text: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  # imports.
  from dev0s.classes.defaults.files import *
  from dev0s.classes.response import response as _response_
  
  # the installation object class.
  class Installation(object):
  	def __init__(self):	
  
  		if OS in ["macos"]: 
  			self.bashrc = File(path=f"/Users/{USER}/.zshrc", load=True)
  			self.link = f"source {SOURCE_PATH}/lib/bash/import\nsource {SOURCE_PATH}/lib/bash/env"
  		else: 
  			self.bashrc = File(path=f"/home/{USER}/.bashrc", load=True)
  			self.link = f". {SOURCE_PATH}/lib/bash/import\n. {SOURCE_PATH}/lib/bash/env"
  		#
  	def link(self):
  		self.bashrc.load()
  		if self.link not in self.bashrc.data:
  			self.bashrc.data += f"\n\n# DevOS:\n{self.link}\n"
  			self.bashrc.save()
  		return _response_.success(f"Successfully linked {ALIAS}.")
  	def unlink(self):
  		self.bashrc.load()
  		if self.link in file.data:
  			data = ""
  			for line in self.bashrc.data.split("\n"):
  				if "# DevOS:" in line or "# dev0s:" in line or "# dev0s." in line or self.link in line:
  					a=1
  				else:
  					data += line+"\n"
  			self.bashrc.save(data)
  		return _response_.success(f"Successfully unlinked {ALIAS}.")
  	def install(self):
  		os.system("rm -fr /tmp/dev0s && git clone -q https://github.com/vandenberghinc/dev0s.git /tmp/dev0s && bash /tmp/dev0s/requirements/installer")
  		return _response_.success(f"Successfully installed {ALIAS}.")
  	def uninstall(self):
  		print(f"{color.orange}Root permissions{color.end} required to uninstall DevOS.")
  		os.system(f"sudo rm -fr /usr/local/lib/{ALIAS}")
  		return _response_.success(f"Successfully uninstalled {ALIAS}.")
  	# system functions.
  	def __installed__(self):
  		return Files.exists(f"/usr/local/lib/{ALIAS}")
  
  