/usr/ is in initramfs-tools-core 0.122ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/initramfs-tools/modules.d/
/usr/sbin/
/usr/sbin/mkinitramfs
/usr/bin/
/usr/share/initramfs-tools/hooks/
/usr/bin/lsinitramfs
/usr/share/
/usr/share/initramfs-tools/
/usr/share/initramfs-tools/modules
/usr/share/initramfs-tools/conf-hooks.d/
/usr/share/initramfs-tools/scripts/
/usr/share/initramfs-tools/scripts/functions
/usr/share/initramfs-tools/scripts/local-premount/
/usr/share/initramfs-tools/scripts/local-premount/fixrtc
/usr/share/initramfs-tools/scripts/local-premount/resume
/usr/share/initramfs-tools/scripts/local
/usr/share/initramfs-tools/scripts/nfs
/usr/share/initramfs-tools/scripts/init-top/
/usr/share/initramfs-tools/scripts/init-top/all_generic_ide
/usr/share/initramfs-tools/scripts/init-top/keymap
/usr/share/initramfs-tools/scripts/init-top/blacklist
/usr/share/initramfs-tools/scripts/init-top/framebuffer
/usr/share/initramfs-tools/init
/usr/share/initramfs-tools/hooks/fixrtc
/usr/share/initramfs-tools/hooks/klibc
/usr/share/initramfs-tools/hooks/busybox
/usr/share/initramfs-tools/hooks/resume
/usr/share/initramfs-tools/hooks/compcache
/usr/share/initramfs-tools/hooks/framebuffer
/usr/share/initramfs-tools/hooks/fsck
/usr/share/initramfs-tools/hooks/thermal
/usr/share/initramfs-tools/conf.d/
/usr/share/initramfs-tools/hook-functions
/usr/share/doc-base/
/usr/share/doc-base/initramfs-maintainer
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/initramfs-tools-core
/usr/share/doc/
/usr/share/doc/initramfs-tools-core/
/usr/share/doc/initramfs-tools-core/examples/
/usr/share/doc/initramfs-tools-core/examples/modules
/usr/share/doc/initramfs-tools-core/examples/example_script
/usr/share/doc/initramfs-tools-core/examples/framebuffer
/usr/share/doc/initramfs-tools-core/examples/example_hook
/usr/share/doc/initramfs-tools-core/HACKING
/usr/share/doc/initramfs-tools-core/maintainer-notes.html
/usr/share/doc/initramfs-tools-core/copyright
/usr/share/man/
/usr/share/man/man8/
/usr/share/man/man8/mkinitramfs.8.gz
/usr/share/man/man8/lsinitramfs.8.gz
/usr/share/man/man8/initramfs-tools.8.gz
/usr/share/man/man5/
/usr/share/man/man5/initramfs.conf.5.gz
/usr/share/doc/initramfs-tools-core/changelog.gz
/usr/share/doc/initramfs-tools-core/NEWS.Debian.gz