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 config CONFIG_FEATURE_FANCY_ECHO
160 bool " Enable echo options (-n and -e)"
162 depends on CONFIG_ECHO
164 This adds options (-n and -e) to echo.
170 env is used to set an environment variable and run
171 a command; without options it displays the current
174 config CONFIG_PRINTENV
178 printenv is used to print all or part of environment.
184 expr is used to calculate numbers and print the result
187 if CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
190 comment "false (forced enabled for use with shell)"
193 if !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
198 false returns an exit code of FALSE (1).
205 Wrap text to fit a specific width.
211 head is used to print the first specified number of lines
214 config CONFIG_FEATURE_FANCY_HEAD
215 bool " Enable head options (-c, -q, and -v)"
217 depends on CONFIG_HEAD
219 This enables the head options (-c, -q, and -v).
225 hostid prints the numeric identifier (in hexadecimal) for
232 id displays the current user and group ID names.
234 config CONFIG_INSTALL
238 Copy files and set attributes.
244 length is used to print out the length of a specified string.
250 ln is used to create hard or soft links between files.
252 config CONFIG_LOGNAME
256 logname is used to print the current user's login name.
262 ls is used to list the contents of directories.
264 config CONFIG_FEATURE_LS_FILETYPES
265 bool " Enable filetyping options (-p and -F)"
269 Enable the ls options (-p and -F).
271 config CONFIG_FEATURE_LS_FOLLOWLINKS
272 bool " Enable symlinks dereferencing (-L)"
276 Enable the ls option (-L).
278 config CONFIG_FEATURE_LS_RECURSIVE
279 bool " Enable recursion (-R)"
283 Enable the ls option (-R).
285 config CONFIG_FEATURE_LS_SORTFILES
286 bool " Sort the file names"
290 Allow ls to sort file names alphabetically.
292 config CONFIG_FEATURE_LS_TIMESTAMPS
293 bool " Show file timestamps"
297 Allow ls to display timestamps for files.
299 config CONFIG_FEATURE_LS_USERNAME
300 bool " Show username/groupnames"
304 Allow ls to display username/groupname for files.
306 config CONFIG_FEATURE_LS_COLOR
307 bool " Use color to identify file types"
311 Allow ls to use color when displaying files.
317 md5sum is used to print or check MD5 checksums.
323 mkdir is used to create directories with the specified names.
329 mkfifo is used to create FIFOs (named pipes).
330 The `mknod' program can also create FIFOs.
336 mknod is used to create FIFOs or block/character special
337 files with the specified names.
343 mv is used to move or rename files or directories.
349 nice runs a program with modified scheduling priority.
355 od is used to dump binary files in octal and other formats.
361 printf is used to format and print specified strings.
362 It's similar to `echo' except it has more options.
368 pwd is used to print the current directory.
370 config CONFIG_REALPATH
374 Return the canonicalized absolute pathname.
375 This isn't provided by GNU shellutils, but where else does it belong.
381 rm is used to remove files or directories.
387 rmdir is used to remove empty directories.
393 print a sequence of numbers
395 config CONFIG_SHA1SUM
399 Compute and check SHA1 message digest
402 bool "sleep (single integer arg with no suffix)"
405 sleep is used to pause for a specified number of seconds,
407 config CONFIG_FEATURE_FANCY_SLEEP
408 bool " Enable multiple integer args and optional time suffixes"
410 depends on CONFIG_SLEEP
412 Allow sleep to pause for specified minutes, hours, and days.
418 sort is used to sort lines of text in specified files.
420 config CONFIG_SORT_BIG
421 bool " full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
423 depends on CONFIG_SORT
425 Without this, sort only supports -r, -u, and an integer version
426 of -n. Selecting this adds sort keys, floating point support, and
427 more. This adds a little over 3k to a nonstatic build on x86.
429 The SuSv3 sort standard is available at:
430 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
436 display file or filesystem status.
438 config CONFIG_FEATURE_STAT_FORMAT
439 bool " Enable custom formats (-c)"
441 depends on CONFIG_STAT
443 Without this, stat will not support the '-c format' option where
444 users can pass a custom format string for output. This adds about
445 7k to a nonstatic build on amd64.
451 stty is used to change and print terminal line settings.
457 checksum and count the blocks in a file
463 sync is used to flush filesystem buffers.
469 tail is used to print the last specified number of lines
472 config CONFIG_FEATURE_FANCY_TAIL
473 bool " Enable extra tail options (-q, -s, and -v)"
475 depends on CONFIG_TAIL
477 The options (-q, -s, and -v) are provided by GNU tail, but
478 are not specific in the SUSv3 standard.
484 tee is used to read from standard input and write
485 to standard output and files.
487 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
488 bool " Enable block i/o (larger/faster) instead of byte i/o."
490 depends on CONFIG_TEE
492 Enable this option for a faster tee, at expense of size.
494 if CONFIG_ASH || CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
497 comment "test (forced enabled for use with shell)"
500 if !CONFIG_ASH && !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
505 test is used to check file types and compare values,
506 returning an appropriate exit code. The shells (ash
507 and bash) have test builtin.
510 config CONFIG_FEATURE_TEST_64
511 bool " Extend test to 64 bit"
513 depends on CONFIG_TEST
515 Enable 64-bit support in test.
521 touch is used to create or change the access and/or
522 modification timestamp of specified files.
528 tr is used to squeeze, and/or delete characters from standard
529 input, writing to standard output.
531 if CONFIG_HUSH || CONFIG_LASH || CONFIG_MSH
534 comment "true (forced enabled for use with shell)"
537 if !CONFIG_HUSH && !CONFIG_LASH && !CONFIG_MSH
542 true returns an exit code of TRUE (0).
550 tty is used to print the name of the current terminal to
557 uname is used to print system information.
563 uniq is used to remove duplicate lines from a sorted file.
569 usleep is used to pause for a specified number of microseconds.
571 config CONFIG_UUDECODE
575 uudecode is used to decode a uuencoded file.
577 config CONFIG_UUENCODE
581 uuencode is used to uuencode a file.
587 watch is used to execute a program periodically, showing
588 output to the screen.
594 wc is used to print the number of bytes, words, and lines,
600 select CONFIG_FEATURE_U_W_TMP
602 who is used to show who is logged on.
608 whoami is used to print the username of the current
609 user id (same as id -un).
615 yes is used to repeatedly output a specific string, or
616 the default string `y'.
618 comment "Common options for cp and mv"
619 depends on CONFIG_CP || CONFIG_MV
621 config CONFIG_FEATURE_PRESERVE_HARDLINKS
622 bool " Preserve hard links"
624 depends on CONFIG_CP || CONFIG_MV
626 Allow cp and mv to preserve hard links.
628 comment "Common options for ls and more"
629 depends on CONFIG_LS || CONFIG_MORE
631 config CONFIG_FEATURE_AUTOWIDTH
632 bool " Calculate terminal & column widths"
634 depends on CONFIG_LS || CONFIG_MORE
636 This option allows utilities such as 'ls' and 'more' to determine the
637 width of the screen, which can allow them to display additional text
638 or avoid wrapping text onto the next line. If you leave this
639 disabled, your utilities will be especially primitive and will be
640 unable to determine the current screen width.
642 comment "Common options for df, du, ls"
643 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
645 config CONFIG_FEATURE_HUMAN_READABLE
646 bool " Support for human readable output (example 13k, 23M, 235G)"
648 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
650 Allow df, du, and ls to have human readable output.
652 comment "Common options for md5sum, sha1sum"
653 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
655 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
656 bool " Enable -c, -s and -w options"
658 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
660 Enabling the -c options allows files to be checked
661 against pre-calculated hash values.
663 -s and -w are useful options when verifying checksums.