🖥️dumpe2fs

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the dumpe2fs command with important options and switches using examples.

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# Dump information about ext2/3/4 file systems

# Begins with info on Mount path, Inode count etc.
# Then lists the block group information - free inodes etc.
dumpe2fs /dev/sdb1 | less

# Print the blocks which are reserved as bad in the filesystem
dumpe2fs -b /dev/sda2 

# Use  the block superblock when examining the filesystem
dumpe2fs -o superblock=superblock /dev/sda1 

# Use blocks of blocksize bytes when examining the filesystem.
dumpe2fs -o blocksize=blocksize /dev/sda1 

# Force dumpe2fs to display a filesystem
dumpe2fs -f /dev/sda1 

# Only display the superblock information
dumpe2fs -h 

# Display the filesystem data from an image file created by e2image
dumpe2fs -i 

# Print the detailed group information block numbers in hexadecimal format
dumpe2fs -x

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command dumpe2fs in a clear format. This allows users to quickly access the needed information for dumpe2fs without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for dumpe2fs are a valuable resource to work efficiently and purposefully.

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