary:                 Available Tasks:          Available Modalities: 
        133 Files, 1.77GB        mixed-gambles task        T1w                   
        16 - Subjects                                      inplaneT2             
        1 - Session                                        bold                  


bet /bids_dataset/sub-01/anat/sub-01_T1w.nii.gz /outputs/sub-01_brain.nii.gz

Then I run the following command to create the Singularity image.

$ sudo docker run --privileged -ti --rm  \
>       -v /var/run/docker.sock:/var/run/docker.sock \
>       -v /tmp/singularity:/output \
>       filo/docker2singularity \
>       example
Unable to find image 'filo/docker2singularity:latest' locally
latest: Pulling from filo/docker2singularity
e110a4a17941: Pull complete 
49e2842bdfdf: Pull complete 
a2e2c7c833a0: Pull complete 
62fa1d70dc3a: Pull complete 
6628c5827b01: Pull complete 
d2ec67765253: Pull complete 
cc4821134dcf: Pull complete 
c4dcf3de58df: Pull complete 
11f6e4a02f2b: Pull complete 
Digest: sha256:aa5f93023afda10d9e18a88c7a088b7be2228346968ada8919663361a93760ca
Status: Downloaded newer image for filo/docker2singularity:latest
Size: 1615 MB for the singularity container
Creating a sparse image with a maximum size of 1615MiB...
Using given image size of 1615
Formatting image (/sbin/mkfs.ext3)
Done. Image can be found at: /output/example-2016-09-05-6b9e3812277d.img
Singularity: sexec (U=0,P=145)> Command=exec, Container=/output/example-2016-09-05-6b9e3812277d.img, CWD=/, Arg1=/bin/sh
Fixing permissions.
Singularity: sexec (U=0,P=151)> Command=exec, Container=/output/example-2016-09-05-6b9e3812277d.img, CWD=/, Arg1=/bin/sh
Singularity: sexec (U=0,P=180)> Command=exec, Container=/output/example-2016-09-05-6b9e3812277d.img, CWD=/, Arg1=/bin/sh
Adding mount points
Singularity: sexec (U=0,P=8601)> Command=exec, Container=/output/example-2016-09-05-6b9e3812277d.img, CWD=/, Arg1=/bin/sh
Stopping container, please wait.
6b9e3812277d
[bennet@flux-build2 tmp]$ ls /tmp/singularity
example-2016-09-05-6b9e3812277d.img

That seems like it is running without issue. After running that, I run

$ /tmp/singularity/example-2016-09-05-6b9e3812277d.img /home/bennet/bids_dataset/d005_R1.1.0 /home/bennet/bids_output participant --participant_label 01
    1: You should define 'SliceTiming' for this file. If you don't provide this information slice time correction will not be possible. (code: 13)
        /sub-01/func/sub-01_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-04/func/sub-04_task-mixedgamblestask_run-01_bold.nii.gz
        ... and 38 more files having this issue (Use --verbose to see them all).

        Summary:                 Available Tasks:          Available Modalities: 
        133 Files, 1.77GB        mixed-gambles task        T1w                   
        16 - Subjects                                      inplaneT2             
        1 - Session                                        bold                  


bet /home/bennet/bids_dataset/d005_R1.1.0/sub-01/anat/sub-01_T1w.nii.gz /home/bennet/bids_output/sub-01_brain.nii.gz
/bin/sh: 1: bet: not found

Traceback (most recent call last):
  File "/run.py", line 71, in <module>
    run(cmd)
  File "/run.py", line 25, in run
    raise Exception("Non zero return code: %d"%process.returncode)
Exception: Non zero return code: 127

[justbennet]

I modified run.py to print the contents of $PATH and to print the location of bet with which bet. Rerunning the docker container, tells me that

/usr/lib/fsl/5.0:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
which bet
/usr/lib/fsl/5.0/bet

After running the conversion again, it instead prints,

/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin/:/usr/local/sbin/:/usr/lib64/qt-3.3/bin:/opt/moab/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/opt/ibutils/bin:/home/bennet/bin
which bet

So, that tells me that the PATH in the singularity container is the PATH from my shell on the machine running the conversion, not the PATH defined inside the example container.

I start a subshell, export the PATH as shown by running the docker container, then reran the conversion command, and still not joy. I then took a look at /etc/singularity/init, and found that path was getting set there. After a couple of iterations, I discovered that I have to set the PATH there explicitly, and after setting it to the PATH as shown when running from docker, I make some progress, but still get

$ /tmp/singularity/example-2016-09-05-a3ad9bb76289.img /home/bennet/bids_dataset/d005_R1.1.0 /home/bennet/bids_output participant --participant_label 01
    1: You should define 'SliceTiming' for this file. If you don't provide this information slice time correction will not be possible. (code: 13)
        /sub-01/func/sub-01_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-04/func/sub-04_task-mixedgamblestask_run-01_bold.nii.gz
        ... and 38 more files having this issue (Use --verbose to see them all).

        Summary:                 Available Tasks:          Available Modalities: 
        133 Files, 1.77GB        mixed-gambles task        T1w                   
        16 - Subjects                                      inplaneT2             
        1 - Session                                        bold                  


/usr/lib/fsl/5.0:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
which bet
/usr/lib/fsl/5.0/bet

bet /home/bennet/bids_dataset/d005_R1.1.0/sub-01/anat/sub-01_T1w.nii.gz /home/bennet/bids_output/sub-01_brain.nii.gz
/usr/lib/fsl/5.0/bet: 1: /usr/lib/fsl/5.0/bet: /bin/remove_ext: not found
/usr/lib/fsl/5.0/bet: 1: /usr/lib/fsl/5.0/bet: /bin/remove_ext: not found
/usr/lib/fsl/5.0/bet: 1: /usr/lib/fsl/5.0/bet: /bin/imtest: not found
/usr/lib/fsl/5.0/bet: 154: [: =: unexpected operator
/usr/lib/fsl/5.0/bet: 236: /usr/lib/fsl/5.0/bet: /bin/bet2: not found

[justbennet]

This appears to be, at least in part, an issue with Singularity. I will try unistalling the Singularity from the EPEL repo and building it from source.

[chrisgorgo]

Which version of singularity are you using? I believe environment variable
set up (which we use in docker2singularity) was introduced in 2.1.

On Sep 5, 2016 6:41 AM, "justbennet" notifications@github.com wrote:

This appears to be, at least in part, an issue with Singularity. I will
try unistalling the Singularity from the EPEL repo and building it from
source.

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[justbennet]

I was using the singularity installed by

singularity-2.0-9.el7.x86_64.rpm

from the EPEL testing repository. I built a version of singularity from
source, version 2.1.2.

I'll try starting over using that version.

-- bennet

On Mon, Sep 5, 2016 at 9:59 AM, Chris Filo Gorgolewski <
notifications@github.com> wrote:

Which version of singularity are you using? I believe environment variable
set up (which we use in docker2singularity) was introduced in 2.1.

On Sep 5, 2016 6:41 AM, "justbennet" notifications@github.com wrote:

This appears to be, at least in part, an issue with Singularity. I will
try unistalling the Singularity from the EPEL repo and building it from
source.

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[justbennet]

Looks like there was either something wrong with the configuration of the singularity I installed from EPEL, or it may have been too old. After compiling singularity from source, I recreated things, and I now get The Good Stuff.

$ /tmp/singularity/example-2016-09-05-645e068d95b1.img /home/bennet/bids_dataset/d005_R1.1.0 /home/bennet/bids_output participant --participant_label 01
    1: You should define 'SliceTiming' for this file. If you don't provide this information slice time correction will not be possible. (code: 13)
        /sub-01/func/sub-01_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-01/func/sub-01_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-02/func/sub-02_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-01_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-02_bold.nii.gz
        /sub-03/func/sub-03_task-mixedgamblestask_run-03_bold.nii.gz
        /sub-04/func/sub-04_task-mixedgamblestask_run-01_bold.nii.gz
        ... and 38 more files having this issue (Use --verbose to see them all).

        Summary:                 Available Tasks:          Available Modalities: 
        133 Files, 1.77GB        mixed-gambles task        T1w                   
        16 - Subjects                                      inplaneT2             
        1 - Session                                        bold                  


/usr/lib/fsl/5.0:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
which bet
/usr/lib/fsl/5.0/bet

bet /home/bennet/bids_dataset/d005_R1.1.0/sub-01/anat/sub-01_T1w.nii.gz /home/bennet/bids_output/sub-01_brain.nii.gz

[justbennet]

I will close this issue.