From d47e6cd1f5e7d8a855c68ac19271c6673681cffa Mon Sep 17 00:00:00 2001
From: Chris Koeritz <fred@gruntose.com>
Date: Tue, 6 Sep 2016 22:36:15 -0400
Subject: [PATCH] really tasty addition of remote compares using ssh syntax,
 e.g. host:path notation. so now can compare like this:   compare_dirs
 /z/musix surya:/z/musix to see what files are missing on one side or the
 other.

---
 scripts/files/compare_dirs.sh | 56 ++++++++++++++++++++++++++++-------
 1 file changed, 46 insertions(+), 10 deletions(-)

diff --git a/scripts/files/compare_dirs.sh b/scripts/files/compare_dirs.sh
index ee1d69ae..cb538205 100644
--- a/scripts/files/compare_dirs.sh
+++ b/scripts/files/compare_dirs.sh
@@ -11,10 +11,10 @@ if [ -z "$dir1" -o -z "$dir2" ]; then
   echo list of differences in the two directory hierarchies.
   exit 1
 fi
-if [ ! -d "$dir1/" -o ! -d "$dir2/" ]; then
-  echo The directories to be compared must already exist.
-  exit 1
-fi
+#if [ ! -d "$dir1/" -o ! -d "$dir2/" ]; then
+#  echo The directories to be compared must already exist.
+#  exit 1
+#fi
 if [ "$dir1" == "$dir2" ]; then
   echo "The two directories are the exact same folder name.  So that's silly."
   exit 1
@@ -23,15 +23,51 @@ fi
 out1="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
 out2="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
 
-pushd "$dir1" &>/dev/null
-find . >"$out1"
+
+
+
+#hmmm: need error checking here!!!!
+
+
+
+
+
+if [[ $dir1 == *":"* ]]; then
+  # host processing on first dir.
+  host1=${dir1%:*}
+  dir1=${dir1#*:}
+echo "got host1 as $host1"
+echo "got new dir1 as $dir1"
+fi
+if [[ $dir2 == *":"* ]]; then
+  # host processing on second dir.
+  host2=${dir2%:*}
+  dir2=${dir2#*:}
+echo "got host2 as $host2"
+echo "got new dir2 as $dir2"
+fi
+if [ -z "$host1" ]; then
+  # fully local compare location for first dir.
+  pushd "$dir1" &>/dev/null
+  find . >"$out1"
+  popd &>/dev/null
+else
+  # remote compare location for first dir.
+  ssh "$host1" "cd \"$dir1\" && find ." >"$out1"
+fi
+# sort the output from that find.
 sort "$out1" >"$out1".sort
-popd &>/dev/null
 
-pushd "$dir2" &>/dev/null
-find . >"$out2"
+if [ -z "$host2" ]; then
+  # fully local compare location for second dir.
+  pushd "$dir2" &>/dev/null
+  find . >"$out2"
+  popd &>/dev/null
+else
+  # remote compare location for second dir.
+  ssh "$host2" "cd \"$dir2\" && find ." >"$out2"
+fi
 sort "$out2" >"$out2".sort
-popd &>/dev/null
 
 diff "$out1".sort "$out2".sort
 
-- 
2.34.1