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platform::shell(n) [centos man page]

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

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NAME
platform::shell - System identification support code and utilities SYNOPSIS
package require platform::shell ?1.1.4? platform::shell::generic shell platform::shell::identify shell platform::shell::platform shell _________________________________________________________________ DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell. This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only requirement is that the other shell (identified by its path), is actually executable on the current machine. While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run 32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers. For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed packages, versus the architecture of the shell running the repository software. COMMANDS
platform::shell::identify shell This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell. platform::shell::generic shell This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell. platform::shell::platform shell This command returns the contents of tcl_platform(platform) for the specified Tcl shell. KEYWORDS
operating system, cpu architecture, platform, architecture platform::shell 1.1.4 platform::shell(n)

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platform(n)						       Tcl Bundled Packages						       platform(n)

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NAME
platform - System identification support code and utilities SYNOPSIS
package require platform ?1.0.4? platform::generic platform::identify platform::patterns identifier _________________________________________________________________ DESCRIPTION
The platform package provides several utility commands useful for the identification of the architecture of a machine running Tcl. Whilst Tcl provides the tcl_platform array for identifying the current architecture (in particular, the platform and machine elements) this is not always sufficient. This is because (on Unix machines) tcl_platform reflects the values returned by the uname command and these are not standardized across platforms and architectures. In addition, on at least one platform (AIX) the tcl_platform(machine) contains the CPU serial number. Consequently, individual applications need to manipulate the values in tcl_platform (along with the output of system specific utilities) - which is both inconvenient for developers, and introduces the potential for inconsistencies in identifying architectures and in naming con- ventions. The platform package prevents such fragmentation - i.e., it establishes a standard naming convention for architectures running Tcl and makes it more convenient for developers to identify the current architecture a Tcl program is running on. COMMANDS
platform::identify This command returns an identifier describing the platform the Tcl core is running on. The returned identifier has the general for- mat OS-CPU. The OS part of the identifier may contain details like kernel version, libc version, etc., and this information may con- tain dashes as well. The CPU part will not contain dashes, making the preceding dash the last dash in the result. platform::generic This command returns a simplified identifier describing the platform the Tcl core is running on. In contrast to platform::identify it leaves out details like kernel version, libc version, etc. The returned identifier has the general format OS-CPU. platform::patterns identifier This command takes an identifier as returned by platform::identify and returns a list of identifiers describing compatible architec- tures. KEYWORDS
operating system, cpu architecture, platform, architecture platform 1.0.4 platform(n)

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