How to change the `sh` command to run scripts in bash 4

bashscriptterminal

I have installed bash 4 with Homebrew and bash --version shows me the version 4.

If I have following test script:

#!/usr/local/bin/bash
# test-version.sh
echo $BASH_VERSION

And I make it executable chmod +x configurer.sh and run it ./test-version.sh I also get the version 4.

But if I run it with the sh command sh test-version.sh I get the version 3.

I have put the new shell into /etc/shells:

sudo bash -c 'echo /usr/local/bin/bash >> /etc/shells'

And changed to the new shell:

 chsh -s /usr/local/bin/bash

I also changed the path in iTerm Settings > Profiles > Command to /usr/local/bin/bash.

Thanks!

EDIT: I've come to realize that it's good to leave sh alone. When wanting to run scripts with Bash 4 just don't use sh.

Best Answer

I used homebrew to install BASH4 and I use the shebang #!/bin/bash every time. This works for me with both sh and ./ styles of running.

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Your question is unclear as it seems to ask several things. However the issue re launching from the Dock can be answered.

The Dock does not call a shell. .profile and other startup scripts are only run when Terminal.app or similar starts a shell or you run a shell script via launchd etc.

To change the path used for Apps launched from the Dock, Finder or other GUI then you need to change the path your Workspace uses this is in ~/.MacOSX/environment.plist e.g. mine is

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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Also have a look at this question.

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sh --version is probably the same as /bin/sh --version. If the current shell is bash, you can see its version with echo $BASH_VERSION. If you change the default login shell with chsh, you can keep Terminal's default shell as the login shell.

sudo port install bash
Add /opt/local/bin/bash to /etc/shells
chsh -s /opt/local/bin/bash
Open a new tab and check echo $BASH_VERSION

Best Answer

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