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 Display nonprinting characters as escape sequences (like some
34 implementations' cat -v option).
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 comm is used to compare two files line by line and return
73 a three-column output.
79 cp is used to copy files and directories.
85 cut is used to print selected parts of lines from
92 date is used to set the system date or display the
93 current time in the given format.
95 config FEATURE_DATE_ISOFMT
96 bool "Enable ISO date format output (-I)"
100 Enable option (-I) to output an ISO-8601 compliant
107 dd copies a file (from standard input to standard output,
108 by default) using specific input and output blocksizes,
109 while optionally performing conversions on it.
111 config FEATURE_DD_SIGNAL_HANDLING
112 bool "Enable DD signal handling for status reporting"
116 sending a SIGUSR1 signal to a running `dd' process makes it
117 print to standard error the number of records read and written
118 so far, then to resume copying.
120 $ dd if=/dev/zero of=/dev/null& pid=$! $ kill -USR1 $pid; sleep 1; kill $pid
121 10899206+0 records in 10899206+0 records out
123 config FEATURE_DD_IBS_OBS
124 bool "Enable ibs, obs and conv options"
128 Enables support for writing a certain number of bytes in and out,
129 at a time, and performing conversions on the data stream.
135 df reports the amount of disk space used and available
142 dirname is used to strip a non-directory suffix from
146 bool "dos2unix/unix2dos"
149 dos2unix is used to convert a text file from DOS format to
150 UNIX format, and vice versa.
157 unix2dos is used to convert a text file from UNIX format to
158 DOS format, and vice versa.
161 bool "du (default blocksize of 512 bytes)"
164 du is used to report the amount of disk space used
167 config FEATURE_DU_DEFAULT_BLOCKSIZE_1K
168 bool "Use a default blocksize of 1024 bytes (1K)"
172 Use a blocksize of (1K) instead of the default 512b.
175 bool "echo (basic SuSv3 version taking no options)"
178 echo is used to print a specified string to stdout.
180 # this entry also appears in shell/Config.in, next to the echo builtin
181 config FEATURE_FANCY_ECHO
182 bool "Enable echo options (-n and -e)"
186 This adds options (-n and -e) to echo.
192 env is used to set an environment variable and run
193 a command; without options it displays the current
196 config FEATURE_ENV_LONG_OPTIONS
197 bool "Enable long options"
199 depends on ENV && GETOPT_LONG
201 Support long options for the env applet.
207 By default, convert all tabs to spaces.
209 config FEATURE_EXPAND_LONG_OPTIONS
210 bool "Enable long options"
212 depends on EXPAND && GETOPT_LONG
214 Support long options for the expand applet.
220 expr is used to calculate numbers and print the result
223 config EXPR_MATH_SUPPORT_64
224 bool "Extend Posix numbers support to 64 bit"
228 Enable 64-bit math support in the expr applet. This will make
229 the applet slightly larger, but will allow computation with very
236 false returns an exit code of FALSE (1).
242 Wrap text to fit a specific width.
248 head is used to print the first specified number of lines
251 config FEATURE_FANCY_HEAD
252 bool "Enable head options (-c, -q, and -v)"
256 This enables the head options (-c, -q, and -v).
262 hostid prints the numeric identifier (in hexadecimal) for
269 id displays the current user and group ID names.
275 Copy files and set attributes.
277 config FEATURE_INSTALL_LONG_OPTIONS
278 bool "Enable long options"
280 depends on INSTALL && GETOPT_LONG
282 Support long options for the install applet.
288 length is used to print out the length of a specified string.
294 ln is used to create hard or soft links between files.
300 logname is used to print the current user's login name.
306 ls is used to list the contents of directories.
308 config FEATURE_LS_FILETYPES
309 bool "Enable filetyping options (-p and -F)"
313 Enable the ls options (-p and -F).
315 config FEATURE_LS_FOLLOWLINKS
316 bool "Enable symlinks dereferencing (-L)"
320 Enable the ls option (-L).
322 config FEATURE_LS_RECURSIVE
323 bool "Enable recursion (-R)"
327 Enable the ls option (-R).
329 config FEATURE_LS_SORTFILES
330 bool "Sort the file names"
334 Allow ls to sort file names alphabetically.
336 config FEATURE_LS_TIMESTAMPS
337 bool "Show file timestamps"
341 Allow ls to display timestamps for files.
343 config FEATURE_LS_USERNAME
344 bool "Show username/groupnames"
348 Allow ls to display username/groupname for files.
350 config FEATURE_LS_COLOR
351 bool "Allow use of color to identify file types"
353 depends on LS && GETOPT_LONG
355 This enables the --color option to ls.
357 config FEATURE_LS_COLOR_IS_DEFAULT
358 bool "Produce colored ls output by default"
360 depends on FEATURE_LS_COLOR
362 Saying yes here will turn coloring on by default,
363 even if no "--color" option is given to the ls command.
364 This is not recommended, since the colors are not
365 configurable, and the output may not be legible on
372 md5sum is used to print or check MD5 checksums.
378 mkdir is used to create directories with the specified names.
380 config FEATURE_MKDIR_LONG_OPTIONS
381 bool "Enable long options"
383 depends on MKDIR && GETOPT_LONG
385 Support long options for the mkdir applet.
391 mkfifo is used to create FIFOs (named pipes).
392 The `mknod' program can also create FIFOs.
398 mknod is used to create FIFOs or block/character special
399 files with the specified names.
405 mv is used to move or rename files or directories.
407 config FEATURE_MV_LONG_OPTIONS
408 bool "Enable long options"
410 depends on MV && GETOPT_LONG
412 Support long options for the mv applet.
418 nice runs a program with modified scheduling priority.
424 run a command immune to hangups, with output to a non-tty.
430 od is used to dump binary files in octal and other formats.
436 printenv is used to print all or part of environment.
442 printf is used to format and print specified strings.
443 It's similar to `echo' except it has more options.
449 pwd is used to print the current directory.
455 This program reads a symbolic link and returns the name
456 of the file it points to
458 config FEATURE_READLINK_FOLLOW
459 bool "Enable canonicalization by following all symlinks (-f)"
463 Enable the readlink option (-f).
469 Return the canonicalized absolute pathname.
470 This isn't provided by GNU shellutils, but where else does it belong.
476 rm is used to remove files or directories.
482 rmdir is used to remove empty directories.
488 print a sequence of numbers
494 Compute and check SHA1 message digest
497 bool "sleep (single integer arg with no suffix)"
500 sleep is used to pause for a specified number of seconds,
502 config FEATURE_FANCY_SLEEP
503 bool "Enable multiple integer args and optional time suffixes"
507 Allow sleep to pause for specified minutes, hours, and days.
513 sort is used to sort lines of text in specified files.
515 config FEATURE_SORT_BIG
516 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
520 Without this, sort only supports -r, -u, and an integer version
521 of -n. Selecting this adds sort keys, floating point support, and
522 more. This adds a little over 3k to a nonstatic build on x86.
524 The SuSv3 sort standard is available at:
525 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
531 split a file into pieces.
533 config FEATURE_SPLIT_FANCY
534 bool "fancy extensions"
538 Add support for features not required by SUSv3.
539 Supports additional suffixes 'b' for 512 bytes,
540 'g' for 1GiB for the -b option.
546 display file or filesystem status.
548 config FEATURE_STAT_FORMAT
549 bool "Enable custom formats (-c)"
553 Without this, stat will not support the '-c format' option where
554 users can pass a custom format string for output. This adds about
555 7k to a nonstatic build on amd64.
561 stty is used to change and print terminal line settings.
567 checksum and count the blocks in a file
573 sync is used to flush filesystem buffers.
579 tail is used to print the last specified number of lines
582 config FEATURE_FANCY_TAIL
583 bool "Enable extra tail options (-q, -s, and -v)"
587 The options (-q, -s, and -v) are provided by GNU tail, but
588 are not specific in the SUSv3 standard.
594 tee is used to read from standard input and write
595 to standard output and files.
597 config FEATURE_TEE_USE_BLOCK_IO
598 bool "Enable block i/o (larger/faster) instead of byte i/o."
602 Enable this option for a faster tee, at expense of size.
608 test is used to check file types and compare values,
609 returning an appropriate exit code. The bash shell
610 has test built in, ash can build it in optionally.
612 config FEATURE_TEST_64
613 bool "Extend test to 64 bit"
617 Enable 64-bit support in test.
623 touch is used to create or change the access and/or
624 modification timestamp of specified files.
630 tr is used to squeeze, and/or delete characters from standard
631 input, writing to standard output.
633 config FEATURE_TR_CLASSES
634 bool "Enable character classes (such as [:upper:])"
638 Enable character classes, enabling commands such as:
639 tr [:upper:] [:lower:] to convert input into lowercase.
641 config FEATURE_TR_EQUIV
642 bool "Enable equivalence classes"
646 Enable equivalence classes, which essentially add the enclosed
647 character to the current set. For instance, tr [=a=] xyz would
648 replace all instances of 'a' with 'xyz'. This option is mainly
649 useful for cases when no other way of expressing a character
656 true returns an exit code of TRUE (0).
662 tty is used to print the name of the current terminal to
669 uname is used to print system information.
675 By default, convert only leading sequences of blanks to tabs.
677 config FEATURE_UNEXPAND_LONG_OPTIONS
678 bool "Enable long options"
680 depends on UNEXPAND && GETOPT_LONG
682 Support long options for the unexpand applet.
688 uniq is used to remove duplicate lines from a sorted file.
694 usleep is used to pause for a specified number of microseconds.
700 uudecode is used to decode a uuencoded file.
706 uuencode is used to uuencode a file.
712 wc is used to print the number of bytes, words, and lines,
715 config FEATURE_WC_LARGE
716 bool "Support very large files in wc"
720 Use "unsigned long long" in wc for count variables
727 who is used to show who is logged on.
733 whoami is used to print the username of the current
734 user id (same as id -un).
740 yes is used to repeatedly output a specific string, or
741 the default string `y'.
743 comment "Common options for cp and mv"
746 config FEATURE_PRESERVE_HARDLINKS
747 bool "Preserve hard links"
751 Allow cp and mv to preserve hard links.
753 comment "Common options for ls, more and telnet"
754 depends on LS || MORE || TELNET
756 config FEATURE_AUTOWIDTH
757 bool "Calculate terminal & column widths"
759 depends on LS || MORE || TELNET
761 This option allows utilities such as 'ls', 'more' and 'telnet'
762 to determine the width of the screen, which can allow them to
763 display additional text or avoid wrapping text onto the next line.
764 If you leave this disabled, your utilities will be especially
765 primitive and will be unable to determine the current screen width.
767 comment "Common options for df, du, ls"
768 depends on DF || DU || LS
770 config FEATURE_HUMAN_READABLE
771 bool "Support for human readable output (example 13k, 23M, 235G)"
773 depends on DF || DU || LS
775 Allow df, du, and ls to have human readable output.
777 comment "Common options for md5sum, sha1sum"
778 depends on MD5SUM || SHA1SUM
780 config FEATURE_MD5_SHA1_SUM_CHECK
781 bool "Enable -c, -s and -w options"
783 depends on MD5SUM || SHA1SUM
785 Enabling the -c options allows files to be checked
786 against pre-calculated hash values.
788 -s and -w are useful options when verifying checksums.