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setps1

An easy, native way to set the bash PS1 on the fly

Setup

To install, simply add the 'setps1' file to any folder on your PATH (~/bin/ is recommended).
WARNING: If you stop here, you will have to run either source setps1 or . setps1 (both are identical) every time. See item #1 in the Advanced section.

Commands

setps1 --help or setps1 -h (or mis-typing any other parameter) will display the help.
setps1 d or setps1 default will set the PS1 back to whatever it was before setps1 was run the first time in the current session.
setps1 b or setps1 basic will set the PS1 to a basic prompt which displays just the name of the parent folder.
setps1 v or setps1 verbose will set the PS1 to a verbose output which displays the full filepath.
setps1 vm or setps1 verbose-multiline will set the PS1 to a verbose output which displays the full filepath, and places the prompt on the next line. Useful for very long working directories.
setps1 f or setps1 fancy will enable a fancy prompt which utilizes powerline. If powerline is not installed, this defaults to the verbose prompt. NOTE: if using powerline on linux, or if it's just not working, read item #4 in the Advanced section.

Advanced Setup

These are some more advanced options you can choose to (or not to) add

  1. (RECOMMENDED) Stop typing source:
    Simply add alias setps1=". setps1" to your .bash_profile file

  2. Auto-run on startup:
    Add the following to your .bash_profile file:

    if [ -f ~/bin/setps1 ]; then
   . ~/bin/setps1 verbose -tlf-set-ps1-shell-start-flag
else
  # This part is optional, either set it to be whatever default prompt you want, or just remove it entirely
  export PS1="\w => "
fi

  3. Autocompletion:

    1. Make sure you have bash autocompletion installed/enabled (on macOS you might have to run brew install bash-completion)
    2. Add the completions/setps1 file to the bash completions folder. (With brew bash-completion, it's located at $(brew --prefix)/etc/bash_completion.d/)

  4. Set powerline install location:
    If your powerline install is somewhere other than ~/Library/Python/2.7/lib/python/site-packages/powerline/bindings/bash/powerline.sh, you will need to set the POWERLINE_SHELL variable before calling setps1. This can be done by adding the line export POWERLINE_SHELL="[path to powerline.sh]" in your .bash_profile. You only need to place it before trying to call setps1 fancy.