added more options for printers - if none fount it should output to stdout

txt2printr.sh

@@ -6,7 +6,24 @@
 # Env:   PRINTER_DEV - printer device node (default: /dev/lp0)
 
 infile="${1:-ascii-img.txt}"
-dev="${PRINTER_DEV:-/dev/lp0}"
+# Source - https://stackoverflow.com/a/638980
+# Posted by John Feminella, modified by community. See post 'Timeline' for change history
+# Retrieved 2026-07-14, License - CC BY-SA 4.0
+
+if [ -f /dev/lp0 ]; then
+    dev="${PRINTER_DEV:-/dev/lp0}"
+fi
+
+if [ -f /dev/usb/lp0 ]; then
+    dev="${PRINTER_DEV:-/dev/usb/lp0}"
+fi
+
+
+if [ ( ! -f /dev/lp0 ) && ( ! -f /dev/usb/lp0 )]; then
+    dev="${PRINTER_DEV:-/dev/stdout}"
+fi
+
+
 
 if [ ! -f "$infile" ]; then
     echo "txt2printr: file not found: $infile" >&2