hey many thanks for adding this. yeah ideally we'd merge with tests and docs (the docs are automatically extracted from the comments above the _test() function).

if you can't figure out why mv is failing can you please push the tests so I can take a crack at it? thanks again.

Just create special files (socket, fifo, block, character, not sure which
specifically) in the resources directory to make mv fall.

I can add docs and tests.

thanks, looking forward to it

a block device (mknod test/resources/block b 1 1) causes the following error:

Running test: mv.js
shell.js: internal error
Error: UNKNOWN, unknown error
    at Object.fs.readSync (fs.js:381:19)
    at copyFileSync (/Users/james/src/assets/shelljs/shell.js:1119:20)
    at /Users/james/src/assets/shelljs/shell.js:311:5
    at Array.forEach (native)
    at Object._cp (/Users/james/src/assets/shelljs/shell.js:270:11)
    at Object.cp (/Users/james/src/assets/shelljs/shell.js:1074:23)
    at Object.<anonymous> (/Users/james/src/assets/shelljs/test/mv.js:20:7)
    at Module._compile (module.js:449:26)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)

a character device (mknod test/resources/character c 1 1) and fifo (mkfifo test/resources/fifo) causes the mv test to hang

symlink, file, directory work fine. haven't tested sockets.

added docs and (repetitive) tests. git apparently doesn't track block / character / fifo files, so those have to be created somehow.

ok removed tests for files git doesn't track, the mv tests all pass now

http://superuser.com/questions/440873/git-unable-add-device-file

https://github.com/git/git/blob/master/dir.c#L1028-1036

/*
 * Read a directory tree. We currently ignore anything but
 * directories, regular files and symlinks. That's because git
 * doesn't handle them at all yet. Maybe that will change some
 * day.
 *
 * Also, we ignore the name ".git" (even if it is not a directory).
 * That likely will not change.
 */

fixed