# # For a description of the syntax of this configuration file, # see scripts/kbuild/config-language.txt. # menu "Linux System Utilities" config BUSYBOX_CONFIG_DMESG bool "dmesg" default y help dmesg is used to examine or control the kernel ring buffer. When the Linux kernel prints messages to the system log, they are stored in the kernel ring buffer. You can use dmesg to print the kernel's ring buffer, clear the kernel ring buffer, change the size of the kernel ring buffer, and change the priority level at which kernel messages are also logged to the system console. Enable this option if you wish to enable the 'dmesg' utility. config BUSYBOX_CONFIG_FBSET bool "fbset" default n help fbset is used to show or change the settings of a Linux frame buffer device. The frame buffer device provides a simple and unique interface to access a graphics display. Enable this option if you wish to enable the 'fbset' utility. config BUSYBOX_CONFIG_FEATURE_FBSET_FANCY bool " Turn on extra fbset options" default n depends on BUSYBOX_CONFIG_FBSET help This option enables extended fbset options, allowing one to set the framebuffer size, color depth, etc. interface to access a graphics display. Enable this option if you wish to enable extended fbset options. config BUSYBOX_CONFIG_FEATURE_FBSET_READMODE bool " Turn on fbset readmode support" default n depends on BUSYBOX_CONFIG_FBSET help This option allows fbset to read the video mode database stored by default n /etc/fb.modes, which can be used to set frame buffer device to pre-defined video modes. config BUSYBOX_CONFIG_FDFLUSH bool "fdflush" default n help fdflush is only needed when changing media on slightly-broken removable media drives. It is used to make Linux believe that a hardware disk-change switch has been actuated, which causes Linux to forget anything it has cached from the previous media. If you have such a slightly-broken drive, you will need to run fdflush every time you change a disk. Most people have working hardware and can safely leave this disabled. config BUSYBOX_CONFIG_FDFORMAT bool "fdformat" default n help fdformat is used to low-level format a floppy disk. config BUSYBOX_CONFIG_FDISK bool "fdisk" default n help The fdisk utility is used to divide hard disks into one or more logical disks, which are generally called partitions. This utility can be used to list and edit the set of partitions or BSD style 'disk slices' that are defined on a hard drive. config BUSYBOX_FDISK_SUPPORT_LARGE_DISKS bool default y depends on BUSYBOX_CONFIG_FDISK help Enable this option to support large disks > 4GB. config BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE bool " Write support" default n depends on BUSYBOX_CONFIG_FDISK help Enabling this option allows you to create or change a partition table and write those changes out to disk. If you leave this option disabled, you will only be able to view the partition table. config BUSYBOX_CONFIG_FEATURE_AIX_LABEL bool " Support AIX disklabels" default n depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE help Enabling this option allows you to create or change AIX disklabels. Most people can safely leave this option disabled. config BUSYBOX_CONFIG_FEATURE_SGI_LABEL bool " Support SGI disklabels" default n depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE help Enabling this option allows you to create or change SGI disklabels. Most people can safely leave this option disabled. config BUSYBOX_CONFIG_FEATURE_SUN_LABEL bool " Support SUN disklabels" default n depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE help Enabling this option allows you to create or change SUN disklabels. Most people can safely leave this option disabled. config BUSYBOX_CONFIG_FEATURE_OSF_LABEL bool " Support BSD disklabels" default n depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE help Enabling this option allows you to create or change BSD disklabels and define and edit BSD disk slices. config BUSYBOX_CONFIG_FEATURE_FDISK_ADVANCED bool " Support expert mode" default n depends on BUSYBOX_CONFIG_FDISK && BUSYBOX_CONFIG_FEATURE_FDISK_WRITABLE help Enabling this option allows you to do terribly unsafe things like define arbitrary drive geometry, move the beginning of data in a partition, and similarly evil things. Unless you have a very good reason you would be wise to leave this disabled. config BUSYBOX_CONFIG_FREERAMDISK bool "freeramdisk" default n help Linux allows you to create ramdisks. This utility allows you to delete them and completely free all memory that was used for the ramdisk. For example, if you boot Linux into a ramdisk and later pivot_root, you may want to free the memory that is allocated to the ramdisk. If you have no use for freeing memory from a ramdisk, leave this disabled. config BUSYBOX_CONFIG_FSCK_MINIX bool "fsck_minix" default n help The minix filesystem is a nice, small, compact, read-write filesystem with little overhead. It is not a journaling filesystem however and can experience corruption if it is not properly unmounted or if the power goes off in the middle of a write. This utility allows you to check for and attempt to repair any corruption that occurs to a minix filesystem. config BUSYBOX_CONFIG_MKFS_MINIX bool "mkfs_minix" default n help The minix filesystem is a nice, small, compact, read-write filesystem with little overhead. If you wish to be able to create minix filesystems this utility will do the job for you. comment "Minix filesystem support" depends on BUSYBOX_CONFIG_FSCK_MINIX || BUSYBOX_CONFIG_MKFS_MINIX config BUSYBOX_CONFIG_FEATURE_MINIX2 bool " Support Minix fs v2 (fsck_minix/mkfs_minix)" default n depends on BUSYBOX_CONFIG_FSCK_MINIX || BUSYBOX_CONFIG_MKFS_MINIX help If you wish to be able to create version 2 minix filesystems, enable this. If you enabled 'mkfs_minix' then you almost certainly want to be using the version 2 filesystem support. config BUSYBOX_CONFIG_GETOPT bool "getopt" default n help The getopt utility is used to break up (parse) options in command lines to make it easy to write complex shell scripts that also check for legal (and illegal) options. If you want to write horribly complex shell scripts, or use some horribly complex shell script written by others, this utility may be for you. Most people will wisely leave this disabled. config BUSYBOX_CONFIG_HEXDUMP bool "hexdump" default y help The hexdump utility is used to display binary data in a readable way that is comparable to the output from most hex editors. config BUSYBOX_CONFIG_HWCLOCK bool "hwclock" default n help The hwclock utility is used to read and set the hardware clock on a system. This is primarily used to set the current time on shutdown in the hardware clock, so the hardware will keep the correct time when Linux is _not_ running. config BUSYBOX_CONFIG_FEATURE_HWCLOCK_LONGOPTIONS bool " Support long options (--hctosys,...)" default n depends on BUSYBOX_CONFIG_HWCLOCK help By default, the hwclock utility only uses short options. If you are overly fond of its long options, such as --hctosys, --utc, etc) then enable this option. config BUSYBOX_CONFIG_LOSETUP bool "losetup" default n help losetup is used to associate or detach a loop device with a regular file or block device, and to query the status of a loop device. This version does not currently support enabling data encryption. config BUSYBOX_CONFIG_MKSWAP bool "mkswap" default n help The mkswap utility is used to configure a file or disk partition as Linux swap space. This allows Linux to use the entire file or partition as if it were additional RAM, which can greatly increase the capability of low-memory machines. This additional memory is much slower than real RAM, but can be very helpful at preventing your applications being killed by the Linux out of memory (OOM) killer. Once you have created swap space using 'mkswap' you need to enable the swap space using the 'swapon' utility. config BUSYBOX_CONFIG_MORE bool "more" default y help more is a simple utility which allows you to read text one screen sized page at a time. If you want to read text that is larger than the screen, and you are using anything faster than a 300 baud modem, you will probably find this utility very helpful. If you don't have any need to reading text files, you can leave this disabled. config BUSYBOX_CONFIG_FEATURE_USE_TERMIOS bool " Use termios to manipulate the screen" default y depends on BUSYBOX_CONFIG_MORE help This option allows utilities such as 'more' and 'top' to determine the size of the screen. If you leave this disabled, your utilities that display things on the screen will be especially primitive and will be unable to determine the current screen size, and will be unable to move the cursor. config BUSYBOX_CONFIG_PIVOT_ROOT bool "pivot_root" default y help The pivot_root utility swaps the mount points for the root filesystem with some other mounted filesystem. This allows you to do all sorts of wild and crazy things with your Linux system and is far more powerful than 'chroot'. config BUSYBOX_CONFIG_RDATE bool "rdate" default y help The rdate utility allows you to synchronize the date and time of your system clock with the date and time of a remote networked system using the RFC868 protocol, which is built into the inetd daemon on most systems. config BUSYBOX_CONFIG_SWAPONOFF bool "swaponoff" default n help This option enables both the 'swapon' and the 'swapoff' utilities. Once you have created some swap space using 'mkswap', you also need to enable your swap space with the 'swapon' utility. The 'swapoff' utility is used, typically at system shutdown, to disable any swap space. If you are not using any swap space, you can leave this option disabled. config BUSYBOX_CONFIG_MOUNT bool "mount" default y help All files and filesystems in Unix are arranged into one big directory tree. The 'mount' utility is used to graft a filesystem onto a particular part of the tree. A filesystem can either live on a block device, or it can be accessible over the network, as is the case with NFS filesystems. Most people using BusyBox will also want to enable the 'mount' utility. config BUSYBOX_FEATURE_MOUNT_NFS bool " Support mounting NFS file systems" default y depends on BUSYBOX_CONFIG_MOUNT help Enable mounting of NFS file systems. config BUSYBOX_CONFIG_UMOUNT bool "umount" default y help When you want to remove a mounted filesystem from its current mount point, for example when you are shutting down the system, the 'umount' utility is the tool to use. If you enabled the 'mount' utility, you almost certainly also want to enable 'umount'. config BUSYBOX_CONFIG_FEATURE_MOUNT_FORCE bool " Support forced filesystem unmounting" default y depends on BUSYBOX_CONFIG_UMOUNT help This allows you to _force_ a filesystem to be umounted. This is generally only useful when you want to get rid of an unreachable NFS system. comment "Common options for mount/umount" depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT config BUSYBOX_CONFIG_FEATURE_MOUNT_LOOP bool " Support for loop devices" default y depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT help Enabling this feature allows mount to use the '-o' loop options, which lets you loop mount files. Mount will automagically setup and free the necessary loop devices so you do not need to mess with the 'losetup' utility unless you really want to. This is really only useful if you plan to loop mount files. config BUSYBOX_CONFIG_FEATURE_MTAB_SUPPORT bool " Support for a real /etc/mtab (instead of /proc/mounts)" default n depends on BUSYBOX_CONFIG_MOUNT || BUSYBOX_CONFIG_UMOUNT help If your root filesystem is writable and you wish to have the 'mount' utility create an mtab file listing the filesystems which have been mounted then you should enable this option. Most people that use BusyBox have a read-only root filesystem, so they will leave this option disabled and BusyBox will use the /proc/mounts file. config BUSYBOX_CONFIG_FEATURE_MTAB_FILENAME string " mtab file location" default n depends on BUSYBOX_CONFIG_FEATURE_MTAB_SUPPORT help Some people have a read only root filesystem, but they also wish to have the 'mount' utility create an mtab file listing the filesystems which have been mounted. This option allows you to specify an alternative location for the mtab file, such as /var/mtab, or /tmp/mtab. The default value is /etc/mtab, which is where this file is located on most desktop Linux systems. endmenu