diff --git a/print_jupyter_link.sh b/print_jupyter_link.sh
index 8e77ca2..ab8f49d 100644
--- a/print_jupyter_link.sh
+++ b/print_jupyter_link.sh
@@ -1,15 +1,15 @@
 #!/usr/bin/env bash
-
-# Script to extract where is the jupyter session running by parsing the log file
-# This is useful when re-loging to the same node or if one misses it when the new jupyter session is initiated with start_jupyter.sh
+# Print the JupyterLab URL from the latest jupyterlab_*.log.
+# On Cristallina the real token is redacted in the log ("token=..."),
+# so if the token is missing or redacted we replace it with the most commonly used
+# token "Cristallina" to produce a usable URL.
 
 set -euo pipefail
 
+# Find newest Jupyter log in $HOME
 LOGFILE=$(
   find "$HOME" -maxdepth 1 -type f -name "jupyterlab_*.log" -printf "%T@ %p\n" 2>/dev/null \
-  | sort -n \
-  | awk '{print $2}' \
-  | tail -n 1
+  | sort -n | awk '{print $2}' | tail -n 1
 )
 
 if [[ -z "${LOGFILE:-}" || ! -f "$LOGFILE" ]]; then
@@ -17,38 +17,23 @@ if [[ -z "${LOGFILE:-}" || ! -f "$LOGFILE" ]]; then
   exit 1
 fi
 
-# Slurp the whole logfile and try multiple patterns.
-perl -0777 -ne '
-  my $s = $_;
-  $s =~ s/\r//g;
-  $s =~ s/\n/ /g;
+# Slurp logfile into one line to handle wrapped URLs
+URL=$(
+  tr '\n' ' ' < "$LOGFILE" \
+  | grep -Eo 'https?://[^[:space:]]+' \
+  | grep -E '/(lab|tree)\?' \
+  | head -n 1 || true
+)
 
-  # 1) Direct URL that already contains token=
-  if ($s =~ m{(https?://[^\s"'"'"']+\?token=[^\s"'"'"'&]+)} ) {
-    print "$1\n"; exit 0;
-  }
-  if ($s =~ m{(https?://[^\s"'"'"']+/lab\?token=[^\s"'"'"'&]+)} ) {
-    print "$1\n"; exit 0;
-  }
-  if ($s =~ m{(https?://[^\s"'"'"']+/tree\?token=[^\s"'"'"'&]+)} ) {
-    print "$1\n"; exit 0;
-  }
-
-  # 2) URL and token appear separately (wrapped / split)
-  my ($base)  = ($s =~ m{(https?://[^\s"'"'"']+)});       # first URL-looking thing
-  my ($token) = ($s =~ m{token=([A-Za-z0-9]+)});      # token value
-  if ($base && $token) {
-    $base =~ s/\?token=.*$//;
-    print $base . "?token=" . $token . "\n";
-    exit 0;
-  }
-
-  exit 1;
-' "$LOGFILE" || {
-  echo "Could not find a Jupyter token link in:"
+if [[ -z "${URL:-}" ]]; then
+  echo "Could not find a Jupyter URL in:"
   echo "  $LOGFILE"
-  echo
-  echo "Try:"
-  echo "  grep -n -E \"token=|http://|https://\" \"$LOGFILE\" | head -n 80"
   exit 1
-}
+fi
+
+# If token is missing or redacted, replace with a 'Cristallina' token
+if [[ "$URL" != *"token="* || "$URL" == *"token=..."* ]]; then
+  URL="${URL%%\?*}?token=Cristallina"
+fi
+
+echo "$URL"
\ No newline at end of file