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+# xds-cli: command-line tool for XDS
+
+`xds-cli` is a command-line tool for X(cross) Development System.
+
+## Configuration
+
+`xds-cli` configuration is defined either by environment variables or by
+setting command line options.
+Configuration through environment variables may also be defined in a file that
+will be sourced by `xds-cli` on start-up. Use `--config|-c` option or set
+`XDS_CONFIG` environment variable to specify the config file to use.
+
+So configuration is driven either by environment variables or by command line
+options or using a config file knowing that the following priority order is used:
+
+1. use option value (for example use project ID set by `--id` option),
+1. else use variable `XDS_xxx` (for example `XDS_PROJECT_ID` variable) when a
+   config file is specified with `--config|-c` option,
+1. else use `XDS_xxx` (for example `XDS_PROJECT_ID`) environment variable
+
+<!-- note -->
+**Note:** all parameters after a double dash (--) are considered as the command
+to execute on xds-server.
+<!-- endnote -->
+
+### Global Options / Configuration variables
+
+Following is the list of global options across all sub-commands.
+
+__`--config|-c` option or `XDS_CONFIG` env variable__
+
+Env config file to source on startup
+
+__`--log|-l` option or `XDS_LOGLEVEL` env variable__
+
+Logging level, supported levels are:
+
+- panic,
+- fatal,
+- error,
+- warn,
+- info,
+- debug
+
+Default level is "error".
+
+__`--rpath` option or `XDS_PATH` env variable__
+
+Relative path into project
+
+__`timestamp|-ts` option or `XDS_TIMESTAMP` env variable__
+
+Prefix output with timestamp
+
+__`url` option or `XDS_AGENT_URL` env variable__
+
+Local XDS agent url (default: "localhost:8800")
+
+## Commands
+
+### projects
+
+`projects` (short `prj`) command should be used to managed XDS projects.
+This command supports following sub-commands:
+
+```bash
+add, a      Add a new project
+get         Get a property of a project
+list, ls    List existing projects
+remove, rm  Remove an existing project
+sync        Force synchronization of project sources
+```
+
+Here are some usage examples:
+
+```bash
+# Create/declare a new project
+xds-cli prj add --label "ABeautifulName" --type pm -p /home/seb/xds-workspace/myProject -sp /home/devel/xds-workspace/myProject
+
+# List projects
+xds-cli prj ls
+
+# Delete an existing project
+xds-cli prj rm 8e49
+```
+
+### sdks
+
+`sdks` (alias `sdk`) command should be used to managed cross SDKs.
+This command supports following sub-commands:
+
+```bash
+add, a      Add a new SDK
+get         Get a property of a SDK
+list, ls    List installed SDKs
+remove, rm  Remove an existing SDK
+```
+
+Here are some usage examples:
+
+```bash
+# List existing SDKs
+xds-cli sdks ls
+
+# Get SDK info
+xds-cli sdks get c64d
+```
+
+### exec
+
+`exec` command should be used to exec command through XDS system. For example
+you can use this command to build your project in XDS system.
+This command supports following sub-commands:
+
+`exec` command options are:
+
+__`--id` option or `XDS_PROJECT_ID` env variable (**mandatory option**)__
+
+project ID you want to build
+
+__`--rpath` (short `-p`) or `XDS_RPATH` env variable__
+
+relative path into project
+
+__`--sdkid` (alias `--sdk`) or `XDS_SDK_ID` env variable (**mandatory option**)__
+
+Cross Sdk ID to use to build project
+
+Here are some usage examples:
+
+```bash
+cd $MY_PROJECT_DIR
+mkdir build
+
+# Generate build system using cmake
+xds-cli exec --id=4021 --sdkid=c226 -- "cd build && cmake .."
+
+# Build the project
+xds-cli exec --id=4021 --sdkid=c226 -- "cd build && make all"
+```
+
+In case of `xds-agent` is not running on default url:port (that is `localhost:8800`)
+you can specify the url using `--url` option :
+
+```bash
+xds-cli --url=http://localhost:8800 exec --id=4021 --sdkid=c226 -- "cd build && make all"
+```
+
+### misc
+
+`misc` command allows to execute miscellaneous sub-commands such as:
+
+```bash
+version, v   Get version of XDS agent and XDS server
+status, sts  Get XDS configuration status (including XDS server connection)
+```
+
+Here are some usage examples:
+
+```bash
+xds-cli misc version --verbose
+
+xds-cli misc sts
+```
+
+## How to build
+
+### Prerequisites
+
+ You must install and setup [Go](https://golang.org/doc/install) version 1.8.1 or
+ higher to compile this tool.
+
+### Building
+
+Clone this repo into your `$GOPATH/src/github.com/iotbzh` and use delivered Makefile:
+
+```bash
+ export GOPATH=$(realpath ~/workspace_go)
+ mkdir -p $GOPATH/src/github.com/iotbzh
+ cd $GOPATH/src/github.com/iotbzh
+ git clone https://github.com/iotbzh/xds-cli.git
+ cd xds-cli
+ make
+```
+
+## Debug
+
+Visual Studio Code launcher settings can be found into `.vscode/launch.json`.
+
+>**Tricks:** To debug both `xds-cli` and `xds-agent` (REST API part) or common
+code `xds-common`, it may be useful use the same local sources.
+So you should replace `xds-agent` + `xds-common` in `vendor` directory by a symlink.
+So clone first `xds-agent` + `xds-common` sources next to `xds-cli` directory.
+You should have the following tree:
+
+```bash
+> tree -L 3 src
+src
+|-- github.com
+    |-- iotbzh
+       |-- xds-agent
+       |-- xds-cli
+       |-- xds-common
+```
+
+Then invoke `vendor/debug` Makefile rule to create a symlink inside vendor
+directory :
+
+```bash
+cd src/github.com/iotbzh/xds-cli
+make vendor/debug
+```