sh -x `which xdg-mime` query default image/png

> sh -x `which xdg-mime` query default image/png
+ check_common_commands query default image/png
+ [ 3 -gt 0 ]
+ parm=query
+ shift
+ [ 2 -gt 0 ]
+ parm=default
+ shift
+ [ 1 -gt 0 ]
+ parm=image/png
+ shift
+ [ 0 -gt 0 ]
+ [ -z '' ]
+ unset XDG_UTILS_DEBUG_LEVEL
+ [ 0 -lt 1 ]
+ xdg_redirect_output=' > /dev/null 2> /dev/null'
+ [ xquery != x ]
+ mode=''
+ action=''
+ filename=''
+ mimetype=''
+ shift
+ [ -z default ]
+ action=defapp
+ mimetype=image/png
+ [ -z image/png ]
+ shift
+ [ defapp = makedefault ]
+ [ defapp = info ]
+ [ defapp = defapp ]
+ detectDE
+ [ x = xtrue ]
+ [ xthis-is-deprecated != x ]
+ DE=gnome
+ defapp_generic image/png
+ MIME=image/png
+ xdg_user_dir=''
+ [ -n '' ]
+ xdg_user_dir=/home/kenorb/.local/share
+ xdg_user_dir=/home/kenorb/.local/share/
+ xdg_system_dirs=''
+ [ -n '' ]
+ xdg_system_dirs=/usr/local/share:/usr/local/share/:/usr/share/
+ echo /home/kenorb/.local/share/:/usr/local/share:/usr/local/share/:/usr/share/
+ sed 's/:/ /g'
+ DEBUG 2 'Checking /home/kenorb/.local/share//applications/defaults.list'
+ [ -z '' ]
+ return 0
+ grep image/png= /home/kenorb/.local/share//applications/defaults.list
+ cut -d = -f 2
+ cut -d ';' -f 1
+ trader_result=''
+ [ -n '' ]
+ DEBUG 2 'Checking /usr/local/share/applications/defaults.list'
+ [ -z '' ]
+ return 0
+ grep image/png= /usr/local/share/applications/defaults.list
+ cut -d = -f 2
+ cut -d ';' -f 1
+ trader_result=''
+ [ -n '' ]
+ DEBUG 2 'Checking /usr/local/share//applications/defaults.list'
+ [ -z '' ]
+ return 0
+ grep image/png= /usr/local/share//applications/defaults.list
+ cut -d = -f 2
+ cut -d ';' -f 1
+ trader_result=''
+ [ -n '' ]
+ DEBUG 2 'Checking /usr/share//applications/defaults.list'
+ [ -z '' ]
+ return 0
+ grep image/png= /usr/share//applications/defaults.list
+ cut -d = -f 2
+ cut -d ';' -f 1
+ trader_result=''
+ [ -n '' ]
+ exit_success
+ [ 0 -gt 0 ]
+ exit 0