# Definition issue

**URL:** <https://discuss.ipfs.tech/t/definition-issue/1936>\
**Category:** Help\
**Created:** [January 27, 2018, 1:55pm UTC](https://discuss.ipfs.tech/t/definition-issue/1936 "2018-01-27T13:55:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tim](https://avatars.discourse-cdn.com/v4/letter/t/ce73a5/32.png) [@Tim](https://discuss.ipfs.tech/u/Tim)\
**Post date:** [January 27, 2018, 1:55pm UTC](https://discuss.ipfs.tech/t/definition-issue/1936/1 "2018-01-27T13:55:21Z")

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when I read the source code of go-ipfs,I am always confused about some words. like GC, fsrepo…I even dont know what they are. So is there any document for these definitions?  
 ![](https://us1.discourse-cdn.com/flex020/uploads/ipfs1/original/1X/a38dc27704c1f8c011778841517fc66f54a49bff.png)

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**Author:** ![VictorBjelkholm](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ipfs.tech/victorbjelkholm/32/10_2.png) [@VictorBjelkholm](https://discuss.ipfs.tech/u/VictorBjelkholm)\
**Post date:** [January 27, 2018, 2:12pm UTC](https://discuss.ipfs.tech/t/definition-issue/1936/2 "2018-01-27T14:12:33Z")

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We don’t have any glossary for terms but by using a combination of the `--help` flag and Google, should give you some information at least.

Using GC as a first example, running `ipfs repo gc --help` gives you this:

```auto
➜ jenkins git:(websites) ✗ ipfs repo gc --help
USAGE
  ipfs repo gc - Perform a garbage collection sweep on the repo.

SYNOPSIS
  ipfs repo gc [--quiet | -q] [--stream-errors]

OPTIONS

  -q, --quiet bool - Write minimal output. Default: false.
  --stream-errors bool - Stream errors. Default: false.

DESCRIPTION

  'ipfs repo gc' is a plumbing command that will sweep the local
  set of stored objects and remove ones that are not pinned in
  order to reclaim hard disk space.

```

Regarding `fsrepo`, you could Google the term and [https://github.com/ipfs/specs/tree/master/repo/fs-repo](https://github.com/ipfs/specs/tree/master/repo/fs-repo) should be the first result, leading to the specification of fs-repo so you can figure out exactly what it means.

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**Author:** ![Tim](https://avatars.discourse-cdn.com/v4/letter/t/ce73a5/32.png) [@Tim](https://discuss.ipfs.tech/u/Tim)\
**Post date:** [January 27, 2018, 2:41pm UTC](https://discuss.ipfs.tech/t/definition-issue/1936/3 "2018-01-27T14:41:47Z")

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thank you for detailed description，got it