From 9a80b1370485bfcd7f7f3ba9a9b417c753a6d205 Mon Sep 17 00:00:00 2001
From: fro <committer@tuxwarrior.xyz>
Date: Fri, 31 Oct 2025 05:51:19 -0500
Subject: [PATCH] /+ decimal_to_base36()

---
 dots/bash/.bashrc | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/dots/bash/.bashrc b/dots/bash/.bashrc
index 355286f..d2848a2 100644
--- a/dots/bash/.bashrc
+++ b/dots/bash/.bashrc
@@ -344,6 +344,15 @@ ascii() {
     fi
 }
 
+# https://boulderappsco.postach.io/post/convert-decimal-to-base-36-alpha-numeric-in-bash-linux
+function decimal_to_base36(){
+    BASE36=($(echo {0..9} {A..Z}));
+    arg1=$@;
+    for i in $(bc <<< "obase=36; $arg1"); do
+        echo -n ${BASE36[$(( 10#$i ))]}
+    done && echo
+}
+
 gpxImporter() {
     cd /home/poq/syncDir/gitRepos/gt.op.fo/gpx-importer/go/src/
     go run main.go
@@ -481,6 +490,10 @@ rotl() {
 }
 
 rote() {
+    rote36 $1
+}
+
+rote10() {
     if [[ -n $1 ]] ; then
 
         datestamp=$(date +%y%m%d)_
@@ -493,6 +506,28 @@ rote() {
     fi
 }
 
+rote36() {
+    if [[ -n $1 ]] ; then
+
+        datestamp=$(date +%y%m%d)_
+
+        year=$(decimal_to_base36 $(date +%y))
+        month=$(decimal_to_base36 $(date +%m))
+        day=$(decimal_to_base36 $(date +%d))
+
+        datestamp=${year}${month}${day}_
+        datestamp=`echo "${datestamp}" | tr '[A-Z]' '[a-z]'`
+        rotl=$(rotl $1 0)
+        # ${param/pattern/replacement}
+        rotl="${rotl/./}"
+        emailaddress=$datestamp$rotl"@468910.xyz"
+        echo $emailaddress
+
+    fi
+}
+
+
+
 # ---
 # mounting
 # ---