(features.info)Bash Startup Files
Bash Startup Files
When and how Bash executes startup files.
For Login shells (subject to the -noprofile option):
On logging in:
If `/etc/profile' exists, then source it.
If `~/.bash_profile' exists, then source it,
else if `~/.bash_login' exists, then source it,
else if `~/.profile' exists, then source it.
On logging out:
If `~/.bash_logout' exists, source it.
For non-login interactive shells (subject to the -norc and -rcfile options):
On starting up:
If `~/.bashrc' exists, then source it.
For non-interactive shells:
On starting up:
If the environment variable `ENV' is non-null, expand the
variable and source the file named by the value. If Bash is
not started in Posix mode, it looks for `BASH_ENV' before
So, typically, your `~/.bash_profile' contains the line
`if [ -f `~/.bashrc' ]; then source `~/.bashrc'; fi'
after (or before) any login specific initializations.
If Bash is invoked as `sh', it tries to mimic the behavior of `sh'
as closely as possible. For a login shell, it attempts to source only
`/etc/profile' and `~/.profile', in that order. The `-noprofile'
option may still be used to disable this behavior. A shell invoked as
`sh' does not attempt to source any other startup files.
When Bash is started in POSIX mode, as with the `-posix' command
line option, it follows the Posix 1003.2 standard for startup files.
In this mode, the `ENV' variable is expanded and that file sourced; no
other startup files are read.
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