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.
29 config CONFIG_FEATURE_CAT_ESCAPE
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 CONFIG_FEATURE_DATE_ISOFMT
103 bool "Enable ISO date format output (-I)"
105 depends on CONFIG_DATE
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 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 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 CONFIG_FEATURE_DIFF_BINARY
154 bool "Enable checks for binary files"
156 depends on CONFIG_DIFF
158 This option enables support for checking for binary files
159 before a comparison is carried out.
161 config CONFIG_FEATURE_DIFF_DIR
162 bool "Enable directory support"
164 depends on CONFIG_DIFF
166 This option enables support for directory and subdirectory
169 config CONFIG_FEATURE_DIFF_MINIMAL
170 bool "Enable -d option to find smaller sets of changes"
172 depends on CONFIG_DIFF
174 Enabling this option allows the use of -d to make diff
175 try hard to find the smallest possible set of changes.
177 config CONFIG_DIRNAME
181 dirname is used to strip a non-directory suffix from
184 config CONFIG_DOS2UNIX
185 bool "dos2unix/unix2dos"
188 dos2unix is used to convert a text file from DOS format to
189 UNIX format, and vice versa.
191 config CONFIG_UNIX2DOS
194 depends on CONFIG_DOS2UNIX
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 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 CONFIG_FEATURE_FANCY_ECHO
221 bool "Enable echo options (-n and -e)"
223 depends on CONFIG_ECHO
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
239 expr is used to calculate numbers and print the result
242 config CONFIG_EXPR_MATH_SUPPORT_64
243 bool "Extend Posix numbers support to 64 bit"
245 depends on CONFIG_EXPR
247 Enable 64-bit math support in the expr applet. This will make
248 the applet slightly larger, but will allow computation with very
255 false returns an exit code of FALSE (1).
261 Wrap text to fit a specific width.
267 head is used to print the first specified number of lines
270 config CONFIG_FEATURE_FANCY_HEAD
271 bool "Enable head options (-c, -q, and -v)"
273 depends on CONFIG_HEAD
275 This enables the head options (-c, -q, and -v).
281 hostid prints the numeric identifier (in hexadecimal) for
288 id displays the current user and group ID names.
290 config CONFIG_INSTALL
294 Copy files and set attributes.
300 length is used to print out the length of a specified string.
306 ln is used to create hard or soft links between files.
308 config CONFIG_LOGNAME
312 logname is used to print the current user's login name.
318 ls is used to list the contents of directories.
320 config CONFIG_FEATURE_LS_FILETYPES
321 bool "Enable filetyping options (-p and -F)"
325 Enable the ls options (-p and -F).
327 config CONFIG_FEATURE_LS_FOLLOWLINKS
328 bool "Enable symlinks dereferencing (-L)"
332 Enable the ls option (-L).
334 config CONFIG_FEATURE_LS_RECURSIVE
335 bool "Enable recursion (-R)"
339 Enable the ls option (-R).
341 config CONFIG_FEATURE_LS_SORTFILES
342 bool "Sort the file names"
346 Allow ls to sort file names alphabetically.
348 config CONFIG_FEATURE_LS_TIMESTAMPS
349 bool "Show file timestamps"
353 Allow ls to display timestamps for files.
355 config CONFIG_FEATURE_LS_USERNAME
356 bool "Show username/groupnames"
360 Allow ls to display username/groupname for files.
362 config CONFIG_FEATURE_LS_COLOR
363 bool "Allow use of color to identify file types"
367 This enables the --color option to ls.
369 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
370 bool "Produce colored ls output by default"
372 depends on CONFIG_FEATURE_LS_COLOR
374 Saying yes here will turn coloring on by default,
375 even if no "--color" option is given to the ls command.
376 This is not recommended, since the colors are not
377 configurable, and the output may not be legible on
384 md5sum is used to print or check MD5 checksums.
390 mkdir is used to create directories with the specified names.
396 mkfifo is used to create FIFOs (named pipes).
397 The `mknod' program can also create FIFOs.
403 mknod is used to create FIFOs or block/character special
404 files with the specified names.
410 mv is used to move or rename files or directories.
416 nice runs a program with modified scheduling priority.
422 run a command immune to hangups, with output to a non-tty.
428 od is used to dump binary files in octal and other formats.
430 config CONFIG_PRINTENV
434 printenv is used to print all or part of environment.
440 printf is used to format and print specified strings.
441 It's similar to `echo' except it has more options.
447 pwd is used to print the current directory.
449 config CONFIG_REALPATH
453 Return the canonicalized absolute pathname.
454 This isn't provided by GNU shellutils, but where else does it belong.
460 rm is used to remove files or directories.
466 rmdir is used to remove empty directories.
472 print a sequence of numbers
474 config CONFIG_SHA1SUM
478 Compute and check SHA1 message digest
481 bool "sleep (single integer arg with no suffix)"
484 sleep is used to pause for a specified number of seconds,
486 config CONFIG_FEATURE_FANCY_SLEEP
487 bool "Enable multiple integer args and optional time suffixes"
489 depends on CONFIG_SLEEP
491 Allow sleep to pause for specified minutes, hours, and days.
497 sort is used to sort lines of text in specified files.
499 config CONFIG_FEATURE_SORT_BIG
500 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
502 depends on CONFIG_SORT
504 Without this, sort only supports -r, -u, and an integer version
505 of -n. Selecting this adds sort keys, floating point support, and
506 more. This adds a little over 3k to a nonstatic build on x86.
508 The SuSv3 sort standard is available at:
509 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
515 display file or filesystem status.
517 config CONFIG_FEATURE_STAT_FORMAT
518 bool "Enable custom formats (-c)"
520 depends on CONFIG_STAT
522 Without this, stat will not support the '-c format' option where
523 users can pass a custom format string for output. This adds about
524 7k to a nonstatic build on amd64.
530 stty is used to change and print terminal line settings.
536 checksum and count the blocks in a file
542 sync is used to flush filesystem buffers.
548 tail is used to print the last specified number of lines
551 config CONFIG_FEATURE_FANCY_TAIL
552 bool "Enable extra tail options (-q, -s, and -v)"
554 depends on CONFIG_TAIL
556 The options (-q, -s, and -v) are provided by GNU tail, but
557 are not specific in the SUSv3 standard.
563 tee is used to read from standard input and write
564 to standard output and files.
566 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
567 bool "Enable block i/o (larger/faster) instead of byte i/o."
569 depends on CONFIG_TEE
571 Enable this option for a faster tee, at expense of size.
577 test is used to check file types and compare values,
578 returning an appropriate exit code. The shells (ash
579 and bash) have test builtin.
581 config CONFIG_FEATURE_TEST_64
582 bool "Extend test to 64 bit"
584 depends on CONFIG_TEST
586 Enable 64-bit support in test.
592 touch is used to create or change the access and/or
593 modification timestamp of specified files.
599 tr is used to squeeze, and/or delete characters from standard
600 input, writing to standard output.
602 config CONFIG_FEATURE_TR_CLASSES
603 bool "Enable character classes (such as [:upper:])"
607 Enable character classes, enabling commands such as:
608 tr [:upper:] [:lower:] to convert input into lowercase.
610 config CONFIG_FEATURE_TR_EQUIV
611 bool "Enable equivalence classes"
615 Enable equivalence classes, which essentially add the enclosed
616 character to the current set. For instance, tr [=a=] xyz would
617 replace all instances of 'a' with 'xyz'. This option is mainly
618 useful for cases when no other way of expressing a character
625 true returns an exit code of TRUE (0).
631 tty is used to print the name of the current terminal to
638 uname is used to print system information.
644 uniq is used to remove duplicate lines from a sorted file.
650 usleep is used to pause for a specified number of microseconds.
652 config CONFIG_UUDECODE
656 uudecode is used to decode a uuencoded file.
658 config CONFIG_UUENCODE
662 uuencode is used to uuencode a file.
669 watch is used to execute a program periodically, showing
670 output to the screen.
676 wc is used to print the number of bytes, words, and lines,
682 select CONFIG_FEATURE_UTMP
684 who is used to show who is logged on.
690 whoami is used to print the username of the current
691 user id (same as id -un).
697 yes is used to repeatedly output a specific string, or
698 the default string `y'.
700 comment "Common options for cp and mv"
701 depends on CONFIG_CP || CONFIG_MV
703 config CONFIG_FEATURE_PRESERVE_HARDLINKS
704 bool "Preserve hard links"
706 depends on CONFIG_CP || CONFIG_MV
708 Allow cp and mv to preserve hard links.
710 comment "Common options for ls, more and telnet"
711 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
713 config CONFIG_FEATURE_AUTOWIDTH
714 bool "Calculate terminal & column widths"
716 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
718 This option allows utilities such as 'ls', 'more' and 'telnet'
719 to determine the width of the screen, which can allow them to
720 display additional text or avoid wrapping text onto the next line.
721 If you leave this disabled, your utilities will be especially
722 primitive and will be unable to determine the current screen width.
724 comment "Common options for df, du, ls"
725 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
727 config CONFIG_FEATURE_HUMAN_READABLE
728 bool "Support for human readable output (example 13k, 23M, 235G)"
730 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
732 Allow df, du, and ls to have human readable output.
734 comment "Common options for md5sum, sha1sum"
735 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
737 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
738 bool "Enable -c, -s and -w options"
740 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
742 Enabling the -c options allows files to be checked
743 against pre-calculated hash values.
745 -s and -w are useful options when verifying checksums.