feature(BACKUP): add SSH port customization

- borgSSHPort variable in details file
- read and appended to RSH connection string
- default to standard port 22

Closes github #9

backup/backup.details

@@ -20,6 +20,9 @@
 # default is "$HOME" or "~$USER" in that order.  If you're unsure, try "$HOME"
 borgBaseDir = "/var/borgbackup"
 
+# SSH port on which your borg server listens. By default, this is port 22.
+borgSSHPort = 22
+
 # full path to the SSH key used to connect to your remote backup server
 borgSSHKey = "/var/borgbackup/private.key"
 

backup/backup.sh

@@ -529,7 +529,16 @@ elif [ ! -f "${borgSSHKey}" ]; then
 fi
 printf "%sdetails:borgSSHKey %s-- %s[OK]%s\n" \
     "$magenta" "$norm" "$ok" "$norm" >> "$logFile"
-export BORG_RSH="ssh -i ${borgSSHKey}"
+## check SSH port
+if [ -z "${borgSSHPort}" ]; then
+    borgSSHPort=22
+    printf "%sdetails:borgSSHPort %s-- %s[DEFAULT]%s\n" \
+        "$magenta" "$norm" "$ok" "$norm" >> "$logFile"
+else
+    printf "%sdetails:borgSSHPort %s-- %s[CUSTOM]%s\n" \
+        "$magenta" "$norm" "$ok" "$norm" >> "$logFile"
+fi
+export BORG_RSH="ssh -i ${borgSSHKey} -p ${borgSSHPort}"
 
 ## check borg repo connect string
 if [ -z "${borgConnectRepo}" ]; then