'\" t
.TH "PORT\-SELFUPDATE" "1" "2\&.10\&.99" "MacPorts 2\&.10\&.99" "MacPorts Manual"
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.SH "NAME"
port-selfupdate \- Upgrade MacPorts itself and update the port definition files\&.
.SH "SYNOPSIS"
.sp
.nf
\fBport\fR [\fB\-qvdf\fR] \fBselfupdate\fR [\-\-no\-sync] [\-\-migrate] [\-\-rsync]
.fi
.SH "DESCRIPTION"
.sp
\fBport selfupdate\fR checks for new releases of MacPorts and upgrades it when necessary\&. \fBselfupdate\fR also updates the local port definitions (the so\-called ports tree) to the latest state so you have the latest versions of ports available\&. This part of the operation corresponds to \fBport-sync\fR(1)\&.
.sp
You should regularly run \fBselfupdate\fR to update your local port definitions\&. Running \fBselfupdate\fR is required to get updated software with bug fixes and new features\&.
.SH "OPTIONS"
.PP
\fB\-\-no\-sync\fR
.RS 4
Only check for updates \- and install if available \- for MacPorts itself\&. Do not update the ports tree\&.
.RE
.PP
\fB\-\-migrate\fR
.RS 4
Rebuild even if no new version is available, upgrade if a new version is available\&. Contrary to
\fB\-f\fR, this flag will prevent downgrades\&. This flag is useful when upgrading to a newer macOS major version\&.
.RE
.PP
\fB\-\-rsync\fR
.RS 4
Use the older rsync method for downloading the new version of MacPorts\&. The default is to try HTTP(S) first, and use rsync only if that fails\&.
.RE
.SH "GLOBAL OPTIONS"
.sp
Please see the section \fBGLOBAL OPTIONS\fR in the \fBport\fR(1) man page for a description of global port options\&.
.PP
\fB\-q\fR
.RS 4
Suppress status output, be as silent as possible\&.
.RE
.PP
\fB\-f\fR
.RS 4
Do not check whether the downloaded MacPorts version is newer than the currently installed one, but always rebuild and reinstall MacPorts\&.

You can use this to downgrade from a beta or development version to the latest release\&. Note that there is no guarantee that no incompatible and irreversible changes have been made to MacPorts\*(Aq internal data structures, which can make downgrading impossible\&.
.RE
.SH "EXAMPLES"
.sp
When no new versions are available, \fBselfupdate\fR looks like this:
.sp
.if n \{\
.RS 4
.\}
.nf
$ sudo port selfupdate
\-\-\->  Checking for newer releases of MacPorts
MacPorts base version 2\&.10\&.99 installed,
MacPorts base version 2\&.10\&.99 available\&.
\-\-\-> MacPorts base is already the latest version
\-\-\-> Updating the ports tree
.fi
.if n \{\
.RE
.\}
.sp
If \fBselfupdate\fR detects that a newer version of MacPorts is available, it attempts to update your copy to this version\&. In that case, the output will be different:
.sp
.if n \{\
.RS 4
.\}
.nf
$ sudo port selfupdate
\-\-\->  Checking for newer releases of MacPorts
MacPorts base version 2\&.6\&.0 installed,
MacPorts base version 2\&.10\&.99 available\&.
\-\-\-> MacPorts base is outdated, installing new version 2\&.10\&.99
\-\-\-> Updating the ports tree
\-\-\->  Attempting to fetch MacPorts 2\&.10\&.99 source code from https://github\&.com/macports/macports\-base/releases/download/v2\&.10\&.99/MacPorts\-2\&.10\&.99\&.tar\&.bz2
\-\-\->  Extracting MacPorts 2\&.10\&.99
\-\-\->  Installing new MacPorts release in /opt/local as root:admin; permissions 0755
.fi
.if n \{\
.RE
.\}
.SH "TROUBLESHOOTING"
.sp
If \fBselfupdate\fR fails, it usually does so in one of two places: The network connection, or the installation of the update\&.
.PP
Network Problems
.RS 4
MacPorts uses the
\fIrsync\fR
protocol to update its ports tree to the latest version\&. This will fail if you are on a network that blocks TCP connections to the rsync port 873\&. Talk to your network administrators and ask them to allow connections to port 873 if this happens to you\&. Alternatively, you can just download a new installer \&.pkg from macports\&.org and run that to upgrade your installation\&.
.sp
Network connection problems might also affect you if you are in a country with US export restrictions\&. We suggest using one of our other
\m[blue]\fBmirrors\fR\m[]\&\s-2\u[1]\d\s+2
outside of the US in these cases\&.
.RE
.PP
Compilation Problems
.RS 4
When a problem occurs while building and installing the new MacPorts version, you will see the message
.sp
.if n \{\
.RS 4
.\}
.nf
Error installing new MacPorts base: command execution failed
.fi
.if n \{\
.RE
.\}
.sp
To find out what went wrong, re\-run
\fBselfupdate\fR
with the
\fB\-d\fR
flag\&. This will allow you to see all output generated by the build system\&. Look for the first occurrence of \(lqerror\(rq\&. If you cannot figure out what\(cqs wrong on your own, feel free to ask on
\m[blue]\fBthe macports\-users mailing list\fR\m[]\&\s-2\u[2]\d\s+2
and attach the output generated by
.sp
.if n \{\
.RS 4
.\}
.nf
$ sudo port \-d selfupdate
.fi
.if n \{\
.RE
.\}
.RE
.SH "SEE ALSO"
.sp
\fBport\fR(1), \fBport-sync\fR(1)
.SH "AUTHORS"
.sp
.if n \{\
.RS 4
.\}
.nf
(C) 2014\-2020 The MacPorts Project
Clemens Lang <cal@macports\&.org>
.fi
.if n \{\
.RE
.\}
.SH "EXTERNAL REFERENCES"
.IP " 1." 4
mirrors
.RS 4
\%https://trac.macports.org/wiki/Mirrors#MacPortsSource
.RE
.IP " 2." 4
the macports-users mailing list
.RS 4
\%mailto:macports-users@lists.macports.org
.RE