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Full Discussion: What does ${x} mean?
Top Forums Shell Programming and Scripting What does ${x} mean? Post 303031667 by RudiC on Monday 4th of March 2019 04:00:46 AM
Old 03-04-2019
man sh:


Quote:
The simplest form for parameter expansion is:

${parameter}

The value, if any, of parameter is substituted.

The parameter name or symbol can be enclosed in braces, which are optional except for positional parameters with more than one digit or when parameter is followed by a
character that could be interpreted as part of the name.
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pkg::create(n)						       Tcl Built-In Commands						    pkg::create(n)

__________________________________________________________________________________________________________________________________________________

NAME
pkg::create - Construct an appropriate package ifneeded command for a given package specification SYNOPSIS
::pkg::create -name packageName -version packageVersion ?-load filespec? ... ?-source filespec? ... _________________________________________________________________ DESCRIPTION
::pkg::create is a utility procedure that is part of the standard Tcl library. It is used to create an appropriate package ifneeded com- mand for a given package specification. It can be used to construct a pkgIndex.tcl file for use with the package mechanism. OPTIONS
The parameters supported are: -name packageName This parameter specifies the name of the package. It is required. -version packageVersion This parameter specifies the version of the package. It is required. -load filespec This parameter specifies a binary library that must be loaded with the load command. filespec is a list with two elements. The first element is the name of the file to load. The second, optional element is a list of commands supplied by loading that file. If the list of procedures is empty or omitted, ::pkg::create will set up the library for direct loading (see pkg_mkIndex). Any num- ber of -load parameters may be specified. -source filespec This parameter is similar to the -load parameter, except that it specifies a Tcl library that must be loaded with the source com- mand. Any number of -source parameters may be specified. At least one -load or -source parameter must be given. SEE ALSO
package(n) KEYWORDS
auto-load, index, package, version Tcl 8.3 pkg::create(n)
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