{"id":6636,"date":"2024-01-07T11:21:12","date_gmt":"2024-01-07T18:21:12","guid":{"rendered":"https:\/\/ioflood.com\/blog\/?p=6636"},"modified":"2024-01-07T11:23:36","modified_gmt":"2024-01-07T18:23:36","slug":"install-lsblk-command-linux","status":"publish","type":"post","link":"https:\/\/ioflood.com\/blog\/install-lsblk-command-linux\/","title":{"rendered":"Installing ‘lsblk’ Command | Linux Disk Monitoring Guide"},"content":{"rendered":"
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Are you struggling with monitoring disk spaces in Linux? Like a vigilant watchman, the ‘lsblk’ command in Linux can help you keep track of your block devices. The ‘lsblk’ command is readily available on most package management systems, making it a straightforward process once you understand the steps. Whether you’re using Debian and Ubuntu for APT package management or CentOS and AlmaLinux for YUM package manager, this guide has got you covered.<\/p>\n

In this comprehensive guide, we will walk you through the process of installing and using the ‘lsblk’ command in Linux.<\/strong> We will delve into advanced topics like compiling from source and installing a specific version of the command. Finally, we will wrap up with guidance on how to use the command and verify the correct version is installed.<\/p>\n

So, let’s dive in and start mastering disk monitoring by installing the ‘lsblk’ command in Linux!<\/p>\n

TL;DR: How Do I Install and Use the ‘lsblk’ Command in Linux?<\/h2>\n

\n In most Linux distributions, the 'lsblk'<\/code> command comes pre-installed, you can verify this with lsblk --version<\/code>. However, if it is not installed to your system, you can add it via the ‘util-linux’ package with, sudo apt-get install util-linux<\/code> or sudo yum install util-linux<\/code>.\n<\/p><\/blockquote>\n

To use it, simply type the following command in your terminal and press Enter:<\/p>\n

lsblk\n<\/code><\/pre>\n
This command will display information about all your block devices, including their names, types, mount points, and sizes. Here’s an example of what you might see:<\/p>\n
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT\nsda      8:0    0 931.5G  0 disk \nsda1   8:1    0   512M  0 part \/boot\/efi\nsda2   8:2    0   931G  0 part \/\n<\/code><\/pre>\n
In this output, ‘sda’ is the name of a disk, ‘sda1’ and ‘sda2’ are its partitions, and ‘\/boot\/efi’ and ‘\/’ are their mount points.<\/p>\n
This is just a basic way to use the ‘lsblk’ command in Linux, but there’s much more to learn about this powerful tool. Continue reading for more detailed information and advanced usage scenarios.<\/p>\n
Understanding and Installing the ‘lsblk’ Command<\/h2>\n
The ‘lsblk’ command in Linux is a utility that provides information about all the block devices on your system. Block devices include hard drives, SSDs, and their partitions, USB drives, and more. The ‘lsblk’ command helps you monitor these devices, which is especially useful for system administrators managing storage resources.<\/p>\n
Installing ‘lsblk’ with APT<\/h3>\n
On Debian-based systems like Ubuntu, you can use the Advanced Package Tool (APT) to install ‘lsblk’. However, in most cases, ‘lsblk’ comes pre-installed. Here’s how you can verify if ‘lsblk’ is already installed on your system:<\/p>\n
lsblk --version\n<\/code><\/pre>\n
# Output:\n# lsblk from util-linux 2.36.1\n<\/code><\/pre>\n
If ‘lsblk’ is not installed, you can install it with the ‘util-linux’ package using the following command:<\/p>\n
sudo apt-get install util-linux\n<\/code><\/pre>\n
Installing ‘lsblk’ with YUM<\/h3>\n
On Red Hat-based systems like CentOS, you can use the Yellowdog Updater, Modified (YUM) to install ‘lsblk’. Similar to APT, ‘lsblk’ is often pre-installed. You can verify its presence or install it with the ‘util-linux’ package as follows:<\/p>\n
sudo yum install util-linux\n<\/code><\/pre>\n
Installing ‘lsblk’ with Zypper<\/h3>\n
On SUSE Linux distributions, you can use the Zypper package manager to install ‘lsblk’. As with the other distributions, ‘lsblk’ usually comes pre-installed. If it’s not, you can install it with the ‘util-linux’ package as follows:<\/p>\n
sudo zypper install util-linux\n<\/code><\/pre>\n
After installation, you can use the ‘lsblk’ command to display a list of all block devices, along with their names, types, sizes, and mount points. In the next section, we’ll dive deeper into how to use the ‘lsblk’ command in Linux.<\/p>\n
Installing ‘lsblk’ Command from Source Code<\/h2>\n
If you need the latest features or bug fixes, you might want to install ‘lsblk’ from source code. The source code is usually available on the official website or a trusted repository like GitHub. Here’s how you can do it:<\/p>\n
# Download the source code\nwget https:\/\/github.com\/karelzak\/util-linux\/archive\/refs\/tags\/v2.37.tar.gz\n\n# Extract the tarball\n tar -xvf v2.37.tar.gz\n\n# Change to the directory\n cd util-linux-2.37\/\n\n# Configure the source code\n.\/configure\n\n# Compile the code\nmake\n\n# Install the program\nsudo make install\n<\/code><\/pre>\n
This will install the latest version of ‘lsblk’ on your system. You can verify the installation using the ‘–version’ flag:<\/p>\n
lsblk --version\n<\/code><\/pre>\n
Installing Different Versions of ‘lsblk’<\/h2>\n
From Source<\/h3>\n
To install a specific version of ‘lsblk’, you need to download the corresponding source code. You can find the source code for all versions on the official website or GitHub repository. Replace ‘v2.37’ in the wget command with the version number you want.<\/p>\n
Using Package Managers<\/h3>\n
APT<\/h4>\n
On Debian-based systems, you can install a specific version of a package using the following syntax:<\/p>\n
sudo apt-get install util-linux=2.36.1-7\n<\/code><\/pre>\n
Replace ‘2.36.1-7’ with the version number you want.<\/p>\n
YUM<\/h4>\n
On Red Hat-based systems, you can list all available versions of a package using the following command:<\/p>\n
yum --showduplicates list util-linux\n<\/code><\/pre>\n
You can then install a specific version using the following syntax:<\/p>\n
sudo yum install util-linux-2.36.1-7.el8\n<\/code><\/pre>\n
Replace ‘2.36.1-7.el8’ with the version number you want.<\/p>\n
Version Comparison<\/h3>\n
Different versions of ‘lsblk’ come with various features, bug fixes, and compatibility updates. Here’s a summary of some key changes:<\/p>\n\n\n\n\n\n\n\n
Version<\/th>\nKey Changes<\/th>\n<\/tr>\n<\/thead>\n
2.37<\/td>\nAdded support for new file systems<\/td>\n<\/tr>\n
2.36<\/td>\nFixed bugs in display of block devices<\/td>\n<\/tr>\n
2.35<\/td>\nImproved compatibility with older Linux kernels<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Using the ‘lsblk’ Command<\/h2>\n
Basic Usage<\/h3>\n
You can list all block devices with their sizes in a human-readable format using the ‘-b’ and ‘-H’ flags:<\/p>\n
lsblk -b -H\n<\/code><\/pre>\n
This will display the sizes in bytes, which can be useful for scripts or other automated tasks.<\/p>\n
Verifying the Installation<\/h3>\n
You can verify the correct installation of ‘lsblk’ using the ‘–version’ flag:<\/p>\n
lsblk --version\n<\/code><\/pre>\n
This will display the version number of ‘lsblk’, which should match the version you installed.<\/p>\n
Alternative Disk Monitoring Methods in Linux<\/h2>\n
While ‘lsblk’ is a powerful tool for monitoring disk spaces in Linux, it’s not the only one. There are other commands, such as ‘df’ and ‘du’, which you can use to manage your disk spaces efficiently. Let’s explore these alternatives.<\/p>\n
Using the ‘df’ Command<\/h3>\n
The ‘df’ command, short for disk free, is a built-in Linux command that displays the amount of disk space used and available on filesystems. Here’s how you can use it:<\/p>\n
df -h\n<\/code><\/pre>\n
# Output:\n# Filesystem      Size  Used Avail Use% Mounted on\n# udev            3.9G     0  3.9G   0% \/dev\n# tmpfs           797M  1.9M  795M   1% \/run\n# \/dev\/sda2       454G  180G  250G  42% \/\n<\/code><\/pre>\n
The ‘-h’ flag makes the output human-readable by displaying sizes in ‘K’, ‘M’, ‘G’ instead of in blocks.<\/p>\n
Using the ‘du’ Command<\/h3>\n
The ‘du’ command, short for disk usage, is another built-in Linux command that estimates file and directory space usage. Here’s how you can use it:<\/p>\n
du -sh \/home\/user\n<\/code><\/pre>\n
# Output:\n# 4.2G    \/home\/user\n<\/code><\/pre>\n
The ‘-s’ flag summarizes the total size of the specified directory, and the ‘-h’ flag makes the output human-readable.<\/p>\n
Comparing ‘lsblk’, ‘df’, and ‘du’<\/h3>\n
While ‘lsblk’, ‘df’, and ‘du’ can all help you monitor disk spaces in Linux, they serve different purposes and provide different information. Here’s a comparison:<\/p>\n\n\n\n\n\n\n\n
Command<\/th>\nInformation Provided<\/th>\nUse Case<\/th>\n<\/tr>\n<\/thead>\n
lsblk<\/td>\nBlock devices and their attributes<\/td>\nWhen you need detailed information about all block devices<\/td>\n<\/tr>\n
df<\/td>\nDisk space usage of filesystems<\/td>\nWhen you want to check the disk space usage of your filesystems<\/td>\n<\/tr>\n
du<\/td>\nDisk space usage of directories and files<\/td>\nWhen you want to find out the disk space taken up by specific directories or files<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
In conclusion, while ‘lsblk’ is a powerful command for monitoring disk spaces in Linux, ‘df’ and ‘du’ are also valuable tools that you can use depending on your specific needs.<\/p>\n
Troubleshooting ‘lsblk’ Command Issues<\/h2>\n
While ‘lsblk’ is a reliable tool, you may encounter some issues while using it. Let’s discuss common problems and their solutions.<\/p>\n
‘lsblk’ Command Not Found<\/h3>\n
This is the most common issue. If ‘lsblk’ is not installed, or if its path is not included in the PATH environment variable, you’ll see a ‘command not found’ error. Here’s an example:<\/p>\n
lsblk\n<\/code><\/pre>\n
# Output:\n# bash: lsblk: command not found\n<\/code><\/pre>\n
To resolve this, you can install ‘lsblk’ using your package manager as we discussed earlier. If ‘lsblk’ is installed but its path is not included in the PATH variable, you can add it using the following command:<\/p>\n
export PATH=$PATH:\/path\/to\/lsblk\n<\/code><\/pre>\n
Replace ‘\/path\/to\/lsblk’ with the actual path to ‘lsblk’. You can find this path using the ‘which’ command:<\/p>\n
which lsblk\n<\/code><\/pre>\n
Errors in ‘lsblk’ Output<\/h3>\n
Sometimes, ‘lsblk’ might display errors or warnings in its output. These are usually due to problems with the block devices themselves, not with ‘lsblk’. Here’s an example:<\/p>\n
lsblk\n<\/code><\/pre>\n
# Output:\n# lsblk: \/dev\/sda: not a block device\n<\/code><\/pre>\n
In this case, ‘\/dev\/sda’ is not recognized as a block device. You can check the device’s status using the ‘dmesg’ command:<\/p>\n
dmesg | grep sda\n<\/code><\/pre>\n
This will display the kernel messages related to ‘sda’, which can help you troubleshoot the issue.<\/p>\n
Remember, understanding the ‘lsblk’ command and its potential issues will help you effectively monitor disk spaces in Linux. Stay tuned for more advanced topics and related concepts.<\/p>\n
Understanding Block Devices in Linux<\/h2>\n
Before diving deeper into the ‘lsblk’ command, it’s crucial to understand what block devices are in Linux. A block device is a type of device you can read from or write to in blocks of data. Examples include hard drives, SSDs, and USB drives. The ‘lsblk’ command provides information about these block devices.<\/p>\n
lsblk\n<\/code><\/pre>\n
# Output:\n# NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT\n# sda      8:0    0 931.5G  0 disk \n# sda1   8:1    0   512M  0 part \/boot\/efi\n# sda2   8:2    0   931G  0 part \/\n<\/code><\/pre>\n
In the output, ‘sda’ is a disk, and ‘sda1’ and ‘sda2’ are its partitions. Each block device has a major and minor number (‘MAJ:MIN’), which the system uses to identify it.<\/p>\n
Importance of Monitoring Disk Spaces in Linux<\/h2>\n
Monitoring disk spaces in Linux is crucial for several reasons. It allows you to:<\/p>\n