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Linux Filesystem

Linux Filesystem. WeeSan Lee. Roadmap. Disk Partitions The Filesystem Filesystem Mouting & Umounting File Tree File Type File Permission. Disk Partitions. Logical disk 4 primary partitions Can be extended by extended partition To display $ fdisk –l To partition $ fdisk /dev/sda

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Linux Filesystem

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  1. Linux Filesystem WeeSan Lee

  2. Roadmap • Disk Partitions • The Filesystem • Filesystem Mouting & Umounting • File Tree • File Type • File Permission

  3. Disk Partitions • Logical disk • 4 primary partitions • Can be extended by extended partition • To display • $ fdisk –l • To partition • $ fdisk /dev/sda • m help • p display partition info • n new a partition • d delete a partition • l list known partition type • t change partition id

  4. Filesystem • A method for storing and origanizing files on Linux/Unix • For example • / • bin • usr

  5. Filesystem Mouting & Umounting • To mount a filesystem to a mount point • $ mount /dev/sda2 /import • /etc/fstab • mount –a • To umount a filesystem • $ umount /import • To find who is using the resource • $ fuser –mv /mnt • To find out what’s currently mounted • $ mount • $ cat /etc/mtab

  6. File Tree • /bin • /boot • /dev • /etc • /home • /lib • /root • /sbin • /usr • /usr/local • /var • /tmp • /import

  7. File Type • 7 types • Regular file • $ find -print0 | xargs -0 rm • $ find public_html -size +4M -print0 | xargs -0 ls -l • Directory • . • .. • Character device file • Block device file • Unix socket • Name pipe • Symbol link • $ ln -s old new

  8. File Permission • ls -t -r –h • setuid, setgid, sticky • chown • chgrp • chmod • -rwxrwxrwx • umask

  9. Reference • LAH • Ch 5: The Filesystem

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