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