in_vagrant: transparently execute command inside vagrant

in_vagrant

#!/bin/bash
#
# Syntax:
#
#   ./in_vagrant [command] [args]
#
# Example usage:
#
# Set up a Vagrantfile with a config called "foo"
#
#     vconfig.vm.define :foo do |config|
#
# cd /your/project/directory
# npm install                 # use npm installed on the host
# ./in_vagrant npm install    # use npm installed in the guest vm
#
# Modify VAGRANT_NAME and VAGRANT_ROOT below to fit your project structure

VAGRANT_NAME=foo
VAGRANT_ROOT=/vagrant

unset a
for arg; do
  printf -v temp %q "$arg"
  a+=("$temp")
done

ssh_config_cache=".vagrant-ssh.cache"

if [[ -f "$ssh_config_cache" ]] && test `find $ssh_config_cache -mmin +120`; then
  rm -f "$ssh_config_cache"
fi

if [[ -f "$ssh_config_cache" ]] && ! grep -q 'User vagrant' $ssh_config_cache; then 
  rm -f "$ssh_config_cache"
fi

if [[ ! -f "$ssh_config_cache" ]]; then
  vagrant ssh-config > "$ssh_config_cache"
fi

ssh -F "$ssh_config_cache" -t -t "$VAGRANT_NAME" cd "$VAGRANT_ROOT" '&&' "${a[@]}"