 ok 0 - /shared/shared/colourbar.nii.gz Found ok 0 - original fileowner <000> ok 0 - original inode<000000> gunzip -f /shared/shared/colourbar.nii.gz ok 0 - fileowner after gunzip <000> ok 0 - inode after gunzip<000000> gzip -f /shared/shared/colourbar.nii ok 0 - fileowner after gzip <000> ok 0 - inode after gzip<000000>  