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1 # signal-cli
2
3 signal-cli is a commandline interface for [libsignal-service-java](https://github.com/WhisperSystems/libsignal-service-java). It supports registering, verifying, sending and receiving messages.
4 To be able to link to an existing Signal-Android/signal-cli instance, signal-cli uses a [patched libsignal-service-java](https://github.com/AsamK/libsignal-service-java), because libsignal-service-java does not yet support [provisioning as a slave device](https://github.com/WhisperSystems/libsignal-service-java/pull/21).
5 For registering you need a phone number where you can receive SMS or incoming calls.
6 signal-cli is primarily intended to be used on servers to notify admins of important events. For this use-case, it has a dbus interface, that can be used to send messages from any programming language that has dbus bindings.
7
8 ## Installation
9
10 You can [build signal-cli](#building) yourself, or use the [provided binary files](https://github.com/AsamK/signal-cli/releases/latest), which should work on Linux, macOS and Windows. For Arch Linux there is also a [package in AUR](https://aur.archlinux.org/packages/signal-cli/) and there is a [FreeBSD port](https://www.freshports.org/net-im/signal-cli) available as well. You need to have at least JRE 11 installed, to run signal-cli.
11
12 ### Install system-wide on Linux
13 See [latest version](https://github.com/AsamK/signal-cli/releases).
14 ```sh
15 export VERSION=<latest version, format "x.y.z">
16 wget https://github.com/AsamK/signal-cli/releases/download/v"${VERSION}"/signal-cli-"${VERSION}".tar.gz
17 sudo tar xf signal-cli-"${VERSION}".tar.gz -C /opt
18 sudo ln -sf /opt/signal-cli-"${VERSION}"/bin/signal-cli /usr/local/bin/
19 ```
20 You can find further instructions on the Wiki:
21 - [Quickstart](https://github.com/AsamK/signal-cli/wiki/Quickstart)
22 - [DBus Service](https://github.com/AsamK/signal-cli/wiki/DBus-service)
23
24 ## Usage
25
26 For a complete usage overview please read the [man page](https://github.com/AsamK/signal-cli/blob/master/man/signal-cli.1.adoc) and the [wiki](https://github.com/AsamK/signal-cli/wiki).
27
28 Important: The USERNAME is your phone number in international format and must include the country calling code. Hence it should start with a "+" sign. (See [Wikipedia](https://en.wikipedia.org/wiki/List_of_country_calling_codes) for a list of all country codes.)
29
30 * Register a number (with SMS verification)
31
32 signal-cli -u USERNAME register
33
34 You can register Signal using a land line number. In this case you can skip SMS verification process and jump directly to the voice call verification by adding the --voice switch at the end of above register command.
35
36 * Verify the number using the code received via SMS or voice, optionally add `--pin PIN_CODE` if you've added a pin code to your account
37
38 signal-cli -u USERNAME verify CODE
39
40 * Send a message
41
42 signal-cli -u USERNAME send -m "This is a message" RECIPIENT
43
44 * Pipe the message content from another process.
45
46 uname -a | signal-cli -u USERNAME send RECIPIENT
47
48 * Receive messages
49
50 signal-cli -u USERNAME receive
51
52
53 ## Storage
54
55 The password and cryptographic keys are created when registering and stored in the current users home directory:
56
57 `$XDG_DATA_HOME/signal-cli/data/` (`$HOME/.local/share/signal-cli/data/`)
58
59 For legacy users, the old config directories are used as a fallback:
60
61 $HOME/.config/signal/data/
62
63 $HOME/.config/textsecure/data/
64
65 ## Building
66
67 This project uses [Gradle](http://gradle.org) for building and maintaining
68 dependencies. If you have a recent gradle version installed, you can replace `./gradlew` with `gradle` in the following steps.
69
70 1. Checkout the source somewhere on your filesystem with
71
72 git clone https://github.com/AsamK/signal-cli.git
73
74 2. Execute Gradle:
75
76 ./gradlew build
77
78 3. Create shell wrapper in *build/install/signal-cli/bin*:
79
80 ./gradlew installDist
81
82 4. Create tar file in *build/distributions*:
83
84 ./gradlew distTar
85
86 ## Troubleshooting
87 If you use a version of the Oracle JRE and get an InvalidKeyException you need to enable unlimited strength crypto. See https://stackoverflow.com/questions/6481627/java-security-illegal-key-size-or-default-parameters for instructions.
88
89 ## License
90
91 This project uses libsignal-service-java from Open Whisper Systems:
92
93 https://github.com/WhisperSystems/libsignal-service-java
94
95 Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html