patch should support git extensions:
  new file mode 100755
  the move lines


---------  Current status

The following commands are done:
  basename, bzcat, cat, catv, chroot, chvt, count, df, dirname, dmesg, echo, false,
  hello, mkfifo, oneit, patch, pwd, sha1sum, sleep, sort, sync, tee, touch,
  true, tty, which, yes

The following are partly implemented (usable, but not necessarily complete):
  bzcat/bunzip2: finish threading, implement bunzip2 command line
  cp: implement -HLPs
  help: Implement sub-option merging.
  netcat/nc: Implement remaining command line options.
  sh/toysh: Needs lots more work.
  mdev: Implement exec.
  readlink: Implement -f right.

The following are partial implementations that don't actually do anything yet:
  mke2fs, md5sum, sed

--------  Pending

Stuff I personally wrote back in BusyBox, more or less ready to port:
  halt, losetup, mkswap, mount, poweroff, reboot, seq, sort, switch_root,
  umount

Stuff I worked on in the BusyBox days that needs work:
  sed losetup mount umount setuidgid
  e2fs:
    mke2fs gene2fs e2fsck e2resize tune2fs
  whois (rfc 954)

  rsync

  hex editor

  All the passwd stuff, and crypto.

----------- TODO applets

Low hanging fruit (I have a plan for impelementing these):
  eject, env, head, kill, ln, mkdir, mknod, mktemp, more, mountpoint, mv, nice,
  nohup, detach, killall, pidof, ps, realpath, renice, rm, rmdir, setsid,
  strings, sum, swapoff, swapon, time, touch, uname, uniq, bzip2, uptime,
  usleep, watch, watchdog, wc, whoami, xargs

  Requires the suid bit:
    su

To be implemented from the SUSv3 spec:
  alias, at, batch, bc, bg, break, cal, cd

General todo:
  adjtimex, arping, awk, cksum, clear, cmp, comm, crontab,
  cut, date, dc, dd, dos2unix, du, find, fold, free, fuser, hdparm, hwclock,
  install, length, less, linux32, linux64, logger, ls, od, ntpdate, readahead,
  readprofile, setarch, start-stop-daemon, stat, stty, sysctl, tail, top,
  tr, unix2dos, vi, who, file

passwd:
  addgroup, adduser, chgrp, chmod, chown, delgroup, deluser, id, last,
  login, logname, passwd, sulogin

pending:
  fdisk

compression:
  gunzip, gzip, lzmacat, uncompress, unlzma, unzip, uptime, zcat

init:
  init getty (oneit), runlevel

shellish:
  expr, getopt (echo), printenv, printf, test

obsolete:
  ed, fdflush, fdformat, freeramdisk, fsck.minix, makedevs, mkfs.minix, mt,
  pipe_progress, pivot_root, linuxrc, rdate, rx, uuencode, uudecode

funky:
  dumpkmap, loadkmap, logread, dumpleases

network:
  ether-wake, hostid, hostname, ipaddr, ipcalc, ifconfig, ifdown, ifup, ip,
  iplink, iproute, iptunnel, nameif, netstat, nslookup, dig, ping, ping6,
  route, telnet, tftp, traceroute, vconfig, zcip

dhcp:
  dhcpc dhcpd
    List interfaces, pick interface, broadcast/listen.
    ifconfig eth? up
    discover, offer, request, ack
    Don't daemonize unless we're asked to.
    Show but don't do mode.
    No leases file.  Look at the interface to see if we already have addr.

    ifconfig eth? netmask X addr X
    route add default gw X
    /etc/resolv.conf

wget:
  wget curl ftp tftp ftpget ftpput

daemons:
  crond, dnsd, fakeidentd, httpd, inetd, klogd, syslogd, telnetd, udhcpd

archivers:
  ar, cpio, rpm2cpio, tar, unzip, zip

terminal:
  deallocvt, fbset, loadfont, mesg, openvt, reset, setconsole,
  setkeycodes, setlogcons, vlock
  # chvt

modules:
  insmod, lsmod, modprobe, rmmod

e2fsck:
  mke2fs, chattr, tune2fs, lsattr, fsck

diff
egrep, fgrep, grep
ipcrm, ipcs
hexdump, hexedit
dpkg, dpkg-deb, rpm
run-parts
pushd, popd
make

------------
Notes to self:

Dependency checking:
  To see which files use which config symbols, do:
  sed -nr 's/^[a-zA-Z_].*[* \t]([a-zA-Z_].*)\(.*/\1/p' *.c

toysh:
  autoset terminal size (query xterm with ansi sequence)

tests:
  df
  df .
  df -t ext3
  df -t woot
  df -P
  df -P -k
  df /
  df //
  df /blah/..
  df /usr/..
  df / /
httpd:
  wget http://attacked-host//%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
command line parsing:
  tar cvCfj . blah.tbz filename.txt
  tar -cvC. -jf blah.tbz
  tar -cvfj filename blah
  tar --long-opt=blah --longop2 blah2
  df -a
  df -t tmpfs
  df -at tmpfs

command line:
  head -n2
  head -n 2
  tar xvjfC file.tbz dirname .
  ps ax

Other projects to look at ("sweet 16):
  httpd, dns->, dhcp->, netcat, mtd, iptables, vi
  busybox
  boa: webserver
  Build on: cygwin, MacOS X.
  dnsmasq: forwards dns and dhcp.
  dropbear: needs stunnel to replace openssh.
  mtd: Memory technology device 
  netfilter (iptables)
  uclibc
  uclibc++
  udhcp
  unfs3 (nfs server)
  valgrind
  vim
  x.org

mtd:
  simulators: mtdram, nandsim

  flashcp: write to flash.  (Combine flash_erase and cp.)
    NOR flash can be written with dd/cp/cat.
    NAND flash requires nandwrite and nanddump.
  flash_erase, flash_eraseall: must erase flash before you write it.
    NOR:
      flash_eraseall /dev/mtdX
      cp image /dev/mtdX
    NAND: nandwrite image/dev/mtdX
  nandwrite, nanddump: For nand flash (checks to make sure it _is_ NAND.)
  flash_lock, flash_unlock, flash_info
  flash_otp_info, flash_otp_dump: One Time Programming (OTP sector)
  mtd_debug

  ftl_check, ftl_format, docfdisk, doc_loadbios, nftldump, nftl_format:
    Microsoft Flash Translation Layer.  (Disc on Chip) unused, historic.
  rfddump, rfdformat: "some exotic flash translation layer".

  jffs2dump, mkfs.jffs, mkfs.jffs2, sumtool: Journaling Fast Filesystem


kexec: http://www.xmission.com/~ebiederm/files/kexec/

bunzip: svn-7665

error_exit()
  setjmp/longjmp stuff.
  # initialize exitval to nonzero?
get_optflags()
getline()
  allocate own buffer
  handle embedded NUL bytes.

make multiplexer optional?  (Nope: infrastructure still needed.)

Web page:
  old toys scripts?

Each toy has:
  name
  main()
  struct data;
  usage (short long example info)
  path (/usr/sbin)

Makefile
  static
  standalone
  clean
  distclean
  config

  Building out of tree.
  blueberry.py

Configuration system:
  menuconfig

Help system:
  man pages
  html pages
  builtin help:
    none/terse/verbose
    compressed


Remove xfopen: we have get_line() on an fd.

Patch:
  offset at which patches apply
    Location of posibly reversed patches
  Show failing hunk