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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

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e2image [option] device file

System administration command. Store disaster recovery data for ext2 filesystem on device to image file file. Weekly filesystem images can be an important part of a disaster recovery plan.



Create a raw image file that can be checked and debugged using filesystem utilities such as e2fsck or debugfs. Raw images are created as sparse files. Either compress the image file before moving it, or use the --sparse=always option when copying it with cp.


Handle files that have "holes" (are defined as a certain size, but have less data). always creates a sparse file, auto creates one if the input file is sparse, and never creates a non-sparse file without holes.

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