Under Solaris, umount come does not allow a file system to be unmounted if a file on the file system is busy i.e. open by other programs/process or by user. You will get device busy error. To get rid of this message you can pass -f option to umount command. Suppose you would like to forcefully unmount a /cdrom/cdrom0 then you can type following command (login as a root user):
# umount -f /cdrom/cdrom0
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Please note that using this option can cause data loss for open files; program(s) which access files after the file system has been unmounted will get an error.
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| Category | List of Unix and Linux commands |
|---|---|
| File Management | cat |
| Firewall | Alpine Awall • CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04 |
| Network Utilities | dig • host • ip • nmap |
| OpenVPN | CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04 |
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| Searching | grep • whereis • which |
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| WireGuard VPN | CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04 |
The force option is only available on Solaris 8 and above.