TurboLinux11系统核心软件包-mountpoint

查看一个目录是否为一个挂载点：
[root@test ~]# df 
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda2              9918956   8036580   1370388  86% /
/dev/hda1                99043     20891     73038  23% /boot
/dev/hda5              9612604   6545956   2578352  72% /data
tmpfs                   123444         0    123444   0% /dev/shm
[root@test ~]# mountpoint /
/ is a mountpoint
[root@test ~]# mountpoint /boot
/boot is a mountpoint
[root@test ~]# mountpoint /home/
/home/ is not a mountpoint

而且，还可以查看某个文件系统的主/从设备号：
[root@test ~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda2              9918956   8036580   1370388  86% /
/dev/hda1                99043     20891     73038  23% /boot
/dev/hda5              9612604   6545956   2578352  72% /data
tmpfs                   123444         0    123444   0% /dev/shm
[root@test ~]# mountpoint -d /
3:2
[root@test ~]# mountpoint -d /boot
3:1