The GNU Core Utilities are the basic file, shell and text manipulation utilities of the GNU operating system. These are the core utilities which are expected to exist on every operating system.

Previously these utilities were offered as three individual sets of GNU utilities, Fileutils, Shellutils, and Textutils. Those three have been combined into a single set of utilities called Coreutils.

Fileutils, Shellutils, and Textutils have been combined into the GNU Coreutils package. All further development and discussion is now taking place as Coreutils. The last separate versions were fileutils-4.1.11, textutils-2.1, and sh-utils-2.0.15. The first major release of coreutils-5.0 was announced on Fri, 4 April 2003.

참고링크 [Bottom] [Top]

• GNU Core Utilities - http://www.gnu.org/software/coreutils/

  • GNU coreutils manual - http://www.gnu.org/software/coreutils/manual/

• GnuWin32 - http://sourceforge.net/projects/gnuwin32/

Fileutils [Bottom] [Top]

The GNU File Utilities are the basic file-manipulation utilities of the GNU operating system.

• Utility	Description
  chgrp	Changes file group ownership.
  chown	Changes file ownership.
  chmod	Changes file permissions.
  cp	Copies files.
  dd	Copies and converts a file.
  df	Shows disk free space on filesystems.
  dir	Gives a brief directory listing.
  dircolors	Setup program for the color output of GNU ls.
  du	Shows disk usage on filesystems.
  install	Copies file and sets its permissions.
  ln	Creates file links.
  ls	Lists directory contents.
  mkdir	Creates directories.
  mkfifo	Creates FIFOs (named pipes).
  mknod	Creates special files.
  mv	Moves files.
  rm	Removes (deletes) files.
  rmdir	Removes empty directories.
  shred	Destroy data in files.
  sync	Synchronizes filesystem buffers and disk.
  touch	Changes file timestamps.
  vdir	Long directory listing.

Shellutils [Bottom] [Top]

The GNU Shell Utilities are the basic shell-manipulation utilities of the GNU Operating System.

• Utility	Description
  [	Check file types and compare values.
  basename	Removes the path prefix from a given pathname.
  chroot	Changes the root directory.
  date	Prints/sets the system date and time.
  dirname	Removes the last level or filename from a given pathname.
  echo	Prints a line of text.
  env	Displays/modifies the environment.
  expr	Evaluates expressions.
  factor	Prints prime factors.
  false	Returns an unsuccessful exit status.
  groups	Print the groups that the user is a member of.
  hostid	Print the numeric identifier for the current host.
  hostname	Print or set the machine name.
  id	Print real/effective uid/gid.
  logname	Print current login name.
  nice	Modify scheduling priority.
  nohup	Allows a command to continue running after logging out.
  pathchk	Check file name portability.
  pinky	Lightweight finger.
  printenv	Prints environment variables.
  printf	Formats and prints data.
  pwd	Print the current working directory.
  seq	Print numeric sequences.
  sleep	Suspends execution for a specified time.
  stty	Print/change terminal settings.
  su	Allows you to adopt the id of another user or superuser.
  tee	Sends output to multiple files.
  test	Evaluates an expression.
  true	Returns a successful exit status.
  tty	Print terminal name.
  uname	Print system information.
  users	Print current user names.
  who	Print a list of all users currently logged in.
  whoami	Print effective user id.
  yes	Print a string repeatedly.

Textutils [Bottom] [Top]

The GNU Text Utilities are the basic text-manipulation utilities of the GNU operating system.

• Utility	Description
  cat	concatenate files and print to the standard output.
  cksum	checksum and count the bytes in a file.
  comm	compare two sorted files line by line.
  csplit	split a file into sections determined by context lines.
  cut	remove sections from each line of files.
  expand	convert tabs to spaces.
  fmt	simple optimal text formatter.
  fold	wrap each input line to fit in specified width.
  join	join lines of two files on a common field.
  md5sum	compute and check MD5 message digest.
  nl	number lines of files.
  od	dump files in octal and other formats.
  paste	merge lines of files.
  pr	convert text files for printing.
  ptx	produce a permuted index of file contents.
  sort	sort lines of text files.
  split	split a file into pieces.
  sum	checksum and count the blocks in a file.
  tac	concatenate and print files in reverse.
  tail	output the last part of files.
  tr	translate or delete characters.
  tsort	perform topological sort.
  unexpand	convert spaces to tabs.
  uniq	remove duplicate lines from a sorted file.
  wc	print the number of bytes, words, and lines in files.
  head	output the first part of files.

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