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badblocks:tldr:c8b78
This command utilizes the badblocks
utility, which is used to search for bad blocks on a storage device such as a hard disk. Here's a breakdown of each part of the command:
-
sudo
: This is a command that allows the user to run a program with administrative privileges. It is usually required for system-level tasks. -
badblocks
: This is the command itself. It is used to scan for bad blocks on a storage device. By default, it reads from the device, performs a non-destructive read-write test, and displays a list of bad blocks found. -
-n
: This is an option for thebadblocks
command. The-n
option specifies that it should perform a non-destructive read-write test. This test writes patterns of data to the blocks and then reads them to check for errors. It does not overwrite the existing data on the device. -
${-dev-sdX}
: This is a placeholder for the device name of the storage device you want to scan. You need to replace${-dev-sdX}
with the actual device name, such as/dev/sda
or/dev/sdb
. It is important to be cautious while using this command, as specifying the wrong device can lead to data loss.
In summary, this command prompts the user to scan a storage device for bad blocks using the badblocks
utility with a non-destructive read-write test. Remember to replace ${-dev-sdX}
with the appropriate device name before executing the command.