allow to backup a specific host

uberspace-backup.sh

@@ -26,6 +26,8 @@ else
   SSH_KEY=~/.ssh/id_rsa
 fi
 
+ARG1="$1"
+
 # Get current date
 DATE=$(date +"%Y-%m-%d_%H-%M")
 LOG="$CURDIR"/backup.log
@@ -48,6 +50,18 @@ while read -r line; do
   if echo "$line" | grep -qE "^\s*(#|$)"; then continue; fi
 
   RHOST=$(echo "$line" | cut -d";" -f1 | trim)
+
+  # Jump to next line if this line's host does not match host of ARG1 (if given)
+  if [[ "${ARG1}" != "" ]] && [[ "${ARG1}" != "${RHOST}" ]]; then
+    continue
+  fi
+  # Task ssh-checker.sh to check this host
+  if ! "${CURDIR}"/ssh-checker.sh "${RHOST}"; then
+    logecho "${RHOST}: ERROR when connecting via SSH. Please run ssh-checker.sh to debug."
+    logecho "${RHOST}: Aborting backup after an error."
+    continue
+  fi
+
   RUSER=$(echo "$RHOST" | cut -d"@" -f1)
   ALLRDIR=$(echo "$line" | cut -d";" -f2 | trim)
   US_VERSION=$(echo "$line" | cut -d";" -f3 | trim)
@@ -65,13 +79,6 @@ while read -r line; do
 
   logecho "${RHOST}: Starting backups"
 
-  # Task ssh-checker.sh to check this host
-  if ! "${CURDIR}"/ssh-checker.sh "${RHOST}"; then
-    logecho "${RHOST}: ERROR when connecting via SSH. Please run ssh-checker.sh to debug."
-    logecho "${RHOST}: Aborting backup after an error."
-    continue
-  fi
-
   NORDIR=$(echo "$ALLRDIR" | grep -o "|" | wc -l)
   NORDIR=$(($NORDIR + 1))