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port: add 'prefix' action to display the configured prefix
Adds a new `port prefix` command that prints MacPorts' installation prefix on stdout, unadorned, so it can be used directly in shell scripts. Closes: https://trac.macports.org/ticket/72961
This commit is contained in:
Herby Gillot
@@ -64,6 +64,7 @@ MAN1= \
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port-patch.1 \
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port-pkg.1 \
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port-platform.1 \
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port-prefix.1 \
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port-provides.1 \
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port-quit.1 \
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port-rdependents.1 \
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@@ -0,0 +1,48 @@
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'\" t
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.TH "PORT\-PREFIX" "1" "2\&.12\&.99" "MacPorts 2\&.12\&.99" "MacPorts Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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port-prefix \- Print the prefix for which MacPorts was configured
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.SH "SYNOPSIS"
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.sp
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.nf
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\fBport\fR \fBprefix\fR
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.fi
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.SH "DESCRIPTION"
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.sp
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This command prints the installation prefix of your MacPorts installation, i\&.e\&., the directory under which MacPorts and all ports are installed\&. The prefix is set at configure time and defaults to \fI/opt/local\fR\&.
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.SH "GLOBAL OPTIONS"
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.sp
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Please see the section \fBGLOBAL OPTIONS\fR in the \fBport\fR(1) man page for a description of global port options\&.
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.SH "SEE ALSO"
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.sp
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\fBport\fR(1)
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.SH "AUTHORS"
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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(C) 2026 The MacPorts Project
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.fi
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.if n \{\
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.RE
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.\}
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@@ -0,0 +1,28 @@
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// vim: set et sw=4 ts=8 ft=asciidoc tw=80:
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port-prefix(1)
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==============
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NAME
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----
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port-prefix - Print the prefix for which MacPorts was configured
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SYNOPSIS
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--------
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[cmdsynopsis]
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*port* *prefix*
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DESCRIPTION
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-----------
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This command prints the installation prefix of your MacPorts installation, i.e.,
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the directory under which MacPorts and all ports are installed. The prefix is
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set at configure time and defaults to '/opt/local'.
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include::global-flags.txt[]
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SEE ALSO
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--------
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man:port[1]
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AUTHORS
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-------
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(C) 2026 The MacPorts Project
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@@ -1077,6 +1077,11 @@ version
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Display the release number of the installed MacPorts infrastructure\&.
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.RE
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.PP
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prefix
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.RS 4
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Display the prefix for which MacPorts was configured\&.
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.RE
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.PP
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selfupdate
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.RS 4
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Updates the MacPorts system, ports tree(s) and base tools if needed, from the MacPorts rsync server, installing the newest infrastructure available\&.
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@@ -539,6 +539,9 @@ mirror::
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version::
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Display the release number of the installed MacPorts infrastructure.
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prefix::
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Display the prefix for which MacPorts was configured.
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selfupdate::
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Updates the MacPorts system, ports tree(s) and base tools if needed, from
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the MacPorts rsync server, installing the newest infrastructure available.
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@@ -2680,6 +2680,13 @@ proc action_platform { action portlist opts } {
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}
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proc action_prefix { action portlist opts } {
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global macports::prefix
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puts ${prefix}
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return 0
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}
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proc action_dependents { action portlist opts } {
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if {[require_portlist portlist]} {
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return 1
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@@ -4152,6 +4159,7 @@ set action_array [dict create \
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\
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version [list action_version [ACTION_ARGS_NONE]] \
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platform [list action_platform [ACTION_ARGS_NONE]] \
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prefix [list action_prefix [ACTION_ARGS_NONE]] \
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\
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uninstall [list action_uninstall [ACTION_ARGS_PORTS]] \
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\
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@@ -35,6 +35,10 @@ set portpath .
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set portbuildpath ./build
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set macports::portdbpath .
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set test_tclsh [file normalize [file join $macports::autoconf::top_srcdir tests test-tclsh]]
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set port_script [file normalize [file join $pwd .. .. port port.tcl]]
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testConstraint portClientAvailable [expr {[file executable $test_tclsh] && [file readable $port_script]}]
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test get_default_subport {
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Get default subport unit test.
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@@ -59,5 +63,13 @@ test get_subbuildpath {
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return "Get subbuild path successful."
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} -result "Get subbuild path successful."
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test action_prefix {
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`port prefix` prints the configured prefix and nothing else.
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} -constraints {
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portClientAvailable
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} -body {
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exec -ignorestderr $test_tclsh $port_script prefix
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} -result $pwd/tmpdir
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cleanupTests
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