How to Check if a Filesystem is Mounted in Linux
The OS(operating system) employs the file system which is known as the file system in a computer language that is commonly abbreviated to “fs”. The “fs” is a technique that regulates how well the piece of information is protected and accessed. Without a file system, the content of the file in a memory device would not distinguish between one type of information. The information can be easily extracted and recognized by making the groups and assigning each group a name. Each group of information is referred to as a “file,” which is a terminology derived from a paper-based data management system. A “file system” is the term referring to both the organizational framework and logical principles that are used to handle the names and groupings of information.
Different Techniques of Checking the Filesystem Mounted Type in Linux
There are many different file system varieties in Linux that will provide several terminal commands and techniques to check the filesystem mounted type in Linux. Let us just start delving and fully understanding how well the filesystem functions in terms of understanding the various filesystem varieties in Linux and how we are going to execute each method one at a time.
Prerequisite: Installing util-linux
To use the root privileges of accessing the different types of file systems in Linux, we will first write the “sudo” keyword in the Linux terminal. Then, we will write the “apt” which will upgrade the deb packages. To access the mounted files system in the Linux, we use different steps to install the “util-linux” as seen below:
After writing the “sudo” command, we first have to enter the password of the Linux then it will show further details.
After installing the “util-linux”, now we can easily apply the different techniques to check the filesystem mounted type.
Technique 01: The “fsck” Command
The Linux command fsck stands for File System Consistency Check which analyzes filesystems for faults or unresolved problems.
The instruction employed to produce statistics and correct potential problems is written below:
To get additional information on the “fsck” statement, use the “man fsck” statement. Following is the full command:
Technique 02: The “mount” Command
The “mount” statement will provide all the mounted devices along with the filesystem format and mounted location in Linux.
To get the mounted filesystem’s type, we will write first the “mount” keyword along with “grep” so that we can only get those mounted files that we want to display. This is why we have provided the “^/dev” path.
To understand more clearly about the “mount” command, write the below INSTRUCTION:
Technique 03: The “findmnt” Command
Now, we are going to implement another technique to check the filesystem type which is “findmnt” statements in Linux. In the findmnt statement, it will show all the mounted filesystems in the device.
The “findmnt” statement returns the target, source, and fstype which means file system type and the options which contain whether the file is read/write or read-only. At the top of the tree of the filesystem, it will be the root directory and here it is “ext4”.
If you want to dig deeper into the understanding of the “findmnt” command:
Here is the detailed information about the “findmnt” command which was open on another Linux man terminal page. If you want to go back to the man terminal page, you have to press “q” to exit the “man findmnt” terminal.
Technique 04: The “file” Command
The “file” statement, which is employed to verify the kind of a certain file, is a further technique we will employ in the filesystems in Linux.
Below is a different example where we are checking the different filesystems while giving the different filesystems paths.
Write the following command on the terminal and hit enter if you want further information:
Technique 05: The “blkid” Command
The “blkid” statement is another technique of the filesystem in Linux which is used to find and print the block device’s information.
To access the information of blocked devices, we will simply write the blkid command in the terminal.
As shown in the terminal, we have gotten the information along with the type of the filesystem.
In the “blkid” command, if we want to display the information of the specific device, then we will write the path of the device which we want to get after writing the “sudo blkid” in the terminal.
We can access the “man” page of the “blkid” phrase in Linux and view additional details about it by typing the command below.
Technique 06: The “df” Command
Here is another technique to figure out the overall disc space and free space on a Linux filesystem, by utilizing the “df” command in the terminal.
Let us just learn how to examine the quantity of free space still available in the Linux filesystem using the “df” statement. As you see below, we have got the filesystem which is the name of the mounted filesystem and it will also display the type. The “1k-blocks” is the size that is represented in one-kilo blocks and the free and used storage of the mounted filesystem.
We shall type the man df statement on the terminal to obtain extra knowledge about the “df” statement:
Technique 07: The “fstab” Command
This technique will hold the static information of the filesystem in Linux.
We first write the “cat” command so that we can access the filesystem information and then we write the path /etc/fstab.
The following command can be used to dig deeply into the “fstab” statement:
Technique 08: The “lsblk” Command
The “lsblk” technique is utilized to show data on block devices, which except for RAM discs, are essentially files that indicate linked devices.
We have used “-f” in the command so that we can represent the arguments of the files.
Use the command below to see the additional information on the “lsblk” statement:
Technique 09: The “udevadm” Command
The udevadm command is one of the techniques which we are going to use to check the filesystem type. The udev library is queried for device information using the udevadm command. But it also contains information about the filesystem type in Linux.
To check the file system type, the very first command we are going to use is the “udevadm” command in the Linux terminal. Write the following command in the Linux terminal:
We have used the above command to query the database for the desired file type of device data with the “—query” statement. If we simply write the “udevadm –query”, the terminal will show us a lengthy output. This is why we have to use the “grep” statement that will show the necessary information to determine the file system type by further writing the “/dev/sda1” path.
To get further details about the “udevadm” command in the Linux, we will use the “man” command in the Linux terminal:
The udevadm command will be opened into a new terminal of the Linux as shown below in the snapshot:
We have learned what is filesystem and how to check the type of mounted filesystem in Linux. We have discussed the different techniques of the mounted filesystem by writing every command of the filesystem type in the Linux terminal.