Hello,

this patch fix the absolute path for /bin/cat and is required to set thumbnail image for user in GNOME desktop.

Debug error:

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1) gnome-control-center -v
2) try changing the user's thumbnail.

00:25:56.0336           AccountsService:  WARNING: SetIconFile call failed: GDBus.Error:org.freedesktop.Accounts.Error.Failed: reading file '/gnu/store/k159736sj00s0jkirkr2270nlx6sx6h2-gnome-control-center-3.32.2/share/pixmaps/faces/mountain.jpg' failed: Failed to execute child process “/bin/cat” (No such file or directory)
--

Thanks
Rene