A Linux system administrator needs to check an ext4 filesystem for errors and attempt to repair any issues found on an unmounted partition. Which of the following commands is the primary utility for this task?
fdisk
parted
fsck
mkfs
The fsck (file system consistency check) command is the standard utility used to check and repair filesystem errors on Linux. It is a front-end for various filesystem-specific checkers (e.g., e2fsck for ext4). The fdisk and parted commands are used for managing disk partitions, not for checking the integrity of the data within a filesystem. The mkfs command is used to create a new filesystem on a partition, which would destroy any existing data.
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