Implement the tree command with find and sed.
$ git clone https://github.com/yone098/tree.git $ chmod +x tree/tree $ tree/tree /home/yone098/test |--tree | |--.git | | |--HEAD | | |--branches | | |--config | | |--description | | |--hooks | | | |--applypatch-msg.sample | | | |--commit-msg.sample | | | |--post-update.sample | | | |--pre-applypatch.sample | | | |--pre-commit.sample | | | |--pre-push.sample | | | |--pre-rebase.sample | | | |--prepare-commit-msg.sample | | | |--update.sample | | |--index | | |--info | | | |--exclude | | |--logs | | | |--HEAD | | | |--refs | | | | |--heads | | | | | |--master | | | | |--remotes | | | | | |--origin | | | | | | |--HEAD | | |--objects | | | |--0b | | | | |--48272afc14c2293262c3d4b3a6004f0fada084 | | | |--20 | | | | |--9161c1d04c0740b3ebfe79b2f338b9e4f391e2 | | | |--37 | | | | |--60b40664edf13847ad0cd529a566d1466fa5be | | | |--59 | | | | |--092ade14f2e940af77b51b9c929bbecebb6a6e | | | | |--8b992a47766c673087a9e2034203ca1229f3f7 | | | |--8e | | | | |--06c6b2edbddece6b417229b168288b666f8110 | | | |--8f | | | | |--9ede51107a7ba79f62e2ce24a20cba65c1e48a | | | |--info | | | |--pack | | |--packed-refs | | |--refs | | | |--heads | | | | |--master | | | |--remotes | | | | |--origin | | | | | |--HEAD | | | |--tags | |--README.md | |--tree