api: add list command

public/static/docs/command-reference/list.md

@@ -0,0 +1,138 @@
+# list
+
+List <abbr>repository</abbr> contents, including files and directories tracked
+by DVC (<abbr>data artifacts</abbr>) and by Git.
+
+## Synopsis
+
+```usage
+usage: dvc list [-h] [-q | -v] [-R] [--outs-only] [--rev [REV]] url [path]
+
+positional arguments:
+  url              Location of DVC repository to list.
+  path             Path to a file or directory within the repository.
+```
+
+## Description
+
+List files, dirs and <abbr>data artifacts</abbr> for the pointed URL. The output
+is sorted lexicographically.
+
+With the command you may list all <abbr>data artifacts</abbr> the repo contains.
+Also it works with remote repos and you can list files before trying to get it
+(with `dvc get` or `dvc import`).
+
+The `url` argument specifies the address of the DVC or Git repository containing
+the data source. Both HTTP and SSH protocols are supported for online repos
+(e.g. `[user@]server:project.git`). `url` can also be a local file system path.
+When the url is remote Git URL the content is checkout into temporary directory.
+
+`--outs-only` option allows to filter <abbr>data artifacts</abbr> into the repo,
+so only <abbr>data artifacts</abbr> will be printed.
+
+`path` argument is used for pointing relative path into the repo. So you may use
+it when need to list files for some specific path. With recursive option `-R` it
+allows to filter output by prefix.
+
+Also with `path` argument you may check existense of some file - if the file
+doesn't exist the error would be thrown.
+
+## Options
+
+- `--outs-only` - show only <abbr>data artifacts</abbr>.
+
+- `-R`, `--recursive` - recursively prints the directory. When `path` is not
+  specified the directory is the root of the repo.
+
+- `--rev` - commit hash, branch or tag name, etc. (any
+  [Git revision](https://git-scm.com/docs/revisions)) of the repository to list
+  content for. The latest commit in `master` (tip of the default branch) is used
+  by default when this option is not specified.
+
+- `-h`, `--help` - prints the usage/help message, and exit.
+
+- `-q`, `--quiet` - do not write anything to standard output. Exit with 0 if no
+  problems arise, otherwise 1.
+
+- `-v`, `--verbose` - displays detailed tracing information. when this option is
+  not specified.
+
+## Example: List remote git repo
+
+We can use the command for getting information about remote repository with all
+files, dirs and <abbr>data artifacts</abbr>.
+
+```dvc
+$ dvc list -R https://github.com/iterative/dataset-registry
+
+.gitignore
+README.md
+get-started/.gitignore
+get-started/data.xml
+get-started/data.xml.dvc
+images/.gitignore
+images/dvc-logo-outlines.png
+images/dvc-logo-outlines.png.dvc
+images/owl_sticker.png
+images/owl_sticker.png.dvc
+images/owl_sticker.svg
+...
+```
+
+Or
+
+```dvc
+$ dvc list https://github.com/iterative/dataset-registry
+
+.gitignore
+README.md
+get-started
+images
+tutorial
+use-cases
+```
+
+for getting flat information about the repo
+
+## Example: List the repo with the rev
+
+Another useful case is checking the files for the **specific revision**
+
+```dvc
+$ dvc list -R --rev 7476a858f6200864b5755863c729bff41d0fb045 \
+        https://github.com/iterative/dataset-registry
+
+.gitignore
+README.md
+get-started/.gitignore
+get-started/data.xml
+get-started/data.xml.dvc
+tutorial/nlp/.gitignore
+tutorial/nlp/Posts.xml.zip
+tutorial/nlp/Posts.xml.zip.dvc
+tutorial/nlp/pipeline.zip
+tutorial/nlp/pipeline.zip.dvc
+tutorial/ver/.gitignore
+tutorial/ver/data.zip
+tutorial/ver/data.zip.dvc
+tutorial/ver/new-labels.zip
+```
+
+## Example: Check the path
+
+Before trying to get or import some <abbr>data artifacts</abbr> with `dvc get`
+or `dvc import` we can check their existence with
+
+```dvc
+$ dvc list --outs-only \
+         https://github.com/iterative/dataset-registry \
+         tutorial/nlp/pipeline.zip
+```
+
+Or everything under the prefix
+
+```dvc
+$ dvc list -R --outs-only \
+         https://github.com/iterative/dataset-registry \
+         tutorial
+```

public/static/docs/sidebar.json

@@ -241,6 +241,10 @@
         "label": "install",
         "slug": "install"
       },
+      {
+        "label": "list",
+        "slug": "list"
+      },
       {
         "label": "lock",
         "slug": "lock"