Basic command line utilities, the Node.js way

This project is an implementation of the GNU Coreutils commands in Javascript, adding an object-oriented design and some Node.js stream features while we were there :-)

This project has got inspiration and stolen borrowed code fragments from shelljs and bashful projects, and has implemented some ideas from TermKit. The main characteristic diferences from GNU Coreutils are

• objects, not text: standard coreutils are independent programs where the only one interface with the exterior world are character streams derived from the usage on a terminal, so this text needs to be parsed each time between commands. Coreutils.js is designed as a library of functions, so high-level objects can be passed between them, and each one of them implement an inspect method to be used when printing their content on a terminal to show their usual behaviour.
• streams, not lists: for commands that generates a list of values, Coreutils.js return a Stream object instead of an Array (split data in time instead of space) since they are easily convertible between them and has a better performance and offers more flexibility for big data sets, reason why the Streams API is the standard interface in Node.js modules allowing them to be connected to others. Also each returned stream has an added type attribute to show the type of their contents and help to process them later.

• cat needs show-nonprinting
• cksum
• comm
• csplit
• cut
• expand
• fmt
• fold
• head needs implement bytes counting
• join
• md5sum
• nl
• od
• paste
• pr
• ptx
• sha1sum
• sort
• split
• sum
• tac
• tail
• tr
• unexpand
• uniq
• wc

• chgrp
• chmod
• chown
• cp
• dd
• df
• dir
• dircolors
• du
• install
• ln
• ls
• mkdir
• mkfifo
• mknod
• mv
• rm
• rmdir
• sync
• touch
• vdir

• basename
• chroot
• date needs arguments
• dirname
• echo needs escape of backslash
• env
• expr
• groups
• hostname
• id
• logname
• pathchk
• printenv
• printf
• sleep
• tee
• test needs fd open on terminal and inline operators
• tty
• users
• who
• whoami
• yes
• nice
• nohup
• su
• stty
• uname

• alias
• bg
• cd needs arguments
• command
• false
• fc
• fg
• getopts
• jobs
• kill
• newgrp
• pwd
• read
• true
• umask
• unalias
• wait

• bind
• builtin
• caller
• compgen
• complete
• compopt
• coproc
• declare
• dirs
• disown
• enable
• eval
• exec
• exit
• export
• hash
• help
• history
• let
• local
• logout
• mapfile
• popd
• printf
• pushd
• readarray
• readonly
• set
• shift
• shopt
• source
• suspend
• time
• times
• trap
• type
• typeset
• ulimit
• unset

• free
• grep needs arguments
• shasum
• sha256sum
• uptime