Name
e2fsck
Synopsis
e2fsck [options
]device
fsck.ext2 [options
]device
System administration command. Checks and repairs a disk, as does fsck, but specifically designed for ext2 (Linux Second Extended) and ext3 (Third Extended, a journaling version of ext2) filesystems. fsck actually uses this command when checking ext2 and ext3 filesystems. Most often used after a sudden shutdown, such as from a power outage, or when damage to the disk is suspected.
Options
- -b superblock
Use superblock instead of the default superblock.
- -B size
Expect to find the superblock at size; if it’s not there, exit.
- -c
Find bad blocks using the badblocks command. Specify this option twice to perform the scan with a nondestructive read-write test.
- -C filedescriptor
Write completion information to the specified filedescriptor. If 0, print a completion bar.
- -d
Debugging mode.
- -D
Optimize directories by reindexing, sorting, and compressing them where possible.
- -f
Force checking, even if kernel has already marked the filesystem as valid. e2fsck will normally exit without checking if the system appears to be clean.
- -F
Flush buffer caches before checking.
- -j file
Use the specified external journal file.
- -k
Preserve all previously marked bad blocks when using the -c option.
- -l file
Consult file for a list of bad blocks, in addition to checking for others.
- -L file
Consult file for list of bad blocks instead of checking filesystem for them.
- -n
Ensure that no changes are made to the filesystem. When queried, answer “no.”
- -p
“Preen.” Repair all ...
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