The original sh sourced .profile on startup. bash will try to source .bash_profile first, but if that doesn't exist, it will source .profile. Note that if bash is started as sh (e.g. /bin/sh is a link to /bin/bash) or is started with the --posix flag, it tries to emulate sh, and only reads .profile. Footnotes: Actually, the first one of .bash_profile, .bash_login, .profile See also: Bash ...
The one possible exception is /etc/profile and .profile, which may be used by multiple different shells (including at least sh and bash). There is something called an environment associated with every running process which can contain variables that may affect the behavior of said process.
It says that the /etc/profile file sets the environment variables at startup of the Bash shell. The /etc/profile.d directory contains other scripts that contain application-specific startup files, which are also executed at startup time by the shell.
What do the scripts in /etc/profile.d do? - Unix & Linux Stack Exchange
The .profile dates back to the original Bourne shell known as sh. Since the GNU shell bash is (depending on its options) a superset of the Bourne shell, both shells can use the same startup file. That is, provided that only sh commands are put in .profile For example, alias is a valid built-in command of bash but unknown to sh. Therefore, if you had only a .profile in your home directory and ...
What is the difference between .profile and .bash_profile and why don't ...
On the Linux systems I've seen the files .profile and .bash_profile in ~ have permissions -rw-r--r--. People seem to put various env vars into these files quite often, including smth like AWS keys, etc.
1 The GL Core Profile option in Plasma Renderer refers to a specific mode of OpenGL (GL) rendering. GL Core Profile is, a modern, streamlined version of OpenGL that removes deprecated functionality. The recommended way to use OpenGL for new applications and more efficient than the older compatibility profile.
What does it mean to force "GL Core Profile" in Plasma Renderer?