[Solved]-Command line tools download in Xcode disappeared after Mavericks-eclipse

i had problems with the command line tools as well after upgrading to mavericks, despite having updated xcode, and i am quite sure i also installed the command line tools. still, you can add them "by hand" downloading from apple site. i am not sure if it is any sort of bug of such, but anyway, i recommend you to download the latest mavericks' command line tools (late october) on apple's developer site (needs free registration)

on my system in terminal:

/usr/bin/llvm-gcc-4.2
produces:
/usr/bin/llvm-gcc-4.2

/usr/bin/llvm-gcc-4.2
is linked to :
/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2

also
$ which llvm-gcc
produces:
/usr/bin/llvm-gcc
and
/usr/bin/llvm-gcc is linked to /usr/bin/clang

note that apple no longer provides llvm-gcc as an option in xcode so perhaps it is no longer supplied as a command-line tool.