debugfs 1.42.13 (17-May-2015)
Available debugfs requests:
show_debugfs_params, params
open_filesys, open Open a filesystem
close_filesys, close Close the filesystem
freefrag, e2freefrag Report free space fragmentation
feature, features Set/print superblock features
dirty_filesys, dirty Mark the filesystem as dirty
init_filesys Initialize a filesystem (DESTROYS DATA)
show_super_stats, stats Show superblock statistics
ncheck Do inode->name translation
icheck Do block->inode translation
change_root_directory, chroot
change_working_directory, cd
list_directory, ls List directory
show_inode_info, stat Show inode information
dump_extents, extents, ex
blocks Dump blocks used by an inode
filefrag Report fragmentation information for an inode
link, ln Create directory link
unlink Delete a directory link
rm Remove a file (unlink and kill_file, if appropriate)
kill_file Deallocate an inode and its blocks
clri Clear an inode's contents
freei Clear an inode's in-use flag
seti Set an inode's in-use flag
testi Test an inode's in-use flag
freeb Clear a block's in-use flag
setb Set a block's in-use flag
testb Test a block's in-use flag
modify_inode, mi Modify an inode by structure
find_free_block, ffb Find free block(s)
find_free_inode, ffi Find free inode(s)
print_working_directory, pwd
Print current working directory
expand_dir, expand Expand directory
mknod Create a special file
list_deleted_inodes, lsdel
undelete, undel Undelete file
write Copy a file from your native filesystem
dump_inode, dump Dump an inode out to a file
cat Dump an inode out to stdout
lcd Change the current directory on your native filesystem
rdump Recursively dump a directory to the native filesystem
set_super_value, ssv Set superblock value
set_inode_field, sif Set inode field
set_block_group, set_bg Set block group descriptor field
logdump Dump the contents of the journal
htree_dump, htree Dump a hash-indexed directory
dx_hash, hash Calculate the directory hash of a filename
dirsearch Search a directory for a particular filename
bmap Calculate the logical->physical block mapping for an inode
punch, truncate Punch (or truncate) blocks from an inode by deallocating them
symlink Create a symbolic link
imap Calculate the location of an inode
dump_unused Dump unused blocks
set_current_time Set current time to use when setting filesystem fields
supported_features Print features supported by this version of e2fsprogs
dump_mmp Dump MMP information
set_mmp_value, smmp Set MMP value
extent_open, eo Open inode for extent manipulation
zap_block, zap Zap block: fill with 0, pattern, flip bits etc.
block_dump, bdump, bd Dump contents of a block
list_quota, lq List quota
inode_dump, idump, id Dump the inode structure in hex
help Display info on command or topic.
list_requests, lr, ? List available commands.
quit, q Leave the subsystem.