Are bash functions exported?
It turns out that a bash function needs to be exported only if you want to use it in a non-sourced script. I tried several levels of subshells, the behavior is the same.
What does export Do bash?
export is bash shell BUILTINS commands, which means it is part of the shell. It marks an environment variables to be exported to child-processes. The export command, on the other hand, provides the ability to update the current shell session about the change you made to the exported variable.
What happens if we export a shell variable in bash?
export makes the variable available to sub-processes. means that the variable name is available to any process you run from that shell process.
What does export term Linux do?
The export TERM=linux command sets the terminal emulator to linux . Depending on the environment and capability of the console you’re using, some emulations will work better than others. The default TERM setting for Ubuntu is xterm . You can check your TERM setting by running echo $TERM .
Is it possible to export functions in Bash?
The syntax should be fine as long as we are moving between one Bash shell of the same version to a new Bash shell of the same version. YMMV if you are moving between different shells or between systems that may have different versions of Bash. You cannot export functions, not in the way that you are describing.
When to export a variable from inside a function?
The fact that the export happens in the function body is not relevant to the scope of the environment variable (in this case). It will start to exist as soon as the function is called. The variable will be available in the script’s environment and in the environment of any other process started from the script after the function call.
Can you export functions from Bash to ymmv?
YMMV if you are moving between different shells or between systems that may have different versions of Bash. You cannot export functions, not in the way that you are describing. The shell will only load the ~/.bashrc file on the start of an interactive shell (search for “Invocation” in the bash manpage ).
Can a function be set as a string in Bash?
This means that only the shell (just Bash?) will be able to accept the function. You could also set the function yourself as the Bash only considers envvars starting with () { as function: If you need to “export” this variable over SSH, then you really need the function as a string.