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.
32 Display nonprinting characters as escape sequences (like some
33 implementations' cat -v option).
35 config CONFIG_FEATURE_CAT_ESCAPE
46 chgrp is used to change the group ownership of files.
52 chmod is used to change the access permission of files.
58 chown is used to change the user and/or group ownership
65 chroot is used to change the root directory and run a command.
66 The default command is `/bin/sh'.
72 cksum is used to calculate the CRC32 checksum of a file.
78 cmp is used to compare two files and returns the result
85 comm is used to compare two files line by line and return
86 a three-column output.
92 cp is used to copy files and directories.
98 cut is used to print selected parts of lines from
105 date is used to set the system date or display the
106 current time in the given format.
108 config CONFIG_FEATURE_DATE_ISOFMT
109 bool "Enable ISO date format output (-I)"
111 depends on CONFIG_DATE
113 Enable option (-I) to output an ISO-8601 compliant
120 dd copies a file (from standard input to standard output,
121 by default) using specific input and output blocksizes,
122 while optionally performing conversions on it.
124 config CONFIG_FEATURE_DD_SIGNAL_HANDLING
125 bool "Enable DD signal handling for status reporting"
129 sending a SIGUSR1 signal to a running `dd' process makes it
130 print to standard error the number of records read and written
131 so far, then to resume copying.
133 $ dd if=/dev/zero of=/dev/null& pid=$! $ kill -USR1 $pid; sleep 1; kill $pid
134 10899206+0 records in 10899206+0 records out
136 config CONFIG_FEATURE_DD_IBS_OBS
137 bool "Enable ibs, obs and conv options"
141 Enables support for writing a certain number of bytes in and out,
142 at a time, and performing conversions on the data stream.
148 df reports the amount of disk space used and available
155 diff compares two files or directories and outputs the
156 differences between them in a form that can be given to
159 config CONFIG_FEATURE_DIFF_BINARY
160 bool "Enable checks for binary files"
162 depends on CONFIG_DIFF
164 This option enables support for checking for binary files
165 before a comparison is carried out.
167 config CONFIG_FEATURE_DIFF_DIR
168 bool "Enable directory support"
170 depends on CONFIG_DIFF
172 This option enables support for directory and subdirectory
175 config CONFIG_FEATURE_DIFF_MINIMAL
176 bool "Enable -d option to find smaller sets of changes"
178 depends on CONFIG_DIFF
180 Enabling this option allows the use of -d to make diff
181 try hard to find the smallest possible set of changes.
183 config CONFIG_DIRNAME
187 dirname is used to strip a non-directory suffix from
190 config CONFIG_DOS2UNIX
191 bool "dos2unix/unix2dos"
194 dos2unix is used to convert a text file from DOS format to
195 UNIX format, and vice versa.
197 config CONFIG_UNIX2DOS
200 depends on CONFIG_DOS2UNIX
202 unix2dos is used to convert a text file from UNIX format to
203 DOS format, and vice versa.
206 bool "du (default blocksize of 512 bytes)"
209 du is used to report the amount of disk space used
212 config CONFIG_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
213 bool "Use a default blocksize of 1024 bytes (1K)"
217 Use a blocksize of (1K) instead of the default 512b.
220 bool "echo (basic SuSv3 version taking no options)"
223 echo is used to print a specified string to stdout.
225 # this entry also appears in shell/Config.in, next to the echo builtin
226 config CONFIG_FEATURE_FANCY_ECHO
227 bool "Enable echo options (-n and -e)"
229 depends on CONFIG_ECHO
231 This adds options (-n and -e) to echo.
237 env is used to set an environment variable and run
238 a command; without options it displays the current
241 config CONFIG_FEATURE_ENV_LONG_OPTIONS
242 bool "Enable long options"
244 depends on CONFIG_ENV && CONFIG_GETOPT_LONG
246 Support long options for the env applet.
252 expr is used to calculate numbers and print the result
255 config CONFIG_EXPR_MATH_SUPPORT_64
256 bool "Extend Posix numbers support to 64 bit"
258 depends on CONFIG_EXPR
260 Enable 64-bit math support in the expr applet. This will make
261 the applet slightly larger, but will allow computation with very
268 false returns an exit code of FALSE (1).
274 Wrap text to fit a specific width.
280 head is used to print the first specified number of lines
283 config CONFIG_FEATURE_FANCY_HEAD
284 bool "Enable head options (-c, -q, and -v)"
286 depends on CONFIG_HEAD
288 This enables the head options (-c, -q, and -v).
294 hostid prints the numeric identifier (in hexadecimal) for
301 id displays the current user and group ID names.
303 config CONFIG_INSTALL
307 Copy files and set attributes.
309 config CONFIG_FEATURE_INSTALL_LONG_OPTIONS
310 bool "Enable long options"
312 depends on CONFIG_INSTALL && CONFIG_GETOPT_LONG
314 Support long options for the install applet.
320 length is used to print out the length of a specified string.
326 ln is used to create hard or soft links between files.
328 config CONFIG_LOGNAME
332 logname is used to print the current user's login name.
338 ls is used to list the contents of directories.
340 config CONFIG_FEATURE_LS_FILETYPES
341 bool "Enable filetyping options (-p and -F)"
345 Enable the ls options (-p and -F).
347 config CONFIG_FEATURE_LS_FOLLOWLINKS
348 bool "Enable symlinks dereferencing (-L)"
352 Enable the ls option (-L).
354 config CONFIG_FEATURE_LS_RECURSIVE
355 bool "Enable recursion (-R)"
359 Enable the ls option (-R).
361 config CONFIG_FEATURE_LS_SORTFILES
362 bool "Sort the file names"
366 Allow ls to sort file names alphabetically.
368 config CONFIG_FEATURE_LS_TIMESTAMPS
369 bool "Show file timestamps"
373 Allow ls to display timestamps for files.
375 config CONFIG_FEATURE_LS_USERNAME
376 bool "Show username/groupnames"
380 Allow ls to display username/groupname for files.
382 config CONFIG_FEATURE_LS_COLOR
383 bool "Allow use of color to identify file types"
385 depends on CONFIG_LS && CONFIG_GETOPT_LONG
387 This enables the --color option to ls.
389 config CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
390 bool "Produce colored ls output by default"
392 depends on CONFIG_FEATURE_LS_COLOR
394 Saying yes here will turn coloring on by default,
395 even if no "--color" option is given to the ls command.
396 This is not recommended, since the colors are not
397 configurable, and the output may not be legible on
404 md5sum is used to print or check MD5 checksums.
410 mkdir is used to create directories with the specified names.
412 config CONFIG_FEATURE_MKDIR_LONG_OPTIONS
413 bool "Enable long options"
415 depends on CONFIG_MKDIR && CONFIG_GETOPT_LONG
417 Support long options for the mkdir applet.
423 mkfifo is used to create FIFOs (named pipes).
424 The `mknod' program can also create FIFOs.
430 mknod is used to create FIFOs or block/character special
431 files with the specified names.
437 mv is used to move or rename files or directories.
439 config CONFIG_FEATURE_MV_LONG_OPTIONS
440 bool "Enable long options"
442 depends on CONFIG_MV && CONFIG_GETOPT_LONG
444 Support long options for the mv applet.
450 nice runs a program with modified scheduling priority.
456 run a command immune to hangups, with output to a non-tty.
462 od is used to dump binary files in octal and other formats.
464 config CONFIG_PRINTENV
468 printenv is used to print all or part of environment.
474 printf is used to format and print specified strings.
475 It's similar to `echo' except it has more options.
481 pwd is used to print the current directory.
483 config CONFIG_REALPATH
487 Return the canonicalized absolute pathname.
488 This isn't provided by GNU shellutils, but where else does it belong.
494 rm is used to remove files or directories.
500 rmdir is used to remove empty directories.
506 print a sequence of numbers
508 config CONFIG_SHA1SUM
512 Compute and check SHA1 message digest
515 bool "sleep (single integer arg with no suffix)"
518 sleep is used to pause for a specified number of seconds,
520 config CONFIG_FEATURE_FANCY_SLEEP
521 bool "Enable multiple integer args and optional time suffixes"
523 depends on CONFIG_SLEEP
525 Allow sleep to pause for specified minutes, hours, and days.
531 sort is used to sort lines of text in specified files.
533 config CONFIG_FEATURE_SORT_BIG
534 bool "full SuSv3 compliant sort (Support -ktcsbdfiozgM)"
536 depends on CONFIG_SORT
538 Without this, sort only supports -r, -u, and an integer version
539 of -n. Selecting this adds sort keys, floating point support, and
540 more. This adds a little over 3k to a nonstatic build on x86.
542 The SuSv3 sort standard is available at:
543 http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html
549 display file or filesystem status.
551 config CONFIG_FEATURE_STAT_FORMAT
552 bool "Enable custom formats (-c)"
554 depends on CONFIG_STAT
556 Without this, stat will not support the '-c format' option where
557 users can pass a custom format string for output. This adds about
558 7k to a nonstatic build on amd64.
564 stty is used to change and print terminal line settings.
570 checksum and count the blocks in a file
576 sync is used to flush filesystem buffers.
582 tail is used to print the last specified number of lines
585 config CONFIG_FEATURE_FANCY_TAIL
586 bool "Enable extra tail options (-q, -s, and -v)"
588 depends on CONFIG_TAIL
590 The options (-q, -s, and -v) are provided by GNU tail, but
591 are not specific in the SUSv3 standard.
597 tee is used to read from standard input and write
598 to standard output and files.
600 config CONFIG_FEATURE_TEE_USE_BLOCK_IO
601 bool "Enable block i/o (larger/faster) instead of byte i/o."
603 depends on CONFIG_TEE
605 Enable this option for a faster tee, at expense of size.
611 test is used to check file types and compare values,
612 returning an appropriate exit code. The shells (ash
613 and bash) have test builtin.
615 config CONFIG_FEATURE_TEST_64
616 bool "Extend test to 64 bit"
618 depends on CONFIG_TEST
620 Enable 64-bit support in test.
626 touch is used to create or change the access and/or
627 modification timestamp of specified files.
633 tr is used to squeeze, and/or delete characters from standard
634 input, writing to standard output.
636 config CONFIG_FEATURE_TR_CLASSES
637 bool "Enable character classes (such as [:upper:])"
641 Enable character classes, enabling commands such as:
642 tr [:upper:] [:lower:] to convert input into lowercase.
644 config CONFIG_FEATURE_TR_EQUIV
645 bool "Enable equivalence classes"
649 Enable equivalence classes, which essentially add the enclosed
650 character to the current set. For instance, tr [=a=] xyz would
651 replace all instances of 'a' with 'xyz'. This option is mainly
652 useful for cases when no other way of expressing a character
659 true returns an exit code of TRUE (0).
665 tty is used to print the name of the current terminal to
672 uname is used to print system information.
678 uniq is used to remove duplicate lines from a sorted file.
684 usleep is used to pause for a specified number of microseconds.
686 config CONFIG_UUDECODE
690 uudecode is used to decode a uuencoded file.
692 config CONFIG_UUENCODE
696 uuencode is used to uuencode a file.
703 watch is used to execute a program periodically, showing
704 output to the screen.
710 wc is used to print the number of bytes, words, and lines,
716 select CONFIG_FEATURE_UTMP
718 who is used to show who is logged on.
724 whoami is used to print the username of the current
725 user id (same as id -un).
731 yes is used to repeatedly output a specific string, or
732 the default string `y'.
734 comment "Common options for cp and mv"
735 depends on CONFIG_CP || CONFIG_MV
737 config CONFIG_FEATURE_PRESERVE_HARDLINKS
738 bool "Preserve hard links"
740 depends on CONFIG_CP || CONFIG_MV
742 Allow cp and mv to preserve hard links.
744 comment "Common options for ls, more and telnet"
745 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
747 config CONFIG_FEATURE_AUTOWIDTH
748 bool "Calculate terminal & column widths"
750 depends on CONFIG_LS || CONFIG_MORE || CONFIG_TELNET
752 This option allows utilities such as 'ls', 'more' and 'telnet'
753 to determine the width of the screen, which can allow them to
754 display additional text or avoid wrapping text onto the next line.
755 If you leave this disabled, your utilities will be especially
756 primitive and will be unable to determine the current screen width.
758 comment "Common options for df, du, ls"
759 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
761 config CONFIG_FEATURE_HUMAN_READABLE
762 bool "Support for human readable output (example 13k, 23M, 235G)"
764 depends on CONFIG_DF || CONFIG_DU || CONFIG_LS
766 Allow df, du, and ls to have human readable output.
768 comment "Common options for md5sum, sha1sum"
769 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
771 config CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
772 bool "Enable -c, -s and -w options"
774 depends on CONFIG_MD5SUM || CONFIG_SHA1SUM
776 Enabling the -c options allows files to be checked
777 against pre-calculated hash values.
779 -s and -w are useful options when verifying checksums.