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sysupgrade: say what --kernel, --rootfs, -k and -r take on each layout #2539

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Merged
widgetii merged 1 commit into from
Oct 5, 2026
Merged

sysupgrade: say what --kernel, --rootfs, -k and -r take on each layout #2539

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9 changes: 7 additions & 2 deletions general/overlay/usr/sbin/sysupgrade
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Original file line number Diff line number Diff line change
Expand Up @@ -2414,10 +2414,15 @@ Usage: $0 [options]
Where:
-k Update kernel from online repository.
-r Update rootfs from online repository.
On a UBIFS NAND camera the kernel is inside the
rootfs, so -k and -r both write rootfs.ubifs.
--url=[URL] Custom URL to update from (.tgz format).
--archive=[FILE] Custom archive to update from (.tgz format).
--kernel=[FILE] Update kernel from file (uImage format).
--rootfs=[FILE] Update rootfs from file (squashfs format).
--kernel=[FILE] Update kernel from file (uImage or FIT; zboot.img on
Rockchip). Not on a UBIFS NAND camera: pass the
rootfs.ubifs that carries the kernel with --rootfs.
--rootfs=[FILE] Update rootfs from file (squashfs; rootfs.ubifs on a
UBIFS NAND camera).
--channel=[NAME] Update from a named channel via the manifest
(nightly | latest). Default URL would be used
otherwise.
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