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
134 df reports the amount of disk space used and available
141 diff compares two files or directories and outputs the
142 differences between them in a form that can be given to
145 config CONFIG_FEATURE_DIFF_BINARY
146 bool "Enable checks for binary files"
148 depends on CONFIG_DIFF
150 This option enables support for checking for binary files
151 before a comparison is carried out.
153 config CONFIG_FEATURE_DIFF_DIR
154 bool "Enable directory support"
156 depends on CONFIG_DIFF
158 This option enables support for directory and subdirectory
161 config CONFIG_FEATURE_DIFF_MINIMAL
162 bool "Enable -d option to find smaller sets of changes"
164 depends on CONFIG_DIFF
166 Enabling this option allows the use of -d to make diff
167 try hard to find the smallest possible set of changes.
169 config CONFIG_DIRNAME
173 dirname is used to strip a non-directory suffix from
176 config CONFIG_DOS2UNIX
177 bool "dos2unix/unix2dos"
180 dos2unix is used to convert a text file from DOS format to
181 UNIX format, and vice versa.
183 config CONFIG_UNIX2DOS
186 depends on CONFIG_DOS2UNIX
188 unix2dos is used to convert a text file from UNIX format to
189 DOS format, and vice versa.
192 bool "du (default blocksize of 512 bytes)"
195 du is used to report the amount of disk space used
198 config CONFIG_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
199 bool "Use a default blocksize of 1024 bytes (1K)"
203 Use a blocksize of (1K) instead of the default 512b.
206 bool "echo (basic SuSv3 version taking no options)"
209 echo is used to print a specified string to stdout.
211 # this entry also appears in shell/Config.in, next to the echo builtin
212 config CONFIG_FEATURE_FANCY_ECHO
213 bool "Enable echo options (-n and -e)"
215 depends on CONFIG_ECHO
217 This adds options (-n and -e) to echo.
223 env is used to set an environment variable and run
224 a command; without options it displays the current
231 expr is used to calculate numbers and print the result
234 config CONFIG_EXPR_MATH_SUPPORT_64
235 bool "Extend Posix numbers support to 64 bit"
237 depends on CONFIG_EXPR
239 Enable 64-bit math support in the expr applet. This will make
240 the applet slightly larger, but will allow computation with very
247 false returns an exit code of FALSE (1).
253 Wrap text to fit a specific width.
259 head is used to print the first specified number of lines
262 config CONFIG_FEATURE_FANCY_HEAD
263 bool "Enable head options (-c, -q, and -v)"
265 depends on CONFIG_HEAD
267 This enables the head options (-c, -q, and -v).
273 hostid prints the numeric identifier (in hexadecimal) for
280 id displays the current user and group ID names.
282 config CONFIG_INSTALL
286 Copy files and set attributes.
292 length is used to print out the length of a specified string.
298 ln is used to create hard or soft links between files.
300 config CONFIG_LOGNAME
304 logname is used to print the current user's login name.
310 ls is used to list the contents of directories.
312 config CONFIG_FEATURE_LS_FILETYPES
313 bool "Enable filetyping options (-p and -F)"
317 Enable the ls options (-p and -F).
319 config CONFIG_FEATURE_LS_FOLLOWLINKS
320 bool "Enable symlinks dereferencing (-L)"
324 Enable the ls option (-L).
326 config CONFIG_FEATURE_LS_RECURSIVE
327 bool "Enable recursion (-R)"
331 Enable the ls option (-R).
333 config CONFIG_FEATURE_LS_SORTFILES
334 bool "Sort the file names"
338 Allow ls to sort file names alphabetically.
340 config CONFIG_FEATURE_LS_TIMESTAMPS
341 bool "Show file timestamps"
345 Allow ls to display timestamps for files.
347 config CONFIG_FEATURE_LS_USERNAME
348 bool "Show username/groupnames"
352 Allow ls to display username/groupname for files.
354 config CONFIG_FEATURE_LS_COLOR
355 bool "Allow use of color to identify file types"
359 This enables the --color option to ls.
361 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
362 bool "Produce colored ls output by default"
364 depends on CONFIG_FEATURE_LS_COLOR
366 Saying yes here will turn coloring on by default,
367 even if no "--color" option is given to the ls command.
368 This is not recommended, since the colors are not
369 configurable, and the output may not be legible on
376 md5sum is used to print or check MD5 checksums.
382 mkdir is used to create directories with the specified names.
388 mkfifo is used to create FIFOs (named pipes).
389 The `mknod' program can also create FIFOs.
395 mknod is used to create FIFOs or block/character special
396 files with the specified names.
402 mv is used to move or rename files or directories.
408 nice runs a program with modified scheduling priority.
414 run a command immune to hangups, with output to a non-tty.
420 od is used to dump binary files in octal and other formats.
422 config CONFIG_PRINTENV
426 printenv is used to print all or part of environment.
432 printf is used to format and print specified strings.
433 It's similar to `echo' except it has more options.
439 pwd is used to print the current directory.
441 config CONFIG_REALPATH
445 Return the canonicalized absolute pathname.
446 This isn't provided by GNU shellutils, but where else does it belong.
452 rm is used to remove files or directories.
458 rmdir is used to remove empty directories.
464 print a sequence of numbers
466 config CONFIG_SHA1SUM
470 Compute and check SHA1 message digest
473 bool "sleep (single integer arg with no suffix)"
476 sleep is used to pause for a specified number of seconds,
478 config CONFIG_FEATURE_FANCY_SLEEP
479 bool "Enable multiple integer args and optional time suffixes"
481 depends on CONFIG_SLEEP
483 Allow sleep to pause for specified minutes, hours, and days.
489 sort is used to sort lines of text in specified files.
491 config CONFIG_FEATURE_SORT_BIG
492 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
494 depends on CONFIG_SORT
496 Without this, sort only supports -r, -u, and an integer version
497 of -n. Selecting this adds sort keys, floating point support, and
498 more. This adds a little over 3k to a nonstatic build on x86.
500 The SuSv3 sort standard is available at:
501 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
507 display file or filesystem status.
509 config CONFIG_FEATURE_STAT_FORMAT
510 bool "Enable custom formats (-c)"
512 depends on CONFIG_STAT
514 Without this, stat will not support the '-c format' option where
515 users can pass a custom format string for output. This adds about
516 7k to a nonstatic build on amd64.
522 stty is used to change and print terminal line settings.
528 checksum and count the blocks in a file
534 sync is used to flush filesystem buffers.
540 tail is used to print the last specified number of lines
543 config CONFIG_FEATURE_FANCY_TAIL
544 bool "Enable extra tail options (-q, -s, and -v)"
546 depends on CONFIG_TAIL
548 The options (-q, -s, and -v) are provided by GNU tail, but
549 are not specific in the SUSv3 standard.
555 tee is used to read from standard input and write
556 to standard output and files.
558 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
559 bool "Enable block i/o (larger/faster) instead of byte i/o."
561 depends on CONFIG_TEE
563 Enable this option for a faster tee, at expense of size.
569 test is used to check file types and compare values,
570 returning an appropriate exit code. The shells (ash
571 and bash) have test builtin.
573 config CONFIG_FEATURE_TEST_64
574 bool "Extend test to 64 bit"
576 depends on CONFIG_TEST
578 Enable 64-bit support in test.
584 touch is used to create or change the access and/or
585 modification timestamp of specified files.
591 tr is used to squeeze, and/or delete characters from standard
592 input, writing to standard output.
594 config CONFIG_FEATURE_TR_CLASSES
595 bool "Enable character classes (such as [:upper:])"
599 Enable character classes, enabling commands such as:
600 tr [:upper:] [:lower:] to convert input into lowercase.
602 config CONFIG_FEATURE_TR_EQUIV
603 bool "Enable equivalence classes"
607 Enable equivalence classes, which essentially add the enclosed
608 character to the current set. For instance, tr [=a=] xyz would
609 replace all instances of 'a' with 'xyz'. This option is mainly
610 useful for cases when no other way of expressing a character
617 true returns an exit code of TRUE (0).
623 tty is used to print the name of the current terminal to
630 uname is used to print system information.
636 uniq is used to remove duplicate lines from a sorted file.
642 usleep is used to pause for a specified number of microseconds.
644 config CONFIG_UUDECODE
648 uudecode is used to decode a uuencoded file.
650 config CONFIG_UUENCODE
654 uuencode is used to uuencode a file.
661 watch is used to execute a program periodically, showing
662 output to the screen.
668 wc is used to print the number of bytes, words, and lines,
674 select CONFIG_FEATURE_UTMP
676 who is used to show who is logged on.
682 whoami is used to print the username of the current
683 user id (same as id -un).
689 yes is used to repeatedly output a specific string, or
690 the default string `y'.
692 comment "Common options for cp and mv"
693 depends on CONFIG_CP || CONFIG_MV
695 config CONFIG_FEATURE_PRESERVE_HARDLINKS
696 bool "Preserve hard links"
698 depends on CONFIG_CP || CONFIG_MV
700 Allow cp and mv to preserve hard links.
702 comment "Common options for ls, more and telnet"
703 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
705 config CONFIG_FEATURE_AUTOWIDTH
706 bool "Calculate terminal & column widths"
708 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
710 This option allows utilities such as 'ls', 'more' and 'telnet'
711 to determine the width of the screen, which can allow them to
712 display additional text or avoid wrapping text onto the next line.
713 If you leave this disabled, your utilities will be especially
714 primitive and will be unable to determine the current screen width.
716 comment "Common options for df, du, ls"
717 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
719 config CONFIG_FEATURE_HUMAN_READABLE
720 bool "Support for human readable output (example 13k, 23M, 235G)"
722 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
724 Allow df, du, and ls to have human readable output.
726 comment "Common options for md5sum, sha1sum"
727 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
729 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
730 bool "Enable -c, -s and -w options"
732 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
734 Enabling the -c options allows files to be checked
735 against pre-calculated hash values.
737 -s and -w are useful options when verifying checksums.