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
85 comment "date (forced enabled for use with watch)"
93 date is used to set the system date or display the
94 current time in the given format.
97 config CONFIG_FEATURE_DATE_ISOFMT
98 bool " Enable ISO date format output (-I)"
100 depends on CONFIG_DATE
102 Enable option (-I) to output an ISO-8601 compliant
109 dd copies a file (from standard input to standard output,
110 by default) using specific input and output blocksizes,
111 while optionally performing conversions on it.
117 df reports the amount of disk space used and available
120 config CONFIG_DIRNAME
124 dirname is used to strip a non-directory suffix from
127 config CONFIG_DOS2UNIX
128 bool "dos2unix/unix2dos"
131 dos2unix is used to convert a text file from DOS format to
132 UNIX format, and vice versa.
134 config CONFIG_UNIX2DOS
137 depends on CONFIG_DOS2UNIX
140 bool "du (default blocksize of 512 bytes)"
143 du is used to report the amount of disk space used
146 config CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
147 bool " Use a default blocksize of 1024 bytes (1K)"
151 Use a blocksize of (1K) instead of the default 512b.
154 bool "echo (basic SUSv3 version taking no options)"
157 echo is used to print a specified string to stdout.
159 # this entry also appears in shell/Config.in, next to the echo builtin
160 config CONFIG_FEATURE_FANCY_ECHO
161 bool " Enable echo options (-n and -e)"
163 depends on CONFIG_ECHO
165 This adds options (-n and -e) to echo.
171 env is used to set an environment variable and run
172 a command; without options it displays the current
175 config CONFIG_PRINTENV
179 printenv is used to print all or part of environment.
185 expr is used to calculate numbers and print the result
188 if CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
191 comment "false (forced enabled for use with shell)"
194 if !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
199 false returns an exit code of FALSE (1).
206 Wrap text to fit a specific width.
212 head is used to print the first specified number of lines
215 config CONFIG_FEATURE_FANCY_HEAD
216 bool " Enable head options (-c, -q, and -v)"
218 depends on CONFIG_HEAD
220 This enables the head options (-c, -q, and -v).
226 hostid prints the numeric identifier (in hexadecimal) for
233 id displays the current user and group ID names.
235 config CONFIG_INSTALL
239 Copy files and set attributes.
245 length is used to print out the length of a specified string.
251 ln is used to create hard or soft links between files.
253 config CONFIG_LOGNAME
257 logname is used to print the current user's login name.
263 ls is used to list the contents of directories.
265 config CONFIG_FEATURE_LS_FILETYPES
266 bool " Enable filetyping options (-p and -F)"
270 Enable the ls options (-p and -F).
272 config CONFIG_FEATURE_LS_FOLLOWLINKS
273 bool " Enable symlinks dereferencing (-L)"
277 Enable the ls option (-L).
279 config CONFIG_FEATURE_LS_RECURSIVE
280 bool " Enable recursion (-R)"
284 Enable the ls option (-R).
286 config CONFIG_FEATURE_LS_SORTFILES
287 bool " Sort the file names"
291 Allow ls to sort file names alphabetically.
293 config CONFIG_FEATURE_LS_TIMESTAMPS
294 bool " Show file timestamps"
298 Allow ls to display timestamps for files.
300 config CONFIG_FEATURE_LS_USERNAME
301 bool " Show username/groupnames"
305 Allow ls to display username/groupname for files.
307 config CONFIG_FEATURE_LS_COLOR
308 bool " Allow use of color to identify file types"
312 This enables the --color option to ls.
314 if CONFIG_FEATURE_LS_COLOR
315 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
316 bool " Produce colored ls output by default"
319 Saying yes here will turn coloring on by default,
320 even if no "--color" option is given to the ls command.
321 This is not recommended, since the colors are not
322 configurable, and the output may not be legible on
330 md5sum is used to print or check MD5 checksums.
336 mkdir is used to create directories with the specified names.
342 mkfifo is used to create FIFOs (named pipes).
343 The `mknod' program can also create FIFOs.
349 mknod is used to create FIFOs or block/character special
350 files with the specified names.
356 mv is used to move or rename files or directories.
362 nice runs a program with modified scheduling priority.
368 run a command immune to hangups, with output to a non-tty.
374 od is used to dump binary files in octal and other formats.
380 printf is used to format and print specified strings.
381 It's similar to `echo' except it has more options.
387 pwd is used to print the current directory.
389 config CONFIG_REALPATH
393 Return the canonicalized absolute pathname.
394 This isn't provided by GNU shellutils, but where else does it belong.
400 rm is used to remove files or directories.
406 rmdir is used to remove empty directories.
412 print a sequence of numbers
414 config CONFIG_SHA1SUM
418 Compute and check SHA1 message digest
421 bool "sleep (single integer arg with no suffix)"
424 sleep is used to pause for a specified number of seconds,
426 config CONFIG_FEATURE_FANCY_SLEEP
427 bool " Enable multiple integer args and optional time suffixes"
429 depends on CONFIG_SLEEP
431 Allow sleep to pause for specified minutes, hours, and days.
437 sort is used to sort lines of text in specified files.
439 config CONFIG_SORT_BIG
440 bool " full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
442 depends on CONFIG_SORT
444 Without this, sort only supports -r, -u, and an integer version
445 of -n. Selecting this adds sort keys, floating point support, and
446 more. This adds a little over 3k to a nonstatic build on x86.
448 The SuSv3 sort standard is available at:
449 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
455 display file or filesystem status.
457 config CONFIG_FEATURE_STAT_FORMAT
458 bool " Enable custom formats (-c)"
460 depends on CONFIG_STAT
462 Without this, stat will not support the '-c format' option where
463 users can pass a custom format string for output. This adds about
464 7k to a nonstatic build on amd64.
470 stty is used to change and print terminal line settings.
476 checksum and count the blocks in a file
482 sync is used to flush filesystem buffers.
488 tail is used to print the last specified number of lines
491 config CONFIG_FEATURE_FANCY_TAIL
492 bool " Enable extra tail options (-q, -s, and -v)"
494 depends on CONFIG_TAIL
496 The options (-q, -s, and -v) are provided by GNU tail, but
497 are not specific in the SUSv3 standard.
503 tee is used to read from standard input and write
504 to standard output and files.
506 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
507 bool " Enable block i/o (larger/faster) instead of byte i/o."
509 depends on CONFIG_TEE
511 Enable this option for a faster tee, at expense of size.
513 if CONFIG_ASH || CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
516 comment "test (forced enabled for use with shell)"
519 if !CONFIG_ASH && !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
524 test is used to check file types and compare values,
525 returning an appropriate exit code. The shells (ash
526 and bash) have test builtin.
529 config CONFIG_FEATURE_TEST_64
530 bool " Extend test to 64 bit"
532 depends on CONFIG_TEST
534 Enable 64-bit support in test.
540 touch is used to create or change the access and/or
541 modification timestamp of specified files.
547 tr is used to squeeze, and/or delete characters from standard
548 input, writing to standard output.
550 if CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
553 comment "true (forced enabled for use with shell)"
556 if !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
561 true returns an exit code of TRUE (0).
569 tty is used to print the name of the current terminal to
576 uname is used to print system information.
582 uniq is used to remove duplicate lines from a sorted file.
588 usleep is used to pause for a specified number of microseconds.
590 config CONFIG_UUDECODE
594 uudecode is used to decode a uuencoded file.
596 config CONFIG_UUENCODE
600 uuencode is used to uuencode a file.
606 watch is used to execute a program periodically, showing
607 output to the screen.
613 wc is used to print the number of bytes, words, and lines,
619 select CONFIG_FEATURE_UTMP
621 who is used to show who is logged on.
627 whoami is used to print the username of the current
628 user id (same as id -un).
634 yes is used to repeatedly output a specific string, or
635 the default string `y'.
637 comment "Common options for cp and mv"
638 depends on CONFIG_CP || CONFIG_MV
640 config CONFIG_FEATURE_PRESERVE_HARDLINKS
641 bool " Preserve hard links"
643 depends on CONFIG_CP || CONFIG_MV
645 Allow cp and mv to preserve hard links.
647 comment "Common options for ls and more"
648 depends on CONFIG_LS || CONFIG_MORE
650 config CONFIG_FEATURE_AUTOWIDTH
651 bool " Calculate terminal & column widths"
653 depends on CONFIG_LS || CONFIG_MORE
655 This option allows utilities such as 'ls' and 'more' to determine the
656 width of the screen, which can allow them to display additional text
657 or avoid wrapping text onto the next line. If you leave this
658 disabled, your utilities will be especially primitive and will be
659 unable to determine the current screen width.
661 comment "Common options for df, du, ls"
662 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
664 config CONFIG_FEATURE_HUMAN_READABLE
665 bool " Support for human readable output (example 13k, 23M, 235G)"
667 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
669 Allow df, du, and ls to have human readable output.
671 comment "Common options for md5sum, sha1sum"
672 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
674 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
675 bool " Enable -c, -s and -w options"
677 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
679 Enabling the -c options allows files to be checked
680 against pre-calculated hash values.
682 -s and -w are useful options when verifying checksums.