Add installation script

[andresgongora]

Add installation scripts that take care of copying everything into place, and if possible, an AUR script, for:

• Better bash promt
• System-status terminal greeter
• Prevent multiple additions of the anchor in /etc/bash.bash.rc
• Automatic installation and manual installation
• Uninstall
• Update instructions for installer
• Update instructions for user-specific config

[andresgongora]

The script should take care of everything but downloading the repo. That should be handled by the AUR package or the user. There should basically be an install.sh that does everything for the user. THe following function are desirable:

• If the user has root privileges, put it somewhere on the system
• If the user has no root privileges, ask where to put the scripts. Use the current pwd as default
• Copy the example config files to ~/.config/scripts

[andresgongora]

Some dirty notes

If installed by AUR or DEB:
/usr/bin is for distribution-managed normal user programs.

If installed manually:
/usr/local/bin is for normal user programs not managed by the distribution package manager, e.g. locally compiled packages. You should not install them into /usr/bin because future distribution upgrades may modify or delete them without warning.

teh path of where to install it shoudl be an external script parameter, set by default to /usr/local/bin, but which might be overriden by AUR or DEB.
The installer should also check whether the script already exists in any other folder (/usr/local/bin or /usr/bin) regardless of how it is installed, and remove it.

To apply to all bashrc: /etc/bash.bashrc
But add several and reduntant checks to see if scripts are in place and so on
Also, DO NOT apply to root account
When modifying /etc/bash.bashrc, make sure there is not an entry for the scripts already in place. Ideally, do not add everything, but source a script that takes care of all.
That way, only 1 line is added to /etc/bash.bashrc and its easier to check and modify in the future

[andresgongora]

@olmari Can you test the script? The instructions are on the README.md file

[andresgongora]

Working on this to remove recursivity

[andresgongora]

by @olmari, extracted from his own bash.basrc: method to handle problems with the script

# if the command-not-found package is installed, use it
if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then
	function command_not_found_handle {
	        # check because c-n-f could've been removed in the meantime
                if [ -x /usr/lib/command-not-found ]; then
		   /usr/lib/command-not-found -- "$1"
                   return $?
                elif [ -x /usr/share/command-not-found/command-not-found ]; then
		   /usr/share/command-not-found/command-not-found -- "$1"
                   return $?
		else
		   printf "%s: command not found\n" "$1" >&2
		   return 127
		fi
	}
fi

[andresgongora]

Added working installer and updated README to features/installer.

[andresgongora]

Installation works great. See latest push to branch features/installer.
But, I still have the following problem:

• I'm unable to control when the hook is appended to /etc/bash.bashrc. Ideally, it should check if the hook is already present in the file (something like a multi-line grep) and only append it if not

• Likewise, for the uninstaller, I really need to check if the hook is in /etc/bash.bashrc, and if so, delete it. Otherwise, the script will leave residues in the system.

In both cases, the hook is stored in the variable hook. The script should do the automatic append/removal using the content of said variable.