2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Linux System Utilities"
13 dmesg is used to examine or control the kernel ring buffer. When the
14 Linux kernel prints messages to the system log, they are stored in
15 the kernel ring buffer. You can use dmesg to print the kernel's ring
16 buffer, clear the kernel ring buffer, change the size of the kernel
17 ring buffer, and change the priority level at which kernel messages
18 are also logged to the system console. Enable this option if you
19 wish to enable the 'dmesg' utility.
25 fbset is used to show or change the settings of a Linux frame buffer
26 device. The frame buffer device provides a simple and unique
27 interface to access a graphic display. Enable this option if you wish
28 to enable the 'fbset' utility.
31 config CONFIG_FEATURE_FBSET_FANCY
32 bool " Turn on extra fbset options"
34 depends on CONFIG_FBSET
36 This option enables extended fbset options, allowing one to set the
37 framebuffer size, color depth, etc. interface to access a graphic
38 display. Enable this option if you wish to enable extended fbset
41 config CONFIG_FEATURE_FBSET_READMODE
42 bool " Turn on fbset readmode support"
44 depends on CONFIG_FBSET
46 This option allows fbset to read the video mode database stored by
47 default as /etc/fb.modes, which can be used to set frame buffer
48 device to pre-defined video modes.
54 Fdflush is only needed when changing media on slightly-broken
55 removable media drives. It is used to make Linux believe that a
56 hardware disk-change switch has been actuated, which causes Linux to
57 forget anything it has cached from the previous media. If you have
58 such a slightly-broken drive, you will need to run fdflush every time
59 you change a disk. Most people have working hardware and can safely
60 say leave this disabled.
62 config CONFIG_FDFORMAT
66 Fdformat is used to low-level format a floppy disk.
72 The fdisk utility is used to divide hard disks into one or more
73 logical disks, which are generally called partitions. This utility
74 can be used to list and edit the set of partitions or BSD style
75 'disk slices' that are defined on a hard drive.
78 config FDISK_SUPPORT_LARGE_DISKS
79 bool " support over 4Gb disks"
81 depends on CONFIG_FDISK
83 Previous set detected unsupport large file, but you can support
84 large disks after enable this option
87 config CONFIG_FEATURE_FDISK_WRITABLE
90 depends on CONFIG_FDISK
92 Enabling this option allows you to create or change a partition table
93 and write those changes out to disk. If you leave this option
94 disabled, you will only be able to view the partition table.
96 config CONFIG_FEATURE_AIX_LABEL
97 bool " Support AIX disklabels"
99 depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
101 Enabling this option allows you to create or change AIX disklabels.
102 Most people can safely leave this option disabled.
104 config CONFIG_FEATURE_SGI_LABEL
105 bool " Support SGI disklabels"
107 depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
109 Enabling this option allows you to create or change SGI disklabels.
110 Most people can safely leave this option disabled.
112 config CONFIG_FEATURE_SUN_LABEL
113 bool " Support SUN disklabels"
115 depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
117 Enabling this option allows you to create or change SUN disklabels.
118 Most people can safely leave this option disabled.
120 config CONFIG_FEATURE_OSF_LABEL
121 bool " Support BSD disklabels"
123 depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
125 Enabling this option allows you to create or change BSD disklabels
126 and define and edit BSD disk slices.
128 config CONFIG_FEATURE_FDISK_ADVANCED
129 bool " Support expert mode"
131 depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
133 Enabling this option allows you to do terribly unsafe things like
134 define arbitrary drive geometry, move the beginning of data in a
135 partition, and similarly evil things. Unless you have a very good
136 reason you would be wise to leave this disabled.
138 config CONFIG_FREERAMDISK
142 Linux allows you to create ramdisks. This utility allows you to
143 delete them and completely free all memory that was used for the
144 ramdisk. For example, if you boot Linux into a ramdisk and later
145 pivot_root, you may want to free the memory that is allocated to the
146 ramdisk. If you have no use for freeing memory from a ramdisk, leave
149 config CONFIG_FSCK_MINIX
153 The minix filesystem is a nice, small, compact, read-write filesystem
154 with little overhead. It is not a journaling filesystem however and
155 can encounted corruption if it is not properly unmounted or if the
156 power goes off in the middle of a write. This utility allows you to
157 check for and attempt to repair any corruption that occurs to a minix
160 config CONFIG_MKFS_MINIX
164 The minix filesystem is a nice, small, compact, read-write filesystem
165 with little overhead. If you wish to be able to create minix filesystems
166 this utility will do the job for you.
168 comment "Minix filesystem support"
169 depends on CONFIG_FSCK_MINIX || CONFIG_MKFS_MINIX
171 config CONFIG_FEATURE_MINIX2
172 bool " Support Minix fs v2 (fsck_minix/mkfs_minix)"
174 depends on CONFIG_FSCK_MINIX || CONFIG_MKFS_MINIX
176 If you wish to be able to create version 2 minix filesystems, enable this.
177 If you enabled 'mkfs_minix' then you almost certainly want to be using the
178 version 2 filesystem support.
184 The getopt utility is used to break up (parse) options in command
185 lines to make it easy to write complex shell scripts that also check
186 for legal (and illegal) options. If you want to write horribly
187 complex shell scripts, or use some horribly complex shell script
188 written by others, this utility may be for you. Most people will
189 wisely leave this disabled.
191 config CONFIG_HEXDUMP
195 The hexdump utility is used to display binary data in a readable
196 way that is comparable to the output from most hex editors.
198 config CONFIG_HWCLOCK
202 The hwclock utility is used to read and set the hardware clock
203 on a system. This is primarily used to set the correct time in
204 the hardware close, so the hardware will keep the correct time
205 when Linux is _not_ running.
207 config CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
208 bool " Support long options (--hctosys,...)"
210 depends on CONFIG_HWCLOCK
212 By default, the hwclock utility only uses short options. If you
213 are overly fond of the long options, such as --hctosys, --utc, etc)
214 then enable this option.
216 config CONFIG_LOSETUP
220 losetup is used to associate or detach a loop device with a regular
221 file or block device, and to query the status of a loop device. This
222 version does not currently support enabling data encryption.
228 The mkswap utility is used to configure a file or disk partition as
229 Linux swap space. This allows Linux to use the entire file or
230 partition as if it were additional RAM, which can greatly increase
231 the capability of low-memory machines. This additional memory is
232 much slower than real RAM, but can be very helpful at preventing your
233 applications being killed by the Linux out of memory (OOM) killer. Once
234 you have created swap space using 'mkswap' you need to enable the swap
235 space using the 'swapon' utility.
241 More is a simple utility which allows you to read text one screen
242 sized page at a time. If you want to read text that is larger than
243 the screen, and you are using anything faster than a 300 baud modem,
244 you will probably find this utility very helpful. If you don't have
245 any need to reading text files, you can leave this disabled.
247 config CONFIG_FEATURE_USE_TERMIOS
248 bool " Use termios to manipulate the screen"
250 depends on CONFIG_MORE
252 This option allows utilities such as 'more' and 'top' to determine
253 the size of the screen. If you leave this disabled, your utilities
254 that display things on the screen with be especially primitive and
255 will be unable to determine the current screen size, and will be
256 unable to move the cursor.
258 config CONFIG_PIVOT_ROOT
262 The pivot_root utility swaps the mount points for the root filesystem
263 with some other mounted filesystem. This allows you to do all sorts
264 of wild and crazy things with your Linux system and is far more
265 powerful than 'chroot'.
271 The rdate utility allows you to syncronize the date and time of your
272 system clock with the date and time of a remote networked system using
273 the RFC868 protocol, which is built into the inetd daemon on most
276 config CONFIG_SWAPONOFF
280 This option enables both the 'swapon' and the 'swapoff' utilities.
281 Once you have created some swap space using 'mkswap', you also need
282 to enable your swap space with the 'swapon' utility. The 'swapoff'
283 utility is used, typically at system shutdown, to disable any swap
284 space. If you are not using any swap space, you can leave this
291 All files and filesystems in Unix are arranged into one big directory
292 tree. The 'mount' utility is used to graft a filesystem onto a
293 particular part of the tree. A filesystem can either live on a block
294 device, or it can be accessible over the network, as is the case with
295 NFS filesystems. Most people using BusyBox will also want to enable
298 config CONFIG_NFSMOUNT
299 bool " Support mounting nfs file systems"
301 depends on CONFIG_MOUNT
303 Enable mounting of NFS file systems.
309 When you want to remove a mounted filesystem from its current mount point,
310 for example when you are shutting down the system, the 'umount' utility is
311 the tool to use. If you enabled the 'mount' utility, you almost certainly
312 also want to enable 'umount'.
314 config CONFIG_FEATURE_MOUNT_FORCE
315 bool " Support forced filesystem unmounting"
317 depends on CONFIG_UMOUNT
319 This allows you to _force_ a filesystem to be umounted. This is generally
320 only useful when you want to get rid of an unreachable NFS system.
322 comment "Common options for mount/umount"
323 depends on CONFIG_MOUNT || CONFIG_UMOUNT
325 config CONFIG_FEATURE_MOUNT_LOOP
326 bool " Support for loop devices"
328 depends on CONFIG_MOUNT || CONFIG_UMOUNT
330 Enabling this feature allows mount to use the '-o' loop options,
331 which lets you loop mount files. Mount will automagically setup and
332 free the necessary loop devices so you do not need to mess with the
333 'losetup' utility unless you really want to. This is really only useful
334 if you plan to loop mount files.
336 config CONFIG_FEATURE_MTAB_SUPPORT
337 bool " Support for a real /etc/mtab (instead of /proc/mounts)"
339 depends on CONFIG_MOUNT || CONFIG_UMOUNT
341 If your root filesystem is writable and you wish to have the 'mount'
342 utility create an mtab file listing the filesystems which have been
343 mounted then you should enable this option. Most people that use
344 BusyBox have a read-only root filesystem, so they will leave this
345 option disabled and BusyBox will use the /proc/mounts file.
347 config CONFIG_FEATURE_MTAB_FILENAME
348 string " mtab file location"
350 depends on CONFIG_FEATURE_MTAB_SUPPORT
352 Some people have a read only root filesystem, but they also wish to
353 have the 'mount' utility create an mtab file listing the filesystems
354 which have been mounted. This option allows you to specify an alternative
355 location for the mtab file, such as /var/mtab, or /tmp/mtab. The default
356 value is /etc/mtab, which is where this file is located on most desktop