Filesystem Features

Question 1

Name the four extended attribute flags

Answer 1

immutable, append-only, no-dump, no atime update

Question 2

How can I view extended attributes

Answer 2

lsattr

Question 3

How can I change attributes

Answer 3

chattr

Question 4

How do format a filesystem on a partition

Answer 4

mkfs (sudo mkfs -t ext4 /dev/sda0)

Question 5

How do I check for errors in a filesystem

Answer 5

fsck (sudo fsck -t ext4 /dev/sda1)

Question 6

How do I mount a filesystem

Answer 6

mount (sudo mount -t ext4 /dev/sda1 /home)

Question 7

How do I find the currently mounted filesystems

Answer 7

mount

Question 8

How do I unmount filesystems

Answer 8

umount (sudo umount /home)

Question 9

How do I mount a network share

Answer 9

mount (sudo mount -t nfs myserver.com:/shdir /mnt/shdir)

Question 10

How are filesystems mounted at boot

Answer 10

during boot, mount -a is executed, which reads and mounts all systems isted in /etc/fstab

Question 11

How can I tell the system to automatically mount a filesystem

Answer 11

with a line /etc/fstab (which uses the automount facility in systemd) (LABEL=Sam128 /SAM ext4 noauto,x-systemd.automount,x-systemd.device-timeout=10,x-systemd.idle-timeout=30 0 0)

Question 12

How do I list swap areas

Answer 12

cat /proc/swaps

Question 13

List the swap-related commands

Answer 13

mkswap, swapon, swapoff

Question 14

How do I enable quota

Answer 14

• mount filesystem with usrquota and/or grpquota specified in /etc/fstab (/dev/sda5 /home ext4 defaults, usrquoata 1 2)
• run quaotacheck (sudo quotacheck -vu /home
• enable quotas (sudo quotaon -vu /home)
• set quotas (sudo edquota -u username)

Question 15

How do I examine quotas

Answer 15

sudo quota username

Question 16

How do show filesystem usage

Answer 16

df -hT

Question 17

How do I show disk usage

Answer 17

du -a /etc/continuum