117笔记问答在Ubuntu中，你可以使用以下几种方法来查看已挂载的设备：
方法一：使用df命令
df命令可以显示文件系统的磁盘空间使用情况，包括已挂载的设备。
df -h
-h选项表示以人类可读的格式显示（例如，MB、GB）。
输出示例：
Filesystem Size Used Avail Use% Mounted on udev 3.9G 0 3.9G 0% /dev tmpfs 798M 1.7M 796M 1% /run /dev/sda1 234G 20G 209G 9% / tmpfs 3.9G 12M 3.9G 1% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/loop0 55M 55M 0 100% /snap/core18/1888 /dev/loop1 30M 30M 0 100% /snap/snapd/8169 /dev/loop2 30M 30M 0 100% /snap/snapd/8240 /dev/loop3 30M 30M 0 100% /snap/snapd/8312 /dev/loop4 30M 30M 0 100% /snap/snapd/8430 /dev/loop5 30M 30M 0 100% /snap/snapd/8506 /dev/loop6 30M 30M 0 100% /snap/snapd/8582 /dev/loop7 30M 30M 0 100% /snap/snapd/8649 /dev/loop8 30M 30M 0 100% /snap/snapd/8715 /dev/loop9 30M 30M 0 100% /snap/snapd/8782 /dev/loop10 30M 30M 0 100% /snap/snapd/8849 /dev/loop11 30M 30M 0 100% /snap/snapd/8915 /dev/loop12 30M 30M 0 100% /snap/snapd/8982 /dev/loop13 30M 30M 0 100% /snap/snapd/9049 /dev/loop14 30M 30M 0 100% /snap/snapd/9115 /dev/loop15 30M 30M 0 100% /snap/snapd/9182 /dev/loop16 30M 30M 0 100% /snap/snapd/9249 /dev/loop17 30M 30M 0 100% /snap/snapd/9315 /dev/loop18 30M 30M 0 100% /snap/snapd/9382 /dev/loop19 30M 30M 0 100% /snap/snapd/9449 /dev/loop20 30M 30M 0 100% /snap/snapd/9515 /dev/loop21 30M 30M 0 100% /snap/snapd/9582 /dev/loop22 30M 30M 0 100% /snap/snapd/9649 /dev/loop23 30M 30M 0 100% /snap/snapd/9715 /dev/loop24 30M 30M 0 100% /snap/snapd/9782 /dev/loop25 30M 30M 0 100% /snap/snapd/9849 /dev/loop26 30M 30M 0 100% /snap/snapd/9915 /dev/loop27 30M 30M 0 100% /snap/snapd/9982 /dev/loop28 30M 30M 0 100% /snap/snapd/10049 /dev/loop29 30M 30M 0 100% /snap/snapd/10115 /dev/loop30 30M 30M 0 100% /snap/snapd/10182 /dev/loop31 30M 30M 0 100% /snap/snapd/10249 /dev/loop32 30M 30M 0 100% /snap/snapd/10315 /dev/loop33 30M 30M 0 100% /snap/snapd/10382 /dev/loop34 30M 30M 0 100% /snap/snapd/10449 /dev/loop35 30M 30M 0 100% /snap/snapd/10515 /dev/loop36 30M 30M 0 100% /snap/snapd/10582 /dev/loop37 30M 30M 0 100% /snap/snapd/10649 /dev/loop38 30M 30M 0 100% /snap/snapd/10715 /dev/loop39 30M 30M 0 100% /snap/snapd/10782 /dev/loop40 30M 30M 0 100% /snap/snapd/10849 /dev/loop41 30M 30M 0 100% /snap/snapd/10915 /dev/loop42 30M 30M 0 100% /snap/snapd/10982 /dev/loop43 30M 30M 0 100% /snap/snapd/11049 /dev/loop44 30M 30M 0 100% /snap/snapd/11115 /dev/loop45 30M 30M 0 100% /snap/snapd/11182 /dev/loop46 30M 30M 0 100% /snap/snapd/11249 /dev/loop47 30M 30M 0 100% /snap/snapd/11315 /dev/loop48 30M 30M 0 100% /snap/snapd/11382 /dev/loop49 30M 30M 0 100% /snap/snapd/11449 /dev/loop50 30M 30M 0 100% /snap/snapd/11515 /dev/loop51 30M 30M 0 100% /snap/snapd/11582 /dev/loop52 30M 30M 0 100% /snap/snapd/11649 /dev/loop53 30M 30M 0 100% /snap/snapd/11715 /dev/loop54 30M 30M 0 100% /snap/snapd/11782 /dev/loop55 30M 30M 0 100% /snap/snapd/11849 /dev/loop56 30M 30M 0 100% /snap/snapd/11915 /dev/loop57 30M 30M 0 100% /snap/snapd/11982 /dev/loop58 30M 30M 0 100% /snap/snapd/12049 /dev/loop59 30M 30M 0 100% /snap/snapd/12115 /dev/loop60 30M 30M 0 100% /snap/snapd/12182 /dev/loop61 30M 30M 0 100% /snap/snapd/12249 /dev/loop62 30M 30M 0 100% /snap/snapd/12315 /dev/loop63 30M 30M 0 100% /snap/snapd/12382 /dev/loop64 30M 30M 0 100% /snap/snapd/12449 /dev/loop65 30M 30M 0 100% /snap/snapd/12515 /dev/loop66 30M 30M 0 100% /snap/snapd/12582 /dev/loop67 30M 30M 0 100% /snap/snapd/12649 /dev/loop68 30M 30M 0 100% /snap/snapd/12715 /dev/loop69 30M 30M 0 100% /snap/snapd/12782 /dev/loop70 30M 30M 0 100% /snap/snapd/12849 /dev/loop71 30M 30M 0 100% /snap/snapd/12915 /dev/loop72 30M 30M 0 100% /snap/snapd/12982 /dev/loop73 30M 30M 0 100% /snap/snapd/13049 /dev/loop74 30M 30M 0 100% /snap/snapd/13115 /dev/loop75 30M 30M 0 100% /snap/snapd/13182 /dev/loop76 30M 30M 0 100% /snap/snapd/13249 /dev/loop77 30M 30M 0 100% /snap/snapd/13315 /dev/loop78 30M 30M 0 100% /snap/snapd/13382 /dev/loop79 30M 30M 0 100% /snap/snapd/13449 /dev/loop80 30M 30M 0 100% /snap/snapd/13515 /dev/loop81 30M 30M 0 100% /snap/snapd/13582 /dev/loop82 30M 30M 0 100% /snap/snapd/13649 /dev/loop83 30M 30M 0 100% /snap/snapd/13715 /dev/loop84 30M 30M 0 100% /snap/snapd/13782 /dev/loop85 30M 30M 0 100% /snap/snapd/13849 /dev/loop86 30M 30M 0 100% /snap/snapd/13915 /dev/loop87 30M 30M 0 100% /snap/snapd/13982 /dev/loop88 30M 30M 0 100%
方法二：使用mount命令
mount命令可以显示当前挂载的所有文件系统。
mount
输出示例：
/dev/sda1 on / type ext4 (rw,relatime,data=https://www.yisu.com/ask/ordered)>