无法通过MacPorts更新Mac中的Bash

Question

I updated unsuccessfully my Bash to 3.2.48 by MacPorts.

It seems that I do not have it active, since I get

echo $BASH_VERSION
3.2.17(1)-release

How can you make the newest Bash active such that I get it for my login shell?

Answer 1

Run the following code, for instance to change your shell to the newest Bash installed by MacPorts

chsh -s /opt/local/bin/bash

If that gives you the message,

" non-standard shell "

you will need to add

/opt/local/bin/bash

to

/etc/shells

Note that /etc/shells is just a text file, so you can edit it directly if you authenticate as root. You can programmatically change it by the command

sudo -s
Password:
# echo /opt/local/bin/bash >> /etc/shells

If your first chsh command failed, run it now again if you managed to change the above file.

Answer 2

You can switch your login shell, from your existing Mac OS X login shell (by default its /bin/bash shipped with Mac OS X), to MacPorts /opt/local/bin/bash just by using the following shell script:

#!/opt/local/bin/bash
if [ `grep /opt/local/bin/bash /etc/shells` ]; 
then 
    echo /opt/local/bin/bash | chsh -s /opt/local/bin/bash;     
else 
    echo /opt/local/bin/bash | sudo tee -a /etc/shells; 
    chsh -s /opt/local/bin/bash; 
fi

Answer 3

I'm guessing it's installed but not being used as your login shell.

You can change the shell using dscl on the command line.

At the dscl prompt type the following:

list Local/Default/Users
read Local/Default/Users/<your username here>
change Local/Default/Users/<your username here> UserShell /bin/bash /opt/local/bin/bash

I have another example of dscl use on my blog if it helps.