Bashisms

Some random details on setting up modern bash on macOS.

Setting up Bash on macOS

1. Install a modern version of bash with brew

$ brew install bash

2. Add bash binary to /etc/shells

$ echo "$(brew --prefix)/bin/bash" | sudo tee -a /etc/shells

3. Change shell

$ chsh -s "$(brew --prefix)/bin/bash"

4. Update hostname

sudo scutil --set HostName "macbook"

Aliases, Functions, Etc.

Some aliases I use regularly

1. write - switch to blog directory, build html, and launch simple python web server

alias write='cd ./wcameronbowen.com && soupault && python3 -m http.server --directory build'

2. awsl - login to awscli with iam identity center

awsl () {
    aws sso login --profile $1
    export AWS_PROFILE=$1
}

3. vim - I got used to using vim and then switched to neovim

alias vim='nvim'

4. random hex - handy random hex strings

alias hexr='hexdump -vn4 -e'\''4/4 "%08X" 1 "\n"'\'' /dev/urandom'

5. short dig - dig, but shorter

alias digs='dig +short'

6. go back - go back to the previous directory

alias b='cd -'

7. pyvenv - switch to python virtual environment or create one

pyvenv () {
    if [ -d ./venv ]; then  
        source venv/bin/activate
    elif [ -d ./env ]; then
        source env/bin/activate
    else
        python3 -m venv venv && source venv/bin/activate
    fi
}

8. de - shorter than typing deactivate when in python virtual environment

alias de='deactivate'

9. myip - get my public ip

alias myip='curl -4s ipconfig.io'

10. bash prompt - time | hostname | working wirectory | git branch | new line

export PS1='$(exitcode)\e[1m\A \e[0m\h\e[0m [\w]$(__git_ps1 " %s")\e[0m\n\$ '

Hope these help you too!