212 Part II . Getting Around in Linux (Web hosting faq)
212 Part II . Getting Around in Linux Checking the File System Objective 2.4 Devices, Linux File Systems, Filesystem Hierarchy Standard Maintain the integrity of filesystems. Verify the integrity of filesystems, monitor free space and inodes, fix simple filesystem problems. Includes commands fsck, du, df. You only need to create a file system occasionally; most people configure their partitions and create file systems only once. The ongoing process is maintaining the file system. Linux provides several useful tools for verifying, monitoring, and fixing file systems. In this section we examine the tools used for these purposes: fsck, du, and df. fsck The fsck utility is a file system checker utility that is useful for examining file systems to locate and possibly repair problems that are found. When specifying multiple file systems, the checks are run in parallel, unless you use the -soption to specify that they should be processed serialized. The fsck utility is similar to mkfs in that a different utility is used for each file system. Table 5-6 covers the fsckutilities and their use. Table 5-6 fsck Utilities Utility Use e2fsck or fsck.ext2 Linux ext2 file system checker dosfsck or fsck.msdos MS-DOS file system checker fsck.minix Minix file system checker When running these utilities you can use several options to control the actions taken. Table 5-7 shows the options used with the fsckutilities. Table 5-7 Options Used with fsck Option Use -p Automatically repairs without prompting. -n Makes no changes to the file system.
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