fix: make shellcheck happy and use ssh agent fw

gentoo-sync.sh

@@ -7,10 +7,10 @@ HOSTNAME_TAG="${HOSTNAME:-$(hostname)}"
 # remote trigger
 SERVER_USER="mira"
 SERVER_IP="192.168.102.148"
-SERVER_BINHOST_DIR="~/gentoo-pill"
+SERVER_BINHOST_DIR="$HOME/gentoo-pill"
 
 HOST_DIR="$PILL_REPO/hosts/$HOSTNAME_TAG"
-echo "> Syncing configuration for: $HOSTNAME_TAG"
+echo "Syncing configuration for: $HOSTNAME_TAG"
 
 if [[ -d "$PILL_REPO/.git" ]]; then
     git -C "$PILL_REPO" pull --rebase --autostash
@@ -21,16 +21,16 @@ fi
 
 mkdir -p "$HOST_DIR"
 
-echo "> Syncing World file component..."
+echo "Syncing World file component..."
 cp /var/lib/portage/world "$HOST_DIR/world"
 
 CONFIGS=(package.use package.accept_keywords package.license package.mask package.unmask package.env repos.conf)
 
-echo "> Syncing Portage components..."
+echo "Syncing Portage components..."
 for type in "${CONFIGS[@]}"; do
     local_src="/etc/portage/$type"
     repo_dest="$HOST_DIR/$type"
-    
+
     # rm -rf "$repo_dest" 
 
     if [[ -e "$local_src" ]]; then
@@ -40,21 +40,21 @@ for type in "${CONFIGS[@]}"; do
     fi
 done
 
-echo "> Pushing..."
+echo "Pushing..."
 cd "$PILL_REPO"
 
 if [[ -n $(git status --porcelain) ]]; then
     git add .
     git commit -m "sync: $HOSTNAME_TAG $(date +'%Y-%m-%d %H:%M')"
     git push
-    echo "> Changes pushed successfully."
-    
+    echo "Changes pushed successfully."
+
     # trigger the remote
     if [[ -n "$SERVER_IP" ]]; then
-        echo "> Triggering binhost build @ [$SERVER_IP]..."
-        ssh "${SERVER_USER}@${SERVER_IP}" \
-            "cd ${SERVER_BINHOST_DIR} && ./binhost.sh"
+        echo "Triggering binhost build @ [$SERVER_IP]..."
+        ssh -A "${SERVER_USER}@${SERVER_IP}" \
+            "cd \"${SERVER_BINHOST_DIR}\" && ./binhost.sh"
     fi
 else
-    echo "> No changes, binhost trig skipped"
+    echo "No changes, binhost trig skipped"
 fi