[Linux] C Shell (csh) mkfs用法: Create a filesystem on a device

Overview

The mkfs command in C Shell (csh) is used to create a filesystem on a specified device. This command formats the device and prepares it for use, allowing you to store files and directories on it.

Usage

The basic syntax of the mkfs command is as follows:

mkfs [options] [arguments]

Common Options

• -t: Specify the type of filesystem to create (e.g., ext4, vfat).
• -L: Set a label for the filesystem.
• -V: Enable verbose output to see detailed progress and actions.
• -n: Create a filesystem without writing to the device (dry run).

Common Examples

Here are some practical examples of using the mkfs command:

1. Create an ext4 filesystem on a device:

   mkfs -t ext4 /dev/sdb1
   

2. Create a vfat filesystem with a label:

   mkfs -t vfat -L MY_USB /dev/sdc1
   

3. Verbose output while creating an ext3 filesystem:

   mkfs -t ext3 -V /dev/sdd1
   

4. Dry run to see what would happen:

   mkfs -n -t ext4 /dev/sde1
   

Tips

• Always ensure that you have backed up any important data before using mkfs, as it will erase existing data on the device.
• Use the -n option for a dry run to verify your command before executing it.
• Check the device name carefully to avoid formatting the wrong disk. Use commands like lsblk or fdisk -l to list devices.