bin/dot

   1 #!/bin/bash
   2 ENVS="$HOME/envs"
   3 ANSIBLE="$ENVS/ansible/bin/ansible-playbook"
   4 read -d '' HELP << EOF
   5 dot - a (mostly) one script dotfiles manager
   6
   7 1. Install this file on your path
   8 2. Clone your (or my) 'dotfiles' repository to ~/dotfiles
   9 3. Run 'dot help' to get started.
  10
  11 Copyright 2026 Edward Delaporte V
  12 Licensed under AGPLv3 and later.
  13
  14 dot setup
  15         install ansible CLI to $ANSIBLE
  16
  17 dot link FILE
  18   updates ~/dot.HOSTNAME.yaml
  19   to include a symlink from ~/dotfiles/files/FILE to ~/.FILE
  20
  21 dot install SCRIPT
  22   updates ~/dot.HOSTNAME.yaml
  23   to run ~/dotfiles/SCRIPT.sh if it has not yet been run
  24   creates ~/dot/SCRIPT.installed after SCRIPT has been run
  25
  26 dot check
  27         check setup against ~/dot.HOSTNAME.yaml
  28
  29 dot apply
  30         apply config in ~/dot.HOSTNAME.yaml
  31 EOF
  32
  33 if [ ! -n "$1" ] || [ "$1" == "help" ]; then
  34         echo "$HELP"
  35 fi
  36 # set -v
  37
  38 TASKFILE="$HOME/dot.$HOSTNAME.yaml"
  39 LINKFILES="$HOME/dotfiles/files"
  40 INSTALLS="$HOME/dotfiles/install"
  41 DOT="$HOME/dot"
  42
  43 read -d '' EMPTY_TASKFILE << EOF
  44 ---
  45 - name: Set up dotfiles on $HOSTNAME
  46   gather_facts: no
  47   hosts: localhost
  48   connection: local
  49
  50   tasks:
  51     - name: Check on $TASKFILE
  52       ansible.builtin.stat:
  53         path: $TASKFILE
  54 EOF
  55
  56
  57 if [ "$1" == "setup" ]; then
  58   if [[ ! -f "$ANSIBLE" ]]; then
  59                 mkdir -p "$ENVS"
  60                 echo "Setting up Ansible in ~/envs/ansible"
  61                 cd $HOME/envs; python3 -m venv ansible
  62                 $HOME/envs/ansible/bin/pip install ansible jinja2
  63         fi
  64   if [[ -f "$ANSIBLE" ]]; then
  65                 echo "[ ok ]: Ansible setup at $ANSIBLE"
  66         fi
  67   if [[ ! -f "$TASKFILE" ]]; then
  68                 echo "Creating $TASKFILE"
  69                 echo "$EMPTY_TASKFILE" >> $TASKFILE
  70         fi
  71   if [[ -f "$TASKFILE" ]]; then
  72                 echo "[ ok ]: dot config at $TASKFILE"
  73         fi
  74 fi
  75
  76 if [ "$1" == "reset" ]; then
  77         read -n1 -p "Reset $TASKFILE? [y,N]" input
  78         if [[ ! $input == "Y" && ! $input == "y" ]]; then
  79                 echo "Aborted by user"
  80                 exit 1
  81         fi
  82         echo "$EMPTY_TASKFILE" > $TASKFILE
  83         echo ""
  84 fi
  85
  86
  87 if [ "$1" == "check" ]; then
  88         $ANSIBLE $TASKFILE --check --diff
  89 fi
  90
  91 if [ "$1" == "link" ]; then
  92         if [ ! -n "$2" ]; then
  93                 echo "Can symlink: (from $LINKFILES)"
  94                 cd $LINKFILES
  95                 ls -p | grep -v /
  96                 exit 1
  97         fi
  98
  99 read -d '' LINK_THIS_FILE << EOF
 100
 101     - name: symlink $2
 102       ansible.builtin.file:
 103         src: "$LINKFILES/$2"
 104         dest: "$HOME/.$2"
 105         state: "link"
 106 EOF
 107
 108         echo "    $LINK_THIS_FILE" >> $TASKFILE
 109         echo "$2 added to symlinks in $TASKFILE"
 110         echo "Run 'dot apply' to create all configured symlinks"
 111 fi
 112
 113
 114 if [ "$1" == "apply" ]; then
 115   if [[ ! -f "$TASKFILE" ]]; then
 116                 echo "$TASKFILE is missing. Run 'dot setup'"
 117                 exit 1
 118         fi
 119         $ANSIBLE $TASKFILE
 120 fi
 121
 122 if [ "$1" == "install" ]; then
 123         if [ ! -n "$2" ]; then
 124                 echo "Can install: (.sh scripts in $INSTALLS)"
 125                 cd $INSTALLS
 126                 ls -p | grep -v / | grep .sh
 127                 exit 1
 128         fi
 129   if [[ ! -f "$INSTALLS/$2.sh" ]]; then
 130                 echo "No such install script $INSTALLS/$2.sh"
 131                 echo "Run dot install with no params to list scripts."
 132                 exit 1
 133         fi
 134
 135 mkdir -p $DOT
 136 read -d '' RUN_INSTALL << EOF
 137     - name: check $2
 138       stat:
 139         path: "$DOT/$2.installed"
 140       register: $2_installed
 141     - name: install $2
 142       ansible.builtin.shell: |
 143         "$INSTALLS/$2.sh"
 144         touch "$DOT/$2.installed"
 145       when: not $2_installed.stat.exists
 146     - name: verify $2 is installed
 147       ansible.builtin.debug:
 148         msg: "$2 is installed."
 149       when: $2_installed.stat.exists
 150 EOF
 151         echo "    $RUN_INSTALL" >> $TASKFILE
 152         echo "Run 'dot apply' to run the install"
 153 fi