ejact Command

NAME

       eject - eject removable media

SYNOPSIS

       eject -h

       eject [-vnrsfmqp] [<name>]

       eject [-vn] -d

       eject [-vn] -a on|off|1|0 [<name>]

       eject [-vn] -c slot [<name>]

       eject [-vn] -i on|off|1|0 [<name>]

       eject [-vn] -t [<name>]

       eject [-vn] -T [<name>]

       eject [-vn] -x <speed> [<name>]

       eject [-vn] -X [<name>]

       eject -V

DESCRIPTION

       Eject allows removable media (typically a CD-ROM, floppy disk, tape, or JAZ or ZIP disk) to be

ejected under software control. The command  can also  control  some  multi-disc CD-ROM changers, the auto-eject feature supported by some devices, and close  the  disc  tray  of  some  CD-ROM drives.        The device corresponding to <name> is ejected. The name can be a device file or mount point, either a full path or  with  the  leading  "/dev",  "/media"  or  "/mnt" omitted. If no name is specified, the default name "cdrom" is used.

       There are four different methods of ejecting, depending on whether  the device  is a CD-ROM, SCSI device, removable floppy, or tape. By default eject tries all four methods in order until it succeeds.        If the device is currently mounted, it is unmounted before ejecting.

COMMAND-LINE OPTIONS

       -h                          This option causes eject to display a  brief  description  of  the command options.

       -v              This  makes  eject  run  in verbose mode; more information is displayed about what the command is doing.

       -d                          If invoked with this option, eject lists the default device  name.

       -a on|1|off|0      This  option  controls  the  auto-eject  mode,  supported  by some devices.  When enabled, the drive automatically  ejects  when  the device is closed.

       -c <slot>          With  this  option a CD slot can be selected from an ATAPI/IDE CD-ROM changer. Linux 2.0 or higher is required to use this  feature. The  CD-ROM  drive can not be in use (mounted data CD or playing a  music CD) for a change request to work. Please also note that the           first slot of the changer is referred to as 0, not 1.

       -i on|1|off|0       This  option  controls  locking of the hardware eject button. When enabled, the drive will not be ejected when the button is pressed. This is useful when you are carrying a laptop in a bag or case and don’t want it to eject if the button is inadvertently pressed.

       -n                          With this option the selected device is displayed but no action is performed.

       -r                          This option specifies that the drive should  be  ejected  using a CDROM eject command.

       -s                          This  option specifies that the drive should be ejected using SCSI commands.

       -f                           This option specifies that the drive should  be  ejected  using  a removable floppy disk eject command.

       -q                          This  option  specifies  that  the drive should be ejected using a tape drive offline command.

       -p                          This option allow you to use /proc/mounts  instead  /etc/mtab.  It also passes the -n option to umount.

      -m                          This  option  allows eject to work with device drivers which automatically mount removable  media  and  therefore  must  be  always mount(1)ed.   The  option  tells  eject  to not try to unmount the given device, even if it is  mounted  according  to  /etc/mtab or /proc/mounts.

       -V                          This  option causes eject to display the program version and exit.

LONG OPTIONS

       All options have corresponding long names, as listed  below.  The  long names can be abbreviated as long as they are unique.

       -h --help

       -v --verbose

       -d --default

       -a --auto

       -c --changerslot

       -t --trayclose

       -T --traytoggle

       -x --cdspeed

       -X --listspeed

       -n --noop

       -r –cdrom

       -s --scsi

       -f --floppy

       -q --tape

       -V --version

       -p --proc

       -m --no-unmount

EXAMPLES

       Eject the default device:                          eject

       Eject a device or mount point named cdrom: eject cdrom  

       Eject using device name:                                   eject /dev/cdrom

       Eject using mount point:                          eject /mnt/cdrom/

       Eject 4th IDE device:                                          eject hdd

       Eject first SCSI device:                           eject sda

       Eject using SCSI partition name (e.g. a ZIP drive):    eject sda4

       Select 5th disc on multi-disc changer:          eject -v -c4 /dev/cdrom

       Turn on auto-eject on a SoundBlaster CD-ROM drive:    eject -a on /dev/sbpcd

EXIT STATUS

       Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid.

NOTES

       Eject only works with devices that support one  or  more  of  the  four methods  of  ejecting. This includes most CD-ROM drives (IDE, SCSI, and proprietary), some SCSI tape drives, JAZ drives, ZIP  drives  (parallel port, SCSI, and IDE versions), and LS120 removable floppies. Users have also reported success with floppy drives on Sun SPARC and Apple  Macintosh systems. If eject does not work, it is most likely a limitation of the kernel driver for the device and not the eject program itself.

       The -r, -s, -f, and -q options allow controlling which methods are used to  eject.  More  than  one  method  can be specified. If none of these options are specified, it tries all  four  (this  works  fine  in  most cases).

       Eject  may  not  always  be  able to determine if the device is mounted (e.g. if it has several names). If the device name is a symbolic  link, eject will follow the link and use the device that it points to. If  eject  determines  that the device can have multiple partitions, it will attempt to unmount all mounted partitions  of  the  device  before ejecting.  If  an  unmount fails, the program will not attempt to eject the media.

       You can eject an audio CD. Some CD-ROM drives will refuse to  open  the tray  if the drive is empty. Some devices do not support the tray close command.

       If the auto-eject feature is enabled, then the  drive  will  always  be ejected after running this command. Not all Linux kernel CD-ROM drivers support the auto-eject mode. There is no way to find out the  state  of the auto-eject mode.

       You  need appropriate privileges to access the device files. Running as root or setuid root is  required  to  eject  some  devices  (e.g.  SCSI devices).

       The  heuristic  used  to find a device, given a name, is as follows. If the name ends in a trailing slash, it is removed (this  is  to  support filenames  generated  using  shell  file  name completion). If the name starts with ’.’ or ’/’, it tries to open it as a device file  or  mount point.  If that fails, it tries prepending ’/dev/’, ’/media/’ ,’/mnt/’, ’/dev/cdroms’, ’/dev/rdsk/’, ’/dev/dsk/’, and finally ’./’ to the name, until  a  device  file  or mount point is found that can be opened. The program checks /etc/mtab for mounted devices. If that  fails,  it  also checks /etc/fstab for mount points of currently unmounted devices.

       Creating  symbolic  links such as /dev/cdrom or /dev/zip is recommended so that eject can determine the appropriate devices using easily remembered names.

       To  save typing you can create a shell alias for the eject options that work for your particular setup.