General Enhancements (#50)

* Hide email clients.

* Always install CRON.

* Add variable for the static IP to Hyperling.com.

* Change IPs.

* Beginnings of a script to do IPv6 SCP.

* Add ability to specify which port SSH runs on.

* Require the destination.

files/scripts/ssh6.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+# 2024-01-28 Hyperling
+# Make it a little easier to handle IPv6 addresses with SSH and SCP.
+
+## Variables ##
+
+DIR="$(dirname -- "${BASH_SOURCE[0]}")"
+PROG="$(basename -- "${BASH_SOURCE[0]}")"
+echo "Running '$DIR/$PROG'."
+
+# Defaults
+user="$LOGNAME"
+port=22
+output=""
+receive="N"
+
+## Functions ##
+
+function usage {
+	echo -n "$PROG -d DESTINATION [-p PORT] [-u USER] [-i INPUT] "
+	echo "[-o OUTPUT] [-r] [-h]"
+	cat <<- EOF
+		Script around having to sometimes doing "[IPv6]" syntax.
+		  -d : The IP address of the external system to connect to.
+		  -u : User to connect as. Defaults to current user.
+		  -p : Port which the external system is listening on.
+		  -i : File or folder which needs sent. This is done recursively.
+		         If this is not provided then only an SSH is done, not SCP.
+		  -o : Location on the receiving end where things should land.
+		         Defaults to :, meaning the foreign user's home directory.
+		  -r : Receive a file to the local machine, rather than send a file out.
+		  -h : Print this usage text.
+	EOF
+	exit $1
+}
+
+## Parameters ##
+
+while getopts ":d:u:i:o:rh" opt; do
+	case "$opt" in
+		d) destination="$OPTARG" ;;
+		u) user="$OPTARG" ;;
+		p) port="$OPTARG" ;;
+		i) input="$OPTARG" ;;
+		o) output="$OPTARG" ;;
+		r) receive="Y" ;;
+		h) usage 0 ;;
+		*) echo "ERROR: $OPTARG not recognized." >&2
+			usage 1;;
+	esac
+done
+
+## Validations ##
+
+if [[ -z $destination ]]; then
+	echo "ERROR: Destination was not provided. $destination" >&2
+	usage 2
+fi
+
+if [[ -z $input && -n $output ]]; then
+	echo "ERROR: Output '$output' was provided but not input. $input" >&2
+	usage 3
+fi
+
+## Main ##
+
+date
+if [[ -n $input ]]; then
+	if [[ $receive == "N" ]]; then
+		echo -n "Sending '$input' from localhost to '$user@$destination' "
+		echo " at '$output' using port '$port'."
+		scp -r -p$port "$user@[$destination]":"$input" "$output"
+	elif [[ $receive == "Y" ]]; then
+		echo -n "Receiving '$input' from '$user@$destination' "
+		echo " to '$output' on localhost using port '$port'."
+		scp -r -p$port "$input" "$user@[$destination]":"$output"
+	else
+		echo "ERROR: Receive variable is screwed up. $receive" >&2
+	fi
+else
+	echo "No input file provided, connecting to destination."
+	ssh -t $user@$destination
+fi
+date
+
+## Finish ##
+
+exit 0