'\" t
.TH "CARGO\-LOGIN" "1"
.nh
.ad l
.ss \n[.ss] 0
.SH "NAME"
cargo\-login \[em] Log in to a registry
.SH "SYNOPSIS"
\fBcargo login\fR [\fIoptions\fR] [\fItoken\fR] [\fB\-\-\fR \fIargs\fR]
.SH "DESCRIPTION"
This command will run a credential provider to save a token so that commands
that require authentication, such as \fBcargo\-publish\fR(1), will be
automatically authenticated.
.sp
All the arguments following the two dashes (\fB\-\-\fR) are passed to the credential provider.
.sp
For the default \fBcargo:token\fR credential provider, the token is saved
in \fB$CARGO_HOME/credentials.toml\fR\&. \fBCARGO_HOME\fR defaults to \fB\&.cargo\fR
in your home directory.
.sp
If a registry has a credential\-provider specified, it will be used. Otherwise,
the providers from the config value \fBregistry.global\-credential\-providers\fR will
be attempted, starting from the end of the list.
.sp
If the \fItoken\fR argument is not specified, it will be read from stdin.
.sp
The API token for crates.io may be retrieved from <https://crates.io/me>\&.
.sp
Take care to keep the token secret, it should not be shared with anyone else.
.SH "OPTIONS"
.SS "Login Options"
.sp
\fB\-\-registry\fR \fIregistry\fR
.RS 4
Name of the registry to use. Registry names are defined in \fICargo config
files\fR <https://doc.rust\-lang.org/cargo/reference/config.html>\&. If not specified, the default registry is used,
which is defined by the \fBregistry.default\fR config key which defaults to
\fBcrates\-io\fR\&.
.RE
.SS "Display Options"
.sp
\fB\-v\fR, 
\fB\-\-verbose\fR
.RS 4
Use verbose output. May be specified twice for \[lq]very verbose\[rq] output which
includes extra output such as dependency warnings and build script output.
May also be specified with the \fBterm.verbose\fR
\fIconfig value\fR <https://doc.rust\-lang.org/cargo/reference/config.html>\&.
.RE
.sp
\fB\-q\fR, 
\fB\-\-quiet\fR
.RS 4
Do not print cargo log messages.
May also be specified with the \fBterm.quiet\fR
\fIconfig value\fR <https://doc.rust\-lang.org/cargo/reference/config.html>\&.
.RE
.sp
\fB\-\-color\fR \fIwhen\fR
.RS 4
Control when colored output is used. Valid values:
.sp
.RS 4
\h'-04'\(bu\h'+02'\fBauto\fR (default): Automatically detect if color support is available on the
terminal.
.RE
.sp
.RS 4
\h'-04'\(bu\h'+02'\fBalways\fR: Always display colors.
.RE
.sp
.RS 4
\h'-04'\(bu\h'+02'\fBnever\fR: Never display colors.
.RE
.sp
May also be specified with the \fBterm.color\fR
\fIconfig value\fR <https://doc.rust\-lang.org/cargo/reference/config.html>\&.
.RE
.SS "Common Options"
.sp
\fB+\fR\fItoolchain\fR
.RS 4
If Cargo has been installed with rustup, and the first argument to \fBcargo\fR
begins with \fB+\fR, it will be interpreted as a rustup toolchain name (such
as \fB+stable\fR or \fB+nightly\fR).
See the \fIrustup documentation\fR <https://rust\-lang.github.io/rustup/overrides.html>
for more information about how toolchain overrides work.
.RE
.sp
\fB\-\-config\fR \fIKEY=VALUE\fR or \fIPATH\fR
.RS 4
Overrides a Cargo configuration value. The argument should be in TOML syntax of \fBKEY=VALUE\fR,
or provided as a path to an extra configuration file. This flag may be specified multiple times.
See the \fIcommand\-line overrides section\fR <https://doc.rust\-lang.org/cargo/reference/config.html#command\-line\-overrides> for more information.
.RE
.sp
\fB\-C\fR \fIPATH\fR
.RS 4
Changes the current working directory before executing any specified operations. This affects
things like where cargo looks by default for the project manifest (\fBCargo.toml\fR), as well as
the directories searched for discovering \fB\&.cargo/config.toml\fR, for example. This option must
appear before the command name, for example \fBcargo \-C path/to/my\-project build\fR\&.
.sp
This option is only available on the \fInightly
channel\fR <https://doc.rust\-lang.org/book/appendix\-07\-nightly\-rust.html> and
requires the \fB\-Z unstable\-options\fR flag to enable (see
\fI#10098\fR <https://github.com/rust\-lang/cargo/issues/10098>).
.RE
.sp
\fB\-h\fR, 
\fB\-\-help\fR
.RS 4
Prints help information.
.RE
.sp
\fB\-Z\fR \fIflag\fR
.RS 4
Unstable (nightly\-only) flags to Cargo. Run \fBcargo \-Z help\fR for details.
.RE
.SH "ENVIRONMENT"
See \fIthe reference\fR <https://doc.rust\-lang.org/cargo/reference/environment\-variables.html> for
details on environment variables that Cargo reads.
.SH "EXIT STATUS"
.sp
.RS 4
\h'-04'\(bu\h'+02'\fB0\fR: Cargo succeeded.
.RE
.sp
.RS 4
\h'-04'\(bu\h'+02'\fB101\fR: Cargo failed to complete.
.RE
.SH "EXAMPLES"
.sp
.RS 4
\h'-04' 1.\h'+01'Save the token for the default registry:
.sp
.RS 4
.nf
cargo login
.fi
.RE
.RE
.sp
.RS 4
\h'-04' 2.\h'+01'Save the token for a specific registry:
.sp
.RS 4
.nf
cargo login \-\-registry my\-registry
.fi
.RE
.RE
.SH "SEE ALSO"
\fBcargo\fR(1), \fBcargo\-logout\fR(1), \fBcargo\-publish\fR(1)