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pgpainless/docs/source/pgpainless-cli/usage.md

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# User Guide PGPainless-CLI
The module `pgpainless-cli` contains a command line application which conforms to the
[Stateless OpenPGP Command Line Interface](https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/).
You can use it to generate keys, encrypt, sign and decrypt messages, as well as verify signatures.
## Implementation
Essentially, `pgpainless-cli` is just a very small composing module, which injects `pgpainless-sop` as a
concrete implementation of `sop-java` into `sop-java-picocli`.
## Install
The `pgpainless-cli` command line application is available in Debian unstable / Ubuntu 22.10 and can be installed via APT:
```shell
$ sudo apt install pgpainless-cli
```
This method comes with man-pages:
```shell
$ man pgpainless-cli
```
## Build
To build a standalone *fat*-jar:
```shell
$ cd pgpainless-cli/
$ gradle shadowJar
```
The fat-jar can afterwards be found in `build/libs/`.
To build a [distributable](https://docs.gradle.org/current/userguide/distribution_plugin.html):
```shell
$ cd pgpainless-cli/
$ gradle installDist
```
Afterwards, an uncompressed distributable is installed in `build/install/`.
To execute the application, you can call `build/install/bin/pgpainless-cli{.bat}`
## Usage
Hereafter, the program will be referred to as `pgpainless-cli`.
```
$ pgpainless-cli help
Stateless OpenPGP Protocol
Usage: pgpainless-cli [COMMAND]
Commands:
help Display usage information for the specified subcommand
armor Add ASCII Armor to standard input
dearmor Remove ASCII Armor from standard input
decrypt Decrypt a message from standard input
inline-detach Split signatures from a clearsigned message
encrypt Encrypt a message from standard input
extract-cert Extract a public key certificate from a secret key from
standard input
generate-key Generate a secret key
sign Create a detached signature on the data from standard input
verify Verify a detached signature over the data from standard input
inline-sign Create an inline-signed message from data on standard input
inline-verify Verify inline-signed data from standard input
version Display version information about the tool
Exit Codes:
0 Successful program execution.
1 Generic program error
3 Verification requested but no verifiable signature found
13 Unsupported asymmetric algorithm
17 Certificate is not encryption capable
19 Usage error: Missing argument
23 Incomplete verification instructions
29 Unable to decrypt
31 Password is not human-readable
37 Unsupported Option
41 Invalid data or data of wrong type encountered
53 Non-text input received where text was expected
59 Output file already exists
61 Input file does not exist
67 Cannot unlock password protected secret key
69 Unsupported subcommand
71 Unsupported special prefix (e.g. "@env/@fd") of indirect parameter
73 Ambiguous input (a filename matching the designator already exists)
79 Key is not signing capable
Powered by picocli
```