$ datalad run -m "Resize logo for slides" \
"convert -resize 400x400 recordings/longnow/.datalad/feed_metadata/logo_salt.jpg recordings/salt_logo_small.jpg"
[INFO] == Command start (output follows) ===== 
convert-im6.q16: unable to open image `recordings/longnow/.datalad/feed_metadata/logo_salt.jpg': No such file or directory @ error/blob.c/OpenBlob/2874.
convert-im6.q16: no images defined `recordings/salt_logo_small.jpg' @ error/convert.c/ConvertImageCommand/3258.
[INFO] == Command exit (modification check follows) ===== 
[INFO] The command had a non-zero exit code. If this is expected, you can save the changes with 'datalad save -d . -r -F .git/COMMIT_EDITMSG' 
CommandError: command 'convert -resize 400x400 recordings/longnow/.datalad/feed_metadata/logo_salt.jpg recordings/salt_logo_small.jpg' failed with exitcode 1
Failed to run 'convert -resize 400x400 recordings/longnow/.datalad/feed_metadata/logo_salt.jpg recordings/salt_logo_small.jpg' under '/home/adina/repos/datalad-handbook/docs/_build/wdirs/dl-101/DataLad-101'. Exit code=1.
