LPIC-1CompTIA Linux+ Certification All-in-One Exam Guide (Exams LPIC-1LX0-101 & LX0-102) by Tracy Robb

Author:Tracy, Robb [Tracy, Robb]
Language: eng
Format: mobi
Publisher: McGraw-Hill Education
Published: 2011-09-22T04:00:00+00:00

Accelerated Review

• You must partition and format a disk before you can mount it in the Linux file system.

• The fdisk utility is used to partition disks.

• You have to set the partition type when partitioning disks.

• Partition changes are only saved in memory until you commit them to disk.

• After partitioning a disk, you need to format it with mkfs or mkreiserfs.

• After formatting a disk, you can mount it using the mount command.

• The /etc/mtab file can be used to view mounted file systems.

• You can also use /proc/mounts to view mounted file systems.

• You can unmount a mounted file system using the umount command.

• All file systems must be unmounted before shutting Linux down.

• Mounted file systems won’t be remounted on reboot unless they have an entry in the /etc/fstab file.

• The /etc/fstab file specifies mount points and other options for specific devices.

• You can monitor disk space and inode usage using the df and du utilities.

• The fsck utility is used to check and repair file systems.

• The e2fsck can be used to restore a damaged superblock on ext2/3/4 file systems.

• The tune2fs utility is used to adjust various file system parameters on ext2/3/4 file systems.

• The reiserfstune utility is the Reiser equivalent of the tune2fs utility.

• The dumpe2fs utility can display lots of useful information about ext2/3/4 file system.

• The debugfs utility is an interactive file system debugger.

• The xfs_admin utility is the xfs equivalent of tune2fs.

• The xfs_info utility displays useful information about xfs file systems.

• The xfs_metadump utility dumps xfs file system metadata (such as filenames and sizes) to a file.

• You can use the lsof command at the shell prompt to display a list of open files.

• The fuser command displays the PIDs of processes using the specified files or file systems.

• Removable devices must be mounted in the Linux file system before they can be accessed.

• The mount command can be used to mount floppy diskettes.

• Floppies usually use the vfat file system type.

• The first floppy diskette in your system is /dev/fd0.

• You can use /etc/fstab to automate the process of mounting a floppy.

• You must use umount to unmount a floppy before you can remove it from the system.

• Optical discs must be mounted in the file system before they can be accessed.

• Optical discs are mounted using the iso9660 file system type.

• Optical discs are usually mounted in /media/cdrom, /media/cdrecorder, /media/dvd, or /mnt/cdrom.

• Linux sees USB and FireWire devices as SCSI devices.

• USB and FireWire devices are mounted using mount.

• If you don’t know what type of file system is used on a USB or FireWire device, you can use –t auto to let mount try to determine the correct file system type.

• It is absolutely critical that you regularly back up your system.

• Tape drives are commonly used to back up data.

• Tape drives hold a large amount of data and are relatively inexpensive.

• Tape drives are also slow and tend to wear out.

• Rewritable CDs and DVDs can be used for backups, but they really don’t hold enough information.

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