diff --git a/ZFS/zfs-test-encryption-speeds--linux--copy-iso.sh b/ZFS/zfs-test-encryption-speeds--linux--copy-iso.sh
new file mode 100644
index 0000000..b3a4b36
--- /dev/null
+++ b/ZFS/zfs-test-encryption-speeds--linux--copy-iso.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Linux version
+# basic copy ISO test timings after running zfs-test-encryption-speeds to create encrypted datasets of each type
+
+stime=$(date)
+
+# TODO editme
+zp=zint500 # This is where the Test-aes* datasets live
+
+tmpfile=$HOME/zfstestencrspeeds.txt
+outfile=$HOME/zfs-test-encryption-speeds-results.log
+
+#source ~/bin/failexit.mrg
+# failexit.mrg
+function failexit () {
+  echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
+  exit $1
+}
+
+useramdisk=1
+[ $useramdisk -eq 0 ] && isopath=/Volumes/zsgtera4/shrcompr-zsgt2B/ISO # use if < 6GB RAM installed
+# xxx TODO EDITME ^^
+[ "$isopath" = "" ] && isopath=/dev/shm
+
+[ -e "$isopath" ] || failexit 101 "! Ramdisk or ISO source not detected - run zfs-test-encryption-speeds to create it"
+
+cd "$isopath" && pwd
+
+function ttime () {
+  result=$(date +%s) 
+  # see ' man date ' -- seconds
+}
+
+# clearit
+> $tmpfile
+
+# supported encryption at time of writing:
+# encryption=aes-128-ccm,aes-192-ccm,aes-256-ccm,aes-128-gcm,aes-192-gcm,aes-256-gcm
+
+echo "o $(date) + Copying ISO file(s) to each encrypted dataset"
+for d in /$zp/Test-aes*; do
+  date; ttime; tstart=$result
+  time cp -vf *.iso $d
+  time sync
+  date; ttime; tend=$result
+  
+  let csecs=$tend-$tstart
+  echo "$csecs Seconds to Copy ISO to $d" |tee -a $tmpfile
+#  countdown 10 
+  echo "Pausing 5 seconds"
+  sleep 5
+done
+
+ntime=$(date)
+
+echo "o Start time: $stime -- End time: $ntime"
+sort -n $tmpfile > $outfile && rm -f $tmpfile
+ls -al $outfile
+
+exit;
+
+# 2021.april mod osx version to linux