will pick a default either via how
the command was run (for example, using a name of the form mkfs.ext2,
mkfs.ext3, etc.) or via a default as defined by the
-.BR /etc/mke2fs.conf (5)
+.B /etc/mke2fs.conf
file. This option controls which filesystem options are used by
default, based on the
.B fstypes
configuration stanza in
-.BR /etc/mke2fs.conf (5).
+.BR /etc/mke2fs.conf .
.sp
If the
.B \-O
.B mke2fs
can choose optimal filesystem parameters for that use. The usage
types that are supported are defined in the configuration file
-.BR /etc/mke2fs.conf (5).
+.BR /etc/mke2fs.conf .
The user may specify one or more usage types
using a comma separated list.
.sp
.BR mke2fs (8).
It controls the default parameters used by
.BR mke2fs (8)
-when it is creating ext2 or ext3 filesystems.
+when it is creating ext2, ext3, or ext4 filesystems.
.PP
The
.I mke2fs.conf