[root@oradoc ~]# mount /dev/cdrom /dev/mnt
mount: /dev/sr0 is write-protected,mounting read-only
[root@oradoc ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 3.8G 0 3.8G 0% /dev
tmpfs 3.8G 0 3.8G 0% /dev/shm
tmpfs 3.8G 8.4M 3.8G 1% /run
tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup
/dev/mapper/ol-root 84G 23G 62G 27% /
/dev/sda1 197M 151M 47M 77% /boot
tmpfs 773M 0 773M 0% /run/user/0
/dev/sr0 4.4G 4.4G 0 100% /dev/mnt
[root@oradoc ~]# cd /dev/mnt
[root@oradoc mnt]# ls -lrt
total 1050
drwxr-xr-x. 5 root root 2048 Nov 8 2016 addons
-rw-r--r--. 1 root root 1011 Nov 8 2016 RPM-GPG-KEY-oracle
-rw-r--r--. 1 root root 1011 Nov 8 2016 RPM-GPG-KEY
-rw-r--r--. 1 root root 187067 Nov 8 2016 RELEASE-NOTES-U3-en.html
-rw-r--r--. 1 root root 64277 Nov 8 2016 RELEASE-NOTES-U3-en
-rw-r--r--. 1 root root 18390 Nov 8 2016 GPL
-rw-r--r--. 1 root root 8643 Nov 8 2016 EULA
drwxr-xr-x. 2 root root 776192 Nov 8 2016 Packages
drwxr-xr-x. 2 root root 4096 Nov 8 2016 repodata
drwxr-xr-x. 2 root root 2048 Nov 8 2016 LiveOS
drwxr-xr-x. 3 root root 2048 Nov 8 2016 EFI
drwxr-xr-x. 3 root root 2048 Nov 8 2016 images
-r--r--r--. 1 root root 3322 Nov 8 2016 TRANS.TBL
drwxr-xr-x. 2 root root 2048 Nov 8 2016 isolinux
[root@oradoc mnt]# umount /dev/mnt
umount: /dev/mnt: target is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
[root@oradoc mnt]# fuser -m /dev/mnt
-bash: fuser: command not found
[root@oradoc mnt]# yum install fuser
Loaded plugins: ulninfo
No package fuser available.
Error: Nothing to do
[root@oradoc mnt]# yum provides fuser
Loaded plugins: ulninfo
ol7_addons/x86_64/filelists | 334 kB 00:00:00
psmisc-22.20-8.el7.x86_64 : Utilities for managing processes on your system
Repo : ol7_latest
Matched from:
Filename : /usr/sbin/fuser
psmisc-22.20-9.el7.x86_64 : Utilities for managing processes on your system
Repo : ol7_latest
Matched from:
Filename : /usr/sbin/fuser
psmisc-22.20-11.el7.x86_64 : Utilities for managing processes on your system
Repo : ol7_latest
Matched from:
Filename : /usr/sbin/fuser
psmisc-22.20-15.el7.x86_64 : Utilities for managing processes on your system
Repo : ol7_latest
Matched from:
Filename : /usr/sbin/fuser
[root@oradoc mnt]# yum install psmisc
Loaded plugins: ulninfo
Resolving Dependencies
--> Running transaction check
---> Package psmisc.x86_64 0:22.20-15.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================
Installing:
psmisc x86_64 22.20-15.el7 ol7_latest 140 k
Transaction Summary
=============================================================================================================================================================
Install 1 Package
Total download size: 140 k
Installed size: 475 k
Is this ok [y/d/N]: y
Downloading packages:
psmisc-22.20-15.el7.x86_64.rpm | 140 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : psmisc-22.20-15.el7.x86_64 1/1
Verifying : psmisc-22.20-15.el7.x86_64 1/1
Installed:
psmisc.x86_64 0:22.20-15.el7
Complete!
[root@oradoc mnt]# fuser -m /dev/mnt
/dev/mnt: 2398c
[root@oradoc mnt]# ps -ef | grep 2398
root 2398 2394 0 07:46 pts/0 00:00:00 -bash
root 2438 2398 0 07:49 pts/0 00:00:00 ps -ef
root 2439 2398 0 07:49 pts/0 00:00:00 grep --color=auto 2398
[root@oradoc mnt]#
后面 c 代表的意思可参考下述:
* c: current directory. * e: executable being run. * f: open file. f is omitted in default display mode. * F: open file for writing. F is omitted in default display mode. * r: root directory. * m: mmap'ed file or shared library.
