Type the complete command that creates an ext4 filesystem on the partition /dev/sdb1, using default options.
LPIC-1 Exam 101-500, objective 104. Devices, Linux filesystems, filesystem hierarchy standard easy
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Answer
Type the answer.
Accepted answers
mkfs.ext4 /dev/sdb1mkfs -t ext4 /dev/sdb1mkfs --type ext4 /dev/sdb1mkfs --type=ext4 /dev/sdb1mke2fs -t ext4 /dev/sdb1
Case sensitive — Linux is, and grading LS as ls would teach a falsehood.
Why
mkfs is a front end that hands off to a filesystem-specific helper, so `mkfs -t ext4 /dev/sdb1` and `mkfs.ext4 /dev/sdb1` do the same thing. For the ext family the underlying program is mke2fs, and mkfs.ext2, mkfs.ext3 and mkfs.ext4 are all links to it that preset the type. Nothing here asks for the device to be unmounted because it has no filesystem yet — but running mkfs on a mounted filesystem destroys it.
Where this comes from
- Cited
- LPI exam objective 104.1
- What it says
- Create filesystems with the mkfs family of commands.
Practise this
Reading one question is not practice. The trainer will draw a set from objective 104 and space the ones you get wrong.