2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
12 basename is used to strip the directory and suffix from filenames,
13 leaving just the filename itself. Enable this option if you wish
14 to enable the 'basename' utility.
20 cal is used to display a monthly calender.
26 cat is used to concatenate files and print them to the standard
27 output. Enable this option if you wish to enable the 'cat' utility.
33 chgrp is used to change the group ownership of files.
39 chmod is used to change the access permission of files.
45 chown is used to change the user and/or group ownership
52 chroot is used to change the root directory and run a command.
53 The default command is `/bin/sh'.
59 cmp is used to compare two files and returns the result
66 comm is used to compare two files line by line and return
67 a three-column output.
73 cp is used to copy files and directories.
79 cut is used to print selected parts of lines from
86 date is used to set the system date or display the
87 current time in the given format.
89 config CONFIG_FEATURE_DATE_ISOFMT
90 bool " Enable ISO date format output (-I)"
92 depends on CONFIG_DATE
94 Enable option (-I) to output an ISO-8601 compliant
101 dd copies a file (from standard input to standard output,
102 by default) using specific input and output blocksizes,
103 while optionally performing conversions on it.
109 df reports the amount of disk space used and available
116 diff compares two files or directories and outputs the
117 differences between them in a form that can be given to
120 config CONFIG_FEATURE_DIFF_BINARY
121 bool " Enable checks for binary files"
123 depends on CONFIG_DIFF
125 This option enables support for checking for binary files
126 before a comparison is carried out.
128 config CONFIG_FEATURE_DIFF_DIR
129 bool " Enable directory support"
131 depends on CONFIG_DIFF
133 This option enables support for directory and subdirectory
136 config CONFIG_FEATURE_DIFF_MINIMAL
137 bool " Enable -d option to find smaller sets of changes"
139 depends on CONFIG_DIFF
141 Enabling this option allows the use of -d to make diff
142 try hard to find the smallest possible set of changes.
144 config CONFIG_DIRNAME
148 dirname is used to strip a non-directory suffix from
151 config CONFIG_DOS2UNIX
152 bool "dos2unix/unix2dos"
155 dos2unix is used to convert a text file from DOS format to
156 UNIX format, and vice versa.
158 config CONFIG_UNIX2DOS
161 depends on CONFIG_DOS2UNIX
164 bool "du (default blocksize of 512 bytes)"
167 du is used to report the amount of disk space used
170 config CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
171 bool " Use a default blocksize of 1024 bytes (1K)"
175 Use a blocksize of (1K) instead of the default 512b.
178 bool "echo (basic SuSv3 version taking no options)"
181 echo is used to print a specified string to stdout.
183 # this entry also appears in shell/Config.in, next to the echo builtin
184 config CONFIG_FEATURE_FANCY_ECHO
185 bool " Enable echo options (-n and -e)"
187 depends on CONFIG_ECHO
189 This adds options (-n and -e) to echo.
195 env is used to set an environment variable and run
196 a command; without options it displays the current
203 expr is used to calculate numbers and print the result
206 config CONFIG_EXPR_MATH_SUPPORT_64
207 bool " Extend Posix numbers support to 64 bit"
209 depends on CONFIG_EXPR
211 Enable 64-bit math support in the expr applet. This will make
212 the applet slightly larger, but will allow computation with very
219 false returns an exit code of FALSE (1).
225 Wrap text to fit a specific width.
231 head is used to print the first specified number of lines
234 config CONFIG_FEATURE_FANCY_HEAD
235 bool " Enable head options (-c, -q, and -v)"
237 depends on CONFIG_HEAD
239 This enables the head options (-c, -q, and -v).
245 hostid prints the numeric identifier (in hexadecimal) for
252 id displays the current user and group ID names.
254 config CONFIG_INSTALL
258 Copy files and set attributes.
264 length is used to print out the length of a specified string.
270 ln is used to create hard or soft links between files.
272 config CONFIG_LOGNAME
276 logname is used to print the current user's login name.
282 ls is used to list the contents of directories.
284 config CONFIG_FEATURE_LS_FILETYPES
285 bool " Enable filetyping options (-p and -F)"
289 Enable the ls options (-p and -F).
291 config CONFIG_FEATURE_LS_FOLLOWLINKS
292 bool " Enable symlinks dereferencing (-L)"
296 Enable the ls option (-L).
298 config CONFIG_FEATURE_LS_RECURSIVE
299 bool " Enable recursion (-R)"
303 Enable the ls option (-R).
305 config CONFIG_FEATURE_LS_SORTFILES
306 bool " Sort the file names"
310 Allow ls to sort file names alphabetically.
312 config CONFIG_FEATURE_LS_TIMESTAMPS
313 bool " Show file timestamps"
317 Allow ls to display timestamps for files.
319 config CONFIG_FEATURE_LS_USERNAME
320 bool " Show username/groupnames"
324 Allow ls to display username/groupname for files.
326 config CONFIG_FEATURE_LS_COLOR
327 bool " Allow use of color to identify file types"
331 This enables the --color option to ls.
333 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
334 bool " Produce colored ls output by default"
336 depends on CONFIG_FEATURE_LS_COLOR
338 Saying yes here will turn coloring on by default,
339 even if no "--color" option is given to the ls command.
340 This is not recommended, since the colors are not
341 configurable, and the output may not be legible on
348 md5sum is used to print or check MD5 checksums.
354 mkdir is used to create directories with the specified names.
360 mkfifo is used to create FIFOs (named pipes).
361 The `mknod' program can also create FIFOs.
367 mknod is used to create FIFOs or block/character special
368 files with the specified names.
374 mv is used to move or rename files or directories.
380 nice runs a program with modified scheduling priority.
386 run a command immune to hangups, with output to a non-tty.
392 od is used to dump binary files in octal and other formats.
394 config CONFIG_PRINTENV
398 printenv is used to print all or part of environment.
404 printf is used to format and print specified strings.
405 It's similar to `echo' except it has more options.
411 pwd is used to print the current directory.
413 config CONFIG_REALPATH
417 Return the canonicalized absolute pathname.
418 This isn't provided by GNU shellutils, but where else does it belong.
424 rm is used to remove files or directories.
430 rmdir is used to remove empty directories.
436 print a sequence of numbers
438 config CONFIG_SHA1SUM
442 Compute and check SHA1 message digest
445 bool "sleep (single integer arg with no suffix)"
448 sleep is used to pause for a specified number of seconds,
450 config CONFIG_FEATURE_FANCY_SLEEP
451 bool " Enable multiple integer args and optional time suffixes"
453 depends on CONFIG_SLEEP
455 Allow sleep to pause for specified minutes, hours, and days.
461 sort is used to sort lines of text in specified files.
463 config CONFIG_FEATURE_SORT_BIG
464 bool " full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
466 depends on CONFIG_SORT
468 Without this, sort only supports -r, -u, and an integer version
469 of -n. Selecting this adds sort keys, floating point support, and
470 more. This adds a little over 3k to a nonstatic build on x86.
472 The SuSv3 sort standard is available at:
473 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
479 display file or filesystem status.
481 config CONFIG_FEATURE_STAT_FORMAT
482 bool " Enable custom formats (-c)"
484 depends on CONFIG_STAT
486 Without this, stat will not support the '-c format' option where
487 users can pass a custom format string for output. This adds about
488 7k to a nonstatic build on amd64.
494 stty is used to change and print terminal line settings.
500 checksum and count the blocks in a file
506 sync is used to flush filesystem buffers.
512 tail is used to print the last specified number of lines
515 config CONFIG_FEATURE_FANCY_TAIL
516 bool " Enable extra tail options (-q, -s, and -v)"
518 depends on CONFIG_TAIL
520 The options (-q, -s, and -v) are provided by GNU tail, but
521 are not specific in the SUSv3 standard.
527 tee is used to read from standard input and write
528 to standard output and files.
530 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
531 bool " Enable block i/o (larger/faster) instead of byte i/o."
533 depends on CONFIG_TEE
535 Enable this option for a faster tee, at expense of size.
541 test is used to check file types and compare values,
542 returning an appropriate exit code. The shells (ash
543 and bash) have test builtin.
545 config CONFIG_FEATURE_TEST_64
546 bool " Extend test to 64 bit"
548 depends on CONFIG_TEST
550 Enable 64-bit support in test.
556 touch is used to create or change the access and/or
557 modification timestamp of specified files.
563 tr is used to squeeze, and/or delete characters from standard
564 input, writing to standard output.
566 config CONFIG_FEATURE_TR_CLASSES
567 bool " Enable character classes (such as [:upper:])"
571 Enable character classes, enabling commands such as:
572 tr [:upper:] [:lower:] to convert input into lowercase.
574 config CONFIG_FEATURE_TR_EQUIV
575 bool " Enable equivalence classes"
579 Enable equivalence classes, which essentially add the enclosed
580 character to the current set. For instance, tr [=a=] xyz would
581 replace all instances of 'a' with 'xyz'. This option is mainly
582 useful for cases when no other way of expressing a character
589 true returns an exit code of TRUE (0).
595 tty is used to print the name of the current terminal to
602 uname is used to print system information.
608 uniq is used to remove duplicate lines from a sorted file.
614 usleep is used to pause for a specified number of microseconds.
616 config CONFIG_UUDECODE
620 uudecode is used to decode a uuencoded file.
622 config CONFIG_UUENCODE
626 uuencode is used to uuencode a file.
633 watch is used to execute a program periodically, showing
634 output to the screen.
640 wc is used to print the number of bytes, words, and lines,
646 select CONFIG_FEATURE_UTMP
648 who is used to show who is logged on.
654 whoami is used to print the username of the current
655 user id (same as id -un).
661 yes is used to repeatedly output a specific string, or
662 the default string `y'.
664 comment "Common options for cp and mv"
665 depends on CONFIG_CP || CONFIG_MV
667 config CONFIG_FEATURE_PRESERVE_HARDLINKS
668 bool " Preserve hard links"
670 depends on CONFIG_CP || CONFIG_MV
672 Allow cp and mv to preserve hard links.
674 comment "Common options for ls, more and telnet"
675 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
677 config CONFIG_FEATURE_AUTOWIDTH
678 bool " Calculate terminal & column widths"
680 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
682 This option allows utilities such as 'ls', 'more' and 'telnet'
683 to determine the width of the screen, which can allow them to
684 display additional text or avoid wrapping text onto the next line.
685 If you leave this disabled, your utilities will be especially
686 primitive and will be unable to determine the current screen width.
688 comment "Common options for df, du, ls"
689 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
691 config CONFIG_FEATURE_HUMAN_READABLE
692 bool " Support for human readable output (example 13k, 23M, 235G)"
694 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
696 Allow df, du, and ls to have human readable output.
698 comment "Common options for md5sum, sha1sum"
699 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
701 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
702 bool " Enable -c, -s and -w options"
704 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
706 Enabling the -c options allows files to be checked
707 against pre-calculated hash values.
709 -s and -w are useful options when verifying checksums.