you:~$ cp /var/lib/snapd/snaps/gtk-common-themes_1535.snap ~/ you:~$unsquashfs gtk-common-themes_1535.snap you:~$ cp -rf xxx squashfs-root/share/icons/default/ you:~$ mksquashfs squashfs-root/ gtk-common-themes_1535.snap.n -all-root -comp lzo you:~$ sudo mv gtk-common-themes_1535.snap.n /var/lib/snapd/snaps/gtk-common-themes_1535.snap
you:~$ cp /var/lib/ snapd/snaps/ gtk-common- themes_ 1535.snap ~/ themes_ 1535.snap root/share/ icons/default/ themes_ 1535.snap. n -all-root -comp lzo themes_ 1535.snap. n /var/lib/ snapd/snaps/ gtk-common- themes_ 1535.snap
you:~$unsquashfs gtk-common-
you:~$ cp -rf xxx squashfs-
you:~$ mksquashfs squashfs-root/ gtk-common-
you:~$ sudo mv gtk-common-