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.
29 config CONFIG_FEATURE_CAT_ESCAPE
40 chgrp is used to change the group ownership of files.
46 chmod is used to change the access permission of files.
52 chown is used to change the user and/or group ownership
59 chroot is used to change the root directory and run a command.
60 The default command is `/bin/sh'.
66 cksum is used to calculate the CRC32 checksum of a file.
72 cmp is used to compare two files and returns the result
79 comm is used to compare two files line by line and return
80 a three-column output.
86 cp is used to copy files and directories.
92 cut is used to print selected parts of lines from
99 date is used to set the system date or display the
100 current time in the given format.
102 config CONFIG_FEATURE_DATE_ISOFMT
103 bool "Enable ISO date format output (-I)"
105 depends on CONFIG_DATE
107 Enable option (-I) to output an ISO-8601 compliant
114 dd copies a file (from standard input to standard output,
115 by default) using specific input and output blocksizes,
116 while optionally performing conversions on it.
122 df reports the amount of disk space used and available
129 diff compares two files or directories and outputs the
130 differences between them in a form that can be given to
133 config CONFIG_FEATURE_DIFF_BINARY
134 bool "Enable checks for binary files"
136 depends on CONFIG_DIFF
138 This option enables support for checking for binary files
139 before a comparison is carried out.
141 config CONFIG_FEATURE_DIFF_DIR
142 bool "Enable directory support"
144 depends on CONFIG_DIFF
146 This option enables support for directory and subdirectory
149 config CONFIG_FEATURE_DIFF_MINIMAL
150 bool "Enable -d option to find smaller sets of changes"
152 depends on CONFIG_DIFF
154 Enabling this option allows the use of -d to make diff
155 try hard to find the smallest possible set of changes.
157 config CONFIG_DIRNAME
161 dirname is used to strip a non-directory suffix from
164 config CONFIG_DOS2UNIX
165 bool "dos2unix/unix2dos"
168 dos2unix is used to convert a text file from DOS format to
169 UNIX format, and vice versa.
171 config CONFIG_UNIX2DOS
174 depends on CONFIG_DOS2UNIX
177 bool "du (default blocksize of 512 bytes)"
180 du is used to report the amount of disk space used
183 config CONFIG_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
184 bool "Use a default blocksize of 1024 bytes (1K)"
188 Use a blocksize of (1K) instead of the default 512b.
191 bool "echo (basic SuSv3 version taking no options)"
194 echo is used to print a specified string to stdout.
196 # this entry also appears in shell/Config.in, next to the echo builtin
197 config CONFIG_FEATURE_FANCY_ECHO
198 bool "Enable echo options (-n and -e)"
200 depends on CONFIG_ECHO
202 This adds options (-n and -e) to echo.
208 env is used to set an environment variable and run
209 a command; without options it displays the current
216 expr is used to calculate numbers and print the result
219 config CONFIG_EXPR_MATH_SUPPORT_64
220 bool "Extend Posix numbers support to 64 bit"
222 depends on CONFIG_EXPR
224 Enable 64-bit math support in the expr applet. This will make
225 the applet slightly larger, but will allow computation with very
232 false returns an exit code of FALSE (1).
238 Wrap text to fit a specific width.
244 head is used to print the first specified number of lines
247 config CONFIG_FEATURE_FANCY_HEAD
248 bool "Enable head options (-c, -q, and -v)"
250 depends on CONFIG_HEAD
252 This enables the head options (-c, -q, and -v).
258 hostid prints the numeric identifier (in hexadecimal) for
265 id displays the current user and group ID names.
267 config CONFIG_INSTALL
271 Copy files and set attributes.
277 length is used to print out the length of a specified string.
283 ln is used to create hard or soft links between files.
285 config CONFIG_LOGNAME
289 logname is used to print the current user's login name.
295 ls is used to list the contents of directories.
297 config CONFIG_FEATURE_LS_FILETYPES
298 bool "Enable filetyping options (-p and -F)"
302 Enable the ls options (-p and -F).
304 config CONFIG_FEATURE_LS_FOLLOWLINKS
305 bool "Enable symlinks dereferencing (-L)"
309 Enable the ls option (-L).
311 config CONFIG_FEATURE_LS_RECURSIVE
312 bool "Enable recursion (-R)"
316 Enable the ls option (-R).
318 config CONFIG_FEATURE_LS_SORTFILES
319 bool "Sort the file names"
323 Allow ls to sort file names alphabetically.
325 config CONFIG_FEATURE_LS_TIMESTAMPS
326 bool "Show file timestamps"
330 Allow ls to display timestamps for files.
332 config CONFIG_FEATURE_LS_USERNAME
333 bool "Show username/groupnames"
337 Allow ls to display username/groupname for files.
339 config CONFIG_FEATURE_LS_COLOR
340 bool "Allow use of color to identify file types"
344 This enables the --color option to ls.
346 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
347 bool "Produce colored ls output by default"
349 depends on CONFIG_FEATURE_LS_COLOR
351 Saying yes here will turn coloring on by default,
352 even if no "--color" option is given to the ls command.
353 This is not recommended, since the colors are not
354 configurable, and the output may not be legible on
361 md5sum is used to print or check MD5 checksums.
367 mkdir is used to create directories with the specified names.
373 mkfifo is used to create FIFOs (named pipes).
374 The `mknod' program can also create FIFOs.
380 mknod is used to create FIFOs or block/character special
381 files with the specified names.
387 mv is used to move or rename files or directories.
393 nice runs a program with modified scheduling priority.
399 run a command immune to hangups, with output to a non-tty.
405 od is used to dump binary files in octal and other formats.
407 config CONFIG_PRINTENV
411 printenv is used to print all or part of environment.
417 printf is used to format and print specified strings.
418 It's similar to `echo' except it has more options.
424 pwd is used to print the current directory.
426 config CONFIG_REALPATH
430 Return the canonicalized absolute pathname.
431 This isn't provided by GNU shellutils, but where else does it belong.
437 rm is used to remove files or directories.
443 rmdir is used to remove empty directories.
449 print a sequence of numbers
451 config CONFIG_SHA1SUM
455 Compute and check SHA1 message digest
458 bool "sleep (single integer arg with no suffix)"
461 sleep is used to pause for a specified number of seconds,
463 config CONFIG_FEATURE_FANCY_SLEEP
464 bool "Enable multiple integer args and optional time suffixes"
466 depends on CONFIG_SLEEP
468 Allow sleep to pause for specified minutes, hours, and days.
474 sort is used to sort lines of text in specified files.
476 config CONFIG_FEATURE_SORT_BIG
477 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
479 depends on CONFIG_SORT
481 Without this, sort only supports -r, -u, and an integer version
482 of -n. Selecting this adds sort keys, floating point support, and
483 more. This adds a little over 3k to a nonstatic build on x86.
485 The SuSv3 sort standard is available at:
486 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
492 display file or filesystem status.
494 config CONFIG_FEATURE_STAT_FORMAT
495 bool "Enable custom formats (-c)"
497 depends on CONFIG_STAT
499 Without this, stat will not support the '-c format' option where
500 users can pass a custom format string for output. This adds about
501 7k to a nonstatic build on amd64.
507 stty is used to change and print terminal line settings.
513 checksum and count the blocks in a file
519 sync is used to flush filesystem buffers.
525 tail is used to print the last specified number of lines
528 config CONFIG_FEATURE_FANCY_TAIL
529 bool "Enable extra tail options (-q, -s, and -v)"
531 depends on CONFIG_TAIL
533 The options (-q, -s, and -v) are provided by GNU tail, but
534 are not specific in the SUSv3 standard.
540 tee is used to read from standard input and write
541 to standard output and files.
543 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
544 bool "Enable block i/o (larger/faster) instead of byte i/o."
546 depends on CONFIG_TEE
548 Enable this option for a faster tee, at expense of size.
554 test is used to check file types and compare values,
555 returning an appropriate exit code. The shells (ash
556 and bash) have test builtin.
558 config CONFIG_FEATURE_TEST_64
559 bool "Extend test to 64 bit"
561 depends on CONFIG_TEST
563 Enable 64-bit support in test.
569 touch is used to create or change the access and/or
570 modification timestamp of specified files.
576 tr is used to squeeze, and/or delete characters from standard
577 input, writing to standard output.
579 config CONFIG_FEATURE_TR_CLASSES
580 bool "Enable character classes (such as [:upper:])"
584 Enable character classes, enabling commands such as:
585 tr [:upper:] [:lower:] to convert input into lowercase.
587 config CONFIG_FEATURE_TR_EQUIV
588 bool "Enable equivalence classes"
592 Enable equivalence classes, which essentially add the enclosed
593 character to the current set. For instance, tr [=a=] xyz would
594 replace all instances of 'a' with 'xyz'. This option is mainly
595 useful for cases when no other way of expressing a character
602 true returns an exit code of TRUE (0).
608 tty is used to print the name of the current terminal to
615 uname is used to print system information.
621 uniq is used to remove duplicate lines from a sorted file.
627 usleep is used to pause for a specified number of microseconds.
629 config CONFIG_UUDECODE
633 uudecode is used to decode a uuencoded file.
635 config CONFIG_UUENCODE
639 uuencode is used to uuencode a file.
646 watch is used to execute a program periodically, showing
647 output to the screen.
653 wc is used to print the number of bytes, words, and lines,
659 select CONFIG_FEATURE_UTMP
661 who is used to show who is logged on.
667 whoami is used to print the username of the current
668 user id (same as id -un).
674 yes is used to repeatedly output a specific string, or
675 the default string `y'.
677 comment "Common options for cp and mv"
678 depends on CONFIG_CP || CONFIG_MV
680 config CONFIG_FEATURE_PRESERVE_HARDLINKS
681 bool "Preserve hard links"
683 depends on CONFIG_CP || CONFIG_MV
685 Allow cp and mv to preserve hard links.
687 comment "Common options for ls, more and telnet"
688 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
690 config CONFIG_FEATURE_AUTOWIDTH
691 bool "Calculate terminal & column widths"
693 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
695 This option allows utilities such as 'ls', 'more' and 'telnet'
696 to determine the width of the screen, which can allow them to
697 display additional text or avoid wrapping text onto the next line.
698 If you leave this disabled, your utilities will be especially
699 primitive and will be unable to determine the current screen width.
701 comment "Common options for df, du, ls"
702 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
704 config CONFIG_FEATURE_HUMAN_READABLE
705 bool "Support for human readable output (example 13k, 23M, 235G)"
707 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
709 Allow df, du, and ls to have human readable output.
711 comment "Common options for md5sum, sha1sum"
712 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
714 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
715 bool "Enable -c, -s and -w options"
717 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
719 Enabling the -c options allows files to be checked
720 against pre-calculated hash values.
722 -s and -w are useful options when verifying checksums.