2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
14 cal is used to display a monthly calender.
20 Display nonprinting characters as escape sequences (like some
21 implementations' cat -v option).
27 chgrp is used to change the group ownership of files.
33 chmod is used to change the access permission of files.
39 chown is used to change the user and/or group ownership
42 config FEATURE_CHOWN_LONG_OPTIONS
43 bool "Enable long options"
45 depends on CHOWN && LONG_OPTS
47 Enable use of long options
53 chroot is used to change the root directory and run a command.
54 The default command is `/bin/sh'.
60 cksum is used to calculate the CRC32 checksum of a file.
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.
75 config FEATURE_CP_LONG_OPTIONS
76 bool "Enable long options for cp"
78 depends on CP && LONG_OPTS
80 Enable long options for cp.
81 Also add support for --parents option.
87 cut is used to print selected parts of lines from
94 dd copies a file (from standard input to standard output,
95 by default) using specific input and output blocksizes,
96 while optionally performing conversions on it.
98 config FEATURE_DD_SIGNAL_HANDLING
99 bool "Enable DD signal handling for status reporting"
103 Sending a SIGUSR1 signal to a running `dd' process makes it
104 print to standard error the number of records read and written
105 so far, then to resume copying.
107 $ dd if=/dev/zero of=/dev/null&
108 $ pid=$! kill -USR1 $pid; sleep 1; kill $pid
109 10899206+0 records in
110 10899206+0 records out
112 config FEATURE_DD_THIRD_STATUS_LINE
113 bool "Enable the third status line upon signal"
115 depends on DD && FEATURE_DD_SIGNAL_HANDLING
117 Displays a coreutils-like third status line with transferred bytes,
118 elapsed time and speed.
120 config FEATURE_DD_IBS_OBS
121 bool "Enable ibs, obs and conv options"
125 Enables support for writing a certain number of bytes in and out,
126 at a time, and performing conversions on the data stream.
132 df reports the amount of disk space used and available
135 config FEATURE_DF_FANCY
136 bool "Enable -a, -i, -B"
140 This option enables -a, -i and -B.
142 -a Show all filesystems
150 dirname is used to strip a non-directory suffix from
154 bool "dos2unix/unix2dos"
157 dos2unix is used to convert a text file from DOS format to
158 UNIX format, and vice versa.
165 unix2dos is used to convert a text file from UNIX format to
166 DOS format, and vice versa.
169 bool "du (default blocksize of 512 bytes)"
172 du is used to report the amount of disk space used
175 config FEATURE_DU_DEFAULT_BLOCKSIZE_1K
176 bool "Use a default blocksize of 1024 bytes (1K)"
180 Use a blocksize of (1K) instead of the default 512b.
183 bool "echo (basic SuSv3 version taking no options)"
186 echo is used to print a specified string to stdout.
188 # this entry also appears in shell/Config.in, next to the echo builtin
189 config FEATURE_FANCY_ECHO
190 bool "Enable echo options (-n and -e)"
192 depends on ECHO || ASH_BUILTIN_ECHO || HUSH
194 This adds options (-n and -e) to echo.
200 env is used to set an environment variable and run
201 a command; without options it displays the current
204 config FEATURE_ENV_LONG_OPTIONS
205 bool "Enable long options"
207 depends on ENV && LONG_OPTS
209 Support long options for the env applet.
215 By default, convert all tabs to spaces.
217 config FEATURE_EXPAND_LONG_OPTIONS
218 bool "Enable long options"
220 depends on EXPAND && LONG_OPTS
222 Support long options for the expand applet.
228 expr is used to calculate numbers and print the result
231 config EXPR_MATH_SUPPORT_64
232 bool "Extend Posix numbers support to 64 bit"
236 Enable 64-bit math support in the expr applet. This will make
237 the applet slightly larger, but will allow computation with very
244 false returns an exit code of FALSE (1).
250 Wrap text to fit a specific width.
256 fsync is used to flush file-related cached blocks to disk.
262 head is used to print the first specified number of lines
265 config FEATURE_FANCY_HEAD
266 bool "Enable head options (-c, -q, and -v)"
270 This enables the head options (-c, -q, and -v).
276 hostid prints the numeric identifier (in hexadecimal) for
283 id displays the current user and group ID names.
289 Copy files and set attributes.
291 config FEATURE_INSTALL_LONG_OPTIONS
292 bool "Enable long options"
294 depends on INSTALL && LONG_OPTS
296 Support long options for the install applet.
302 length is used to print out the length of a specified string.
308 ln is used to create hard or soft links between files.
314 logname is used to print the current user's login name.
320 ls is used to list the contents of directories.
322 config FEATURE_LS_FILETYPES
323 bool "Enable filetyping options (-p and -F)"
327 Enable the ls options (-p and -F).
329 config FEATURE_LS_FOLLOWLINKS
330 bool "Enable symlinks dereferencing (-L)"
334 Enable the ls option (-L).
336 config FEATURE_LS_RECURSIVE
337 bool "Enable recursion (-R)"
341 Enable the ls option (-R).
343 config FEATURE_LS_SORTFILES
344 bool "Sort the file names"
348 Allow ls to sort file names alphabetically.
350 config FEATURE_LS_TIMESTAMPS
351 bool "Show file timestamps"
355 Allow ls to display timestamps for files.
357 config FEATURE_LS_USERNAME
358 bool "Show username/groupnames"
362 Allow ls to display username/groupname for files.
364 config FEATURE_LS_COLOR
365 bool "Allow use of color to identify file types"
367 depends on LS && LONG_OPTS
369 This enables the --color option to ls.
371 config FEATURE_LS_COLOR_IS_DEFAULT
372 bool "Produce colored ls output by default"
374 depends on FEATURE_LS_COLOR
376 Saying yes here will turn coloring on by default,
377 even if no "--color" option is given to the ls command.
378 This is not recommended, since the colors are not
379 configurable, and the output may not be legible on
386 md5sum is used to print or check MD5 checksums.
392 mkdir is used to create directories with the specified names.
394 config FEATURE_MKDIR_LONG_OPTIONS
395 bool "Enable long options"
397 depends on MKDIR && LONG_OPTS
399 Support long options for the mkdir applet.
405 mkfifo is used to create FIFOs (named pipes).
406 The `mknod' program can also create FIFOs.
412 mknod is used to create FIFOs or block/character special
413 files with the specified names.
419 mv is used to move or rename files or directories.
421 config FEATURE_MV_LONG_OPTIONS
422 bool "Enable long options"
424 depends on MV && LONG_OPTS
426 Support long options for the mv applet.
432 nice runs a program with modified scheduling priority.
438 run a command immune to hangups, with output to a non-tty.
444 od is used to dump binary files in octal and other formats.
450 printenv is used to print all or part of environment.
456 printf is used to format and print specified strings.
457 It's similar to `echo' except it has more options.
463 pwd is used to print the current directory.
469 This program reads a symbolic link and returns the name
470 of the file it points to
472 config FEATURE_READLINK_FOLLOW
473 bool "Enable canonicalization by following all symlinks (-f)"
477 Enable the readlink option (-f).
483 Return the canonicalized absolute pathname.
484 This isn't provided by GNU shellutils, but where else does it belong.
490 rm is used to remove files or directories.
496 rmdir is used to remove empty directories.
498 config FEATURE_RMDIR_LONG_OPTIONS
499 bool "Enable long options"
501 depends on RMDIR && LONG_OPTS
503 Support long options for the rmdir applet, including
504 --ignore-fail-on-non-empty for compatibility with GNU rmdir.
510 print a sequence of numbers
516 Compute and check SHA1 message digest
522 Compute and check SHA256 message digest
528 Compute and check SHA512 message digest
534 sleep is used to pause for a specified number of seconds.
535 It comes in 3 versions:
536 - small: takes one integer parameter
537 - fancy: takes multiple integer arguments with suffixes:
539 - fancy with fractional numbers:
540 sleep 2.3s 4.5h sleeps for 16202.3 seconds
541 Last one is "the most compatible" with coreutils sleep,
542 but it adds around 1k of code.
544 config FEATURE_FANCY_SLEEP
545 bool "Enable multiple arguments and s/m/h/d suffixes"
549 Allow sleep to pause for specified minutes, hours, and days.
551 config FEATURE_FLOAT_SLEEP
552 bool "Enable fractional arguments"
554 depends on FEATURE_FANCY_SLEEP
556 Allow for fractional numeric parameters.
562 sort is used to sort lines of text in specified files.
564 config FEATURE_SORT_BIG
565 bool "Full SuSv3 compliant sort (support -ktcsbdfiozgM)"
569 Without this, sort only supports -r, -u, and an integer version
570 of -n. Selecting this adds sort keys, floating point support, and
571 more. This adds a little over 3k to a nonstatic build on x86.
573 The SuSv3 sort standard is available at:
574 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
580 split a file into pieces.
582 config FEATURE_SPLIT_FANCY
583 bool "Fancy extensions"
587 Add support for features not required by SUSv3.
588 Supports additional suffixes 'b' for 512 bytes,
589 'g' for 1GiB for the -b option.
594 depends on PLATFORM_LINUX # statfs()
596 display file or filesystem status.
598 config FEATURE_STAT_FORMAT
599 bool "Enable custom formats (-c)"
603 Without this, stat will not support the '-c format' option where
604 users can pass a custom format string for output. This adds about
605 7k to a nonstatic build on amd64.
611 stty is used to change and print terminal line settings.
617 checksum and count the blocks in a file
623 sync is used to flush filesystem buffers.
629 tac is used to concatenate and print files in reverse.
635 tail is used to print the last specified number of lines
638 config FEATURE_FANCY_TAIL
639 bool "Enable extra tail options (-q, -s, -v, and -F)"
643 The options (-q, -s, and -v) are provided by GNU tail, but
644 are not specific in the SUSv3 standard.
646 -q Never output headers giving file names
647 -s SEC Wait SEC seconds between reads with -f
648 -v Always output headers giving file names
654 tee is used to read from standard input and write
655 to standard output and files.
657 config FEATURE_TEE_USE_BLOCK_IO
658 bool "Enable block I/O (larger/faster) instead of byte I/O"
662 Enable this option for a faster tee, at expense of size.
668 true returns an exit code of TRUE (0).
674 tty is used to print the name of the current terminal to
681 uname is used to print system information.
687 By default, convert only leading sequences of blanks to tabs.
689 config FEATURE_UNEXPAND_LONG_OPTIONS
690 bool "Enable long options"
692 depends on UNEXPAND && LONG_OPTS
694 Support long options for the unexpand applet.
700 uniq is used to remove duplicate lines from a sorted file.
706 usleep is used to pause for a specified number of microseconds.
712 uudecode is used to decode a uuencoded file.
718 uuencode is used to uuencode a file.
724 wc is used to print the number of bytes, words, and lines,
727 config FEATURE_WC_LARGE
728 bool "Support very large files in wc"
732 Use "unsigned long long" in wc for counter variables.
737 depends on FEATURE_UTMP
739 who is used to show who is logged on.
745 whoami is used to print the username of the current
746 user id (same as id -un).
752 yes is used to repeatedly output a specific string, or
753 the default string `y'.
755 comment "Common options for cp and mv"
758 config FEATURE_PRESERVE_HARDLINKS
759 bool "Preserve hard links"
763 Allow cp and mv to preserve hard links.
765 comment "Common options for ls, more and telnet"
766 depends on LS || MORE || TELNET
768 config FEATURE_AUTOWIDTH
769 bool "Calculate terminal & column widths"
771 depends on LS || MORE || TELNET
773 This option allows utilities such as 'ls', 'more' and 'telnet'
774 to determine the width of the screen, which can allow them to
775 display additional text or avoid wrapping text onto the next line.
776 If you leave this disabled, your utilities will be especially
777 primitive and will be unable to determine the current screen width.
779 comment "Common options for df, du, ls"
780 depends on DF || DU || LS
782 config FEATURE_HUMAN_READABLE
783 bool "Support for human readable output (example 13k, 23M, 235G)"
785 depends on DF || DU || LS
787 Allow df, du, and ls to have human readable output.
789 comment "Common options for md5sum, sha1sum, sha256sum, sha512sum"
790 depends on MD5SUM || SHA1SUM || SHA256SUM || SHA512SUM
792 config FEATURE_MD5_SHA1_SUM_CHECK
793 bool "Enable -c, -s and -w options"
795 depends on MD5SUM || SHA1SUM || SHA256SUM || SHA512SUM
797 Enabling the -c options allows files to be checked
798 against pre-calculated hash values.
800 -s and -w are useful options when verifying checksums.