Used to build a Linux filesystem on a device.
Syntax:
# mkfs [ -V ] [ -t fstype ] [ fsoptions ] FILESYSTEM [ blocks ]
Example:
# mkfs -V -t ext2 -c /dev/hda3
Options:
| -V | verbose |
| [ fsoptions ] | -c check for bad blocks
-l filename file with list of bad blocks -v verbose |
Used to create a Linux second extended file system.
Syntax:
# mke2fs [options ] DEVICE [ block count ]
Example:
# mke2fs -c -v /dev/hda2
Options:
| -c | checks the device for bad blocks before creating filesystem |
| -f fragment size | specifies the size of file fragments in bytes |
| -i bytes per inode | creates a inode for every bytes per inode on the disk, min. = 1024, default = 4096 |
| -l filename | read the filename for a list of bad blocks |
|
-m reserved blocks percentage |
specifies the percentage of blocks reserved for SuperUser, default= 5% |
| -o creator OS | manually overrides default value |
| -q | quiet execution |
| -v | verbose |
| -F | forces mk2fs to run even if the device isn't a block special device |
| -L volume label | sets the filesystem's volume label |
| -M last mounted directory | sets the last mounted directory for the filesystem |
| -r revision | sets the filesystem revision for the filesystem |
| -R RAID options | sets RAID related options for the filesystem |
| -S | Write superblock and group description only |
Makes a swap partition on a partition created with fdisk and marked as type 82.
First you have to create the /swap file and its block size, use the command:
# dd if=/dev/zero of =swapfile bs=1024 count=131073
Syntax:
# mkswap [ -c ] device_size_in_blocks
Example:
# mkswap -c /swap 131073
Next use the sync command and to make the swap file active, use the command:
# swapon /swap
To get rid of the swap file first use the sync command, then issue the command:
# swapoff /swap