[LINUX] Hide the warning that zsh can be used by default on Mac

<!-Hide warning that zsh can be used by default on Mac->

A warning that was not displayed before occurs

After updating to macOS Catalina, when I start bash, the following message is displayed. (I'm using fish by default)

ymmmtym@localhost ~> bash

The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.



From the conclusion, it was solved by adding the following to ~ / .bashrc.



About warning messages

Try to access the site (https://support.apple.com/ja-jp/HT208050) that was displayed obediently with the warning message.

Starting with macOS Catalina, Macs will use zsh as the default login and interactive shells. Earlier versions of macOS can also make zsh the default.

It seems that if you use something other than zsh, a warning message will be displayed.


It seems that the bash binary file is a little different only for Mac.

For Ubuntu 16.04

[email protected]:~$ strings /bin/bash |grep BASH_SILENCE_DEPRECATION_WARNING
[email protected]:~$

For Mac (macOS Catalina)

ymmmtym@localhost:~$ strings /bin/bash |grep BASH_SILENCE_DEPRECATION_WARNING

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