OS Manuals

ostree-admin-init-fs(1)

OSTREE ADMIN INIT-F(1) ostree admin init-fs OSTREE ADMIN INIT-F(1)


.SH "NAME" ostree-admin-init-fs - Initialize a new root filesystem


.SH "SYNOPSIS"


.HP 504u


ostree admin init-fs [OPTIONS...] {PATH}


.SH "DESCRIPTION"


.PP Initialize an empty physical root filesystem in the designated PATH, with normal toplevels and correct permissions for each directory. Primarily useful for operating system installers.


.SH "OPTIONS"


.PP --modern


Equivalent to --epoch=1.


.RE


.PP --epoch


This accepts an integer value in the range [0-1], inclusive. The default is zero for compatibility.


When set to 1, the command will skip adding a number of toplevel "API filesystems" such as /proc to the toplevel of the physical root. These should be unnecessary, as they should only be mounted in the final deployment root. The main exception is /boot, which may need to be mounted in some setups before the target root.


Epoch 2 is the same as 1, except that the toplevel ostree directory is mode 0700, denying access from unprivileged code. This is a new recommended best practice as it avoids access to old configuration files in /etc in previous deployments, as well as potentially old setuid binaries in /ostree/repo.


.RE


.SH "EXAMPLE"


.PP $ mkdir /example


.PP $ ostree admin init-fs --epoch=1 /example


.PP $ ls /example


.PP boot  

OSTree

ostree 2026.6-r0 · enterprise-packages · ingested 2026-10-31