Linux基础命令eject的简介
eject是Linux系统中的一个命令,用于弹出光盘驱动器,在Linux系统中,光驱通常被挂载为一个设备文件,如/dev/cdrom或/dev/sr0等,当我们需要从光驱中取出光盘时,可以使用eject命令来实现,需要注意的是,并非所有的Linux发行版都默认安装了eject命令,有些发行版可能使用其他命令(如mount -o remount,umount)来实现类似的功能。
eject的基本用法
要使用eject命令,首先需要找到光驱对应的设备文件,可以通过以下命令查看当前系统已挂载的设备文件:
lsblk
找到光驱对应的设备文件后,可以使用以下命令弹出光盘:
eject /dev/cdrom
或者
eject /dev/sr0
/dev/cdrom和/dev/sr0分别表示CD-ROM驱动器和DVD+R驱动器,需要注意的是,有些光驱可能没有设备文件,这种情况下可以尝试使用sudo权限执行eject命令,
sudo eject /dev/cdrom
eject的高级用法
1、强制弹出光盘
即使我们使用了eject命令,光盘仍然无法弹出,这时可以尝试使用强制弹出的命令:
force-eject /dev/cdrom
或者
force-eject /dev/sr0
2、指定弹出模式
eject命令支持两种弹出模式:正常模式和快速模式,正常模式会等待光盘完全停止旋转后再弹出,而快速模式则会在光盘开始旋转时立即弹出,要指定弹出模式,可以在eject命令后添加-m选项,
eject -m /dev/cdrom
或者
eject -m /dev/sr0
3、显示详细信息
我们需要查看光驱的状态信息,以便了解是否成功弹出光盘,这时可以使用以下命令:
udevadm info --query=all --name=/dev/cdrom | grep ID_CDROM_INTERFACE=CDROM\\|ID_CDROM_MEDIA_TYPE=CD\\|ID_CDROM_READ_STATUS=1\\|ID_CDROM_WRITE_STATUS=1\\|ID_CDROM_LOCKED=1\\|ID_CDROM_LOCKED_BY=1\\|ID_CDROM_MEDIA_CHECKSUM=1\\|ID_CDROM_MULTISESSION=1\\|ID_CDROM_SECTORS=1\\|ID_CDROM_SECTORS_AVAIL=1\\|ID_CDROM_TRACKS=1\|ID_CDROM_TRACKS_AVAIL=1\\|ID_CDROM_LAST_SESSION=1\\|ID_CDROM_LAST_SESSION_UPDATED=1\\|ID_CDROM_LAST_SESSION_EJECTED=1\\|ID_CDROM_LAST_SESSION_TIME=1\|ID_CDROM_LAST_SESSION_MUTE=1\\|ID_CDROM_LAST_SESSION_PAUSE=1\\|ID_CDROM_LAST_SESSION_PLAY=1\\|ID_CDROM_LAST_SESSION_RECORD=1\\|ID_CDROM_LAST_SESSION_REWIND=1\\|ID_CDROM_LAST_SESSION_STOP=1\|ID_CDROM_LAST_SESSION_WAIT=1\\|ID_CDROM_LAST_SESSION_CLOSED=1\\|ID_CDROM_LAST_SESSION_CLOSED_BYEPASS=1\|ID_{CRYPTO}="Crypto"\\|ID_{FILESYSTEM}="Filesystem"\\|ID_{MEDIA}="Media"\\|ID_{MODE}="Mode"\|ID_{POWER}="Power"\\|ID_{SECTORS}="Sectors"\\|ID_{TRACKS}="Tracks"\|ID_{VOLUME}="Volume"|grep "Attached"|grep "device"|grep "media"|grep "state"|grep "status"|grep "type"|grep "used"|grep "unlocked"|grep "write protect"|grep "lockable"|grep "read only"|grep "audio CD"|grep "data CD"|grep "optical disk"|grep "digital audio player"|grep "digital video player"|grep "optical storage device"|grep "optical drive"|grep "optical disc drive"|grep "cd-rom drive"|grep "dvd-rom drive"|grep "dvd+rw drive"|grep "dvd-ram drive"|grep "multisession disk"|grep "audio file system"|grep "video file system"|grep "file system type"|grep "block device file"|grep "partition block device file"|grep "character device file"|grep "named pipe"|grep "socket file"|grep "device node file"|grep "virtual block device file"|grep "virtual character device file"|grep "virtual named pipe file"||sed 's/\t//g' ||sed 's/\r//g' ||sed 's/ //g' ||sed 's/\x0//g' ||sed 's/x1//g' ||sed 's/\x2//g' ||sed 's/\x3//g' ||sed 's/\x4//g' ||sed 's/\x5//g' ||sed 's/\x6//g' ||sed 's/\x7//g' ||sed 's/\x8//g' ||sced 's/x9//g' ||sed 's/\xa//g' ||sed 's/\xb//g' ||sed 's/\xc//g' ||sed 's/\xd//g' ||sed 's/\xe//g'||printf '%b\ ' ${string};echo ${string} | sed 'y/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@$%^&*()-=[]{}|;':a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&*()-=[]{}|;:a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&*()-=[]{}|;:a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&*()-=[]{}|;:a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&*()-=[]{}|;:a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&*()-=[]{}|;:a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z!@$%^&n(?!%)(?![])[^\]]+]| |\r|\f|v|\0|\x[A-Fa-f0-9]{2}|\x[A-Fa-f0-9]{4}|\x[A-Fa-f0-9]{6}|\x[A-Fa-f0-9]{8}|[^ ]+| |\r|\f|\v|\0|\x[A-Fa-f0-9]{2}|\x[A-Fa-f0-9]{4}|\x[A-Fa-f0-9]{6}|\x[A-Fa-
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