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Full Discussion: Configure $PATH in /.bash_profile or /etc/paths?
Top Forums UNIX for Dummies Questions & Answers Configure $PATH in /.bash_profile or /etc/paths? Post 302601438 by Corona688 on Thursday 23rd of February 2012 04:36:29 PM
Old 02-23-2012
It's not one giant thing. Anything can and does set it, and passes on copies of these changes to whatever it creates in turn. To get a complete understanding of how this PATH is set you'd need to know everything that changed it from the point your system runs init until the point your window manager creates your shell -- anything along the way between those two can affect PATH.

Only after all that happens, does your shell exist to start changing it too...

1) Your window manager creates a shell prompt. What PATH does your window manager have? Who knows. Whatever it had for whatever reason, your shell gets a copy.
2) shell reads /etc/profile. This is a script -- they can do anything they want in there, like read other files, set a special path for root only, or anything else you can imagine.
3) shell reads ~/.bashrc. This is also a script.
Last edited by Corona688; 02-23-2012 at 05:44 PM..
 

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LEARN ABOUT CENTOS

platform::shell

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

__________________________________________________________________________________________________________________________________________________

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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