README.md

Simpler bash recipes

Goal

Build install scripts that are stand-alone bash

Secondary goal

Support "dry runs", where the guard statements can be executed without actually running the installation statements

Notes

With this code, a $DRY_RUN environment variable needs to be set to enable dry run functionality. If it is set, the installation statements won't execute and a message will be displayed instead.

deployer.sh

# Install deploy user
#
# Environment variables required:
#
# DEPLOYER                  # should be same as $APP_NAME
# DRY_RUN                   # if set, don't execute install

function check_deployer() {
  test -f /home/$1/.ssh/authorized_keys
}

function create_deployer() {
  useradd --create-home --shell /bin/bash --user-group --groups admin $1
  mkdir -p /home/$1/.ssh
  cp files/id_rsa.pub /home/$1/.ssh/authorized_keys
  chmod 700 /home/$1/.ssh
  chmod 600 /home/$1/.ssh/authorized_keys
  chown -R $1:$1 /home/$1/.ssh
}

if ! check_deployer "$DEPLOYER"; then
  echo "Creating user '$DEPLOYER'"
  [[ $DRY_RUN ]] || create_deployer "$DEPLOYER"
fi

old_deployer.sh

# Install deploy user
#
# $1 - deploy_user
# $2 - ssh_key_file

useradd --create-home --shell /bin/bash --user-group --groups admin $1

if test -f /home/$1/.ssh/authorized_keys ; then
  echo 'authorized_keys already created'
else
  mkdir -p /home/$1/.ssh
  cp files/$2 /home/$1/.ssh/authorized_keys
  chmod 700 /home/$1/.ssh
  chmod 600 /home/$1/.ssh/authorized_keys
  chown -R $1:$1 /home/$1/.ssh
 fi