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 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 FEATURE_DATE_ISOFMT
103 bool "Enable ISO date format output (-I)"
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.
118 config FEATURE_DD_SIGNAL_HANDLING
119 bool "Enable DD signal handling for status reporting"
123 sending a SIGUSR1 signal to a running `dd' process makes it
124 print to standard error the number of records read and written
125 so far, then to resume copying.
127 $ dd if=/dev/zero of=/dev/null& pid=$! $ kill -USR1 $pid; sleep 1; kill $pid
128 10899206+0 records in 10899206+0 records out
130 config FEATURE_DD_IBS_OBS
131 bool "Enable ibs, obs and conv options"
135 Enables support for writing a certain number of bytes in and out,
136 at a time, and performing conversions on the data stream.
142 df reports the amount of disk space used and available
149 diff compares two files or directories and outputs the
150 differences between them in a form that can be given to
153 config FEATURE_DIFF_BINARY
154 bool "Enable checks for binary files"
158 This option enables support for checking for binary files
159 before a comparison is carried out.
161 config FEATURE_DIFF_DIR
162 bool "Enable directory support"
166 This option enables support for directory and subdirectory
169 config FEATURE_DIFF_MINIMAL
170 bool "Enable -d option to find smaller sets of changes"
174 Enabling this option allows the use of -d to make diff
175 try hard to find the smallest possible set of changes.
181 dirname is used to strip a non-directory suffix from
185 bool "dos2unix/unix2dos"
188 dos2unix is used to convert a text file from DOS format to
189 UNIX format, and vice versa.
196 unix2dos is used to convert a text file from UNIX format to
197 DOS format, and vice versa.
200 bool "du (default blocksize of 512 bytes)"
203 du is used to report the amount of disk space used
206 config FEATURE_DU_DEFAULT_BLOCKSIZE_1K
207 bool "Use a default blocksize of 1024 bytes (1K)"
211 Use a blocksize of (1K) instead of the default 512b.
214 bool "echo (basic SuSv3 version taking no options)"
217 echo is used to print a specified string to stdout.
219 # this entry also appears in shell/Config.in, next to the echo builtin
220 config FEATURE_FANCY_ECHO
221 bool "Enable echo options (-n and -e)"
225 This adds options (-n and -e) to echo.
231 env is used to set an environment variable and run
232 a command; without options it displays the current
235 config FEATURE_ENV_LONG_OPTIONS
236 bool "Enable long options"
238 depends on ENV && GETOPT_LONG
240 Support long options for the env applet.
246 expr is used to calculate numbers and print the result
249 config EXPR_MATH_SUPPORT_64
250 bool "Extend Posix numbers support to 64 bit"
254 Enable 64-bit math support in the expr applet. This will make
255 the applet slightly larger, but will allow computation with very
262 false returns an exit code of FALSE (1).
268 Wrap text to fit a specific width.
274 head is used to print the first specified number of lines
277 config FEATURE_FANCY_HEAD
278 bool "Enable head options (-c, -q, and -v)"
282 This enables the head options (-c, -q, and -v).
288 hostid prints the numeric identifier (in hexadecimal) for
295 id displays the current user and group ID names.
301 Copy files and set attributes.
303 config FEATURE_INSTALL_LONG_OPTIONS
304 bool "Enable long options"
306 depends on INSTALL && GETOPT_LONG
308 Support long options for the install applet.
314 length is used to print out the length of a specified string.
320 ln is used to create hard or soft links between files.
326 logname is used to print the current user's login name.
332 ls is used to list the contents of directories.
334 config FEATURE_LS_FILETYPES
335 bool "Enable filetyping options (-p and -F)"
339 Enable the ls options (-p and -F).
341 config FEATURE_LS_FOLLOWLINKS
342 bool "Enable symlinks dereferencing (-L)"
346 Enable the ls option (-L).
348 config FEATURE_LS_RECURSIVE
349 bool "Enable recursion (-R)"
353 Enable the ls option (-R).
355 config FEATURE_LS_SORTFILES
356 bool "Sort the file names"
360 Allow ls to sort file names alphabetically.
362 config FEATURE_LS_TIMESTAMPS
363 bool "Show file timestamps"
367 Allow ls to display timestamps for files.
369 config FEATURE_LS_USERNAME
370 bool "Show username/groupnames"
374 Allow ls to display username/groupname for files.
376 config FEATURE_LS_COLOR
377 bool "Allow use of color to identify file types"
379 depends on LS && GETOPT_LONG
381 This enables the --color option to ls.
383 config FEATURE_LS_COLOR_IS_DEFAULT
384 bool "Produce colored ls output by default"
386 depends on FEATURE_LS_COLOR
388 Saying yes here will turn coloring on by default,
389 even if no "--color" option is given to the ls command.
390 This is not recommended, since the colors are not
391 configurable, and the output may not be legible on
398 md5sum is used to print or check MD5 checksums.
404 mkdir is used to create directories with the specified names.
406 config FEATURE_MKDIR_LONG_OPTIONS
407 bool "Enable long options"
409 depends on MKDIR && GETOPT_LONG
411 Support long options for the mkdir applet.
417 mkfifo is used to create FIFOs (named pipes).
418 The `mknod' program can also create FIFOs.
424 mknod is used to create FIFOs or block/character special
425 files with the specified names.
431 mv is used to move or rename files or directories.
433 config FEATURE_MV_LONG_OPTIONS
434 bool "Enable long options"
436 depends on MV && GETOPT_LONG
438 Support long options for the mv applet.
444 nice runs a program with modified scheduling priority.
450 run a command immune to hangups, with output to a non-tty.
456 od is used to dump binary files in octal and other formats.
462 printenv is used to print all or part of environment.
468 printf is used to format and print specified strings.
469 It's similar to `echo' except it has more options.
475 pwd is used to print the current directory.
481 Return the canonicalized absolute pathname.
482 This isn't provided by GNU shellutils, but where else does it belong.
488 rm is used to remove files or directories.
494 rmdir is used to remove empty directories.
500 print a sequence of numbers
506 Compute and check SHA1 message digest
509 bool "sleep (single integer arg with no suffix)"
512 sleep is used to pause for a specified number of seconds,
514 config FEATURE_FANCY_SLEEP
515 bool "Enable multiple integer args and optional time suffixes"
519 Allow sleep to pause for specified minutes, hours, and days.
525 sort is used to sort lines of text in specified files.
527 config FEATURE_SORT_BIG
528 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
532 Without this, sort only supports -r, -u, and an integer version
533 of -n. Selecting this adds sort keys, floating point support, and
534 more. This adds a little over 3k to a nonstatic build on x86.
536 The SuSv3 sort standard is available at:
537 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
543 display file or filesystem status.
545 config FEATURE_STAT_FORMAT
546 bool "Enable custom formats (-c)"
550 Without this, stat will not support the '-c format' option where
551 users can pass a custom format string for output. This adds about
552 7k to a nonstatic build on amd64.
558 stty is used to change and print terminal line settings.
564 checksum and count the blocks in a file
570 sync is used to flush filesystem buffers.
576 tail is used to print the last specified number of lines
579 config FEATURE_FANCY_TAIL
580 bool "Enable extra tail options (-q, -s, and -v)"
584 The options (-q, -s, and -v) are provided by GNU tail, but
585 are not specific in the SUSv3 standard.
591 tee is used to read from standard input and write
592 to standard output and files.
594 config FEATURE_TEE_USE_BLOCK_IO
595 bool "Enable block i/o (larger/faster) instead of byte i/o."
599 Enable this option for a faster tee, at expense of size.
605 test is used to check file types and compare values,
606 returning an appropriate exit code. The bash shell
607 has test built in, ash can build it in optionally.
609 config FEATURE_TEST_64
610 bool "Extend test to 64 bit"
614 Enable 64-bit support in test.
620 touch is used to create or change the access and/or
621 modification timestamp of specified files.
627 tr is used to squeeze, and/or delete characters from standard
628 input, writing to standard output.
630 config FEATURE_TR_CLASSES
631 bool "Enable character classes (such as [:upper:])"
635 Enable character classes, enabling commands such as:
636 tr [:upper:] [:lower:] to convert input into lowercase.
638 config FEATURE_TR_EQUIV
639 bool "Enable equivalence classes"
643 Enable equivalence classes, which essentially add the enclosed
644 character to the current set. For instance, tr [=a=] xyz would
645 replace all instances of 'a' with 'xyz'. This option is mainly
646 useful for cases when no other way of expressing a character
653 true returns an exit code of TRUE (0).
659 tty is used to print the name of the current terminal to
666 uname is used to print system information.
672 uniq is used to remove duplicate lines from a sorted file.
678 usleep is used to pause for a specified number of microseconds.
684 uudecode is used to decode a uuencoded file.
690 uuencode is used to uuencode a file.
697 watch is used to execute a program periodically, showing
698 output to the screen.
704 wc is used to print the number of bytes, words, and lines,
707 config FEATURE_WC_LARGE
708 bool "Support very large files in wc"
712 Use "unsigned long long" in wc for count variables
719 who is used to show who is logged on.
725 whoami is used to print the username of the current
726 user id (same as id -un).
732 yes is used to repeatedly output a specific string, or
733 the default string `y'.
735 comment "Common options for cp and mv"
738 config FEATURE_PRESERVE_HARDLINKS
739 bool "Preserve hard links"
743 Allow cp and mv to preserve hard links.
745 comment "Common options for ls, more and telnet"
746 depends on LS || MORE || TELNET
748 config FEATURE_AUTOWIDTH
749 bool "Calculate terminal & column widths"
751 depends on LS || MORE || TELNET
753 This option allows utilities such as 'ls', 'more' and 'telnet'
754 to determine the width of the screen, which can allow them to
755 display additional text or avoid wrapping text onto the next line.
756 If you leave this disabled, your utilities will be especially
757 primitive and will be unable to determine the current screen width.
759 comment "Common options for df, du, ls"
760 depends on DF || DU || LS
762 config FEATURE_HUMAN_READABLE
763 bool "Support for human readable output (example 13k, 23M, 235G)"
765 depends on DF || DU || LS
767 Allow df, du, and ls to have human readable output.
769 comment "Common options for md5sum, sha1sum"
770 depends on MD5SUM || SHA1SUM
772 config FEATURE_MD5_SHA1_SUM_CHECK
773 bool "Enable -c, -s and -w options"
775 depends on MD5SUM || SHA1SUM
777 Enabling the -c options allows files to be checked
778 against pre-calculated hash values.
780 -s and -w are useful options when verifying checksums.