diff --git a/cdist/conf/type/__sed/explorer/file b/cdist/conf/type/__sed/explorer/file
new file mode 100755
index 00000000..ec3d0fe8
--- /dev/null
+++ b/cdist/conf/type/__sed/explorer/file
@@ -0,0 +1,16 @@
+#!/bin/sh -e
+
+if [ -f "$__object/parameter/file" ]
+then
+    file="$( cat "$__object/parameter/file" )"
+else
+    file="/$__object_id"
+fi
+
+if [ ! -e "$file" ]
+then
+    echo "$file does not exist" >&2
+    exit 1
+fi
+
+cat "$file"
diff --git a/cdist/conf/type/__sed/gencode-remote b/cdist/conf/type/__sed/gencode-remote
new file mode 100755
index 00000000..f99c5a88
--- /dev/null
+++ b/cdist/conf/type/__sed/gencode-remote
@@ -0,0 +1,58 @@
+#!/bin/sh -e
+
+if [ -f "$__object/parameter/file" ]
+then
+    file="$( cat "$__object/parameter/file" )"
+else
+    file="/$__object_id"
+fi
+
+script="$( cat "$__object/parameter/script" )"
+
+if [ "$script" = '-' ]
+then
+    script="$( cat "$__object/stdin" )"
+fi
+
+# since stdin is not available in explorer, we pull file from target with explorer
+
+file_from_target="$__object/explorer/file"
+
+sed_cmd='sed'
+
+if [ -f "$__object/parameter/regexp-extended" ]
+then
+    sed_cmd="$sed_cmd -E"
+fi
+
+# do sed dry run, diff result and if no change, then there's nothing to do
+# also redirect diff's output to stderr for debugging purposes
+
+if echo "$script" | "$sed_cmd" -f - "$file_from_target" | diff -u "$file_from_target" - >&2
+then
+    exit 0
+fi
+
+# we can't use -i, because it's not posix, so we fly with tempfile and cp
+# and we use cp because we want to preserve destination file's attributes
+
+# shellcheck disable=SC2016
+echo 'tmp="$__object/tempfile"'
+
+echo "$sed_cmd -f - '$file' > \"\$tmp\" << EOF"
+
+echo "$script"
+
+echo 'EOF'
+
+echo "cp \"\$tmp\" '$file'"
+
+# shellcheck disable=SC2016
+echo 'rm -f "$tmp"'
+
+echo 'change' >> "$__messages_out"
+
+if [ -f "$__object/parameter/onchange" ]
+then
+    cat "$__object/parameter/onchange"
+fi
diff --git a/cdist/conf/type/__sed/man.rst b/cdist/conf/type/__sed/man.rst
new file mode 100644
index 00000000..86789363
--- /dev/null
+++ b/cdist/conf/type/__sed/man.rst
@@ -0,0 +1,57 @@
+cdist-type__sed(7)
+==================
+
+NAME
+----
+cdist-type__sed - Transform text files with ``sed``
+
+
+DESCRIPTION
+-----------
+Transform text files with ``sed``.
+
+
+REQUIRED MULTIPLE PARAMETERS
+----------------------------
+script
+   ``sed`` script.
+   If ``-`` then the script is read from ``stdin``.
+
+
+OPTIONAL PARAMETERS
+-------------------
+file
+   Path to the file. Defaults to ``$__object_id``.
+
+onchange
+   Execute this command if ``sed`` changes file.
+
+
+BOOLEAN PARAMETERS
+------------------
+regexp-extended
+   Use extended regular expressions in the script.
+   Might not be supported with every ``sed`` version.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+   __sed /tmp/foobar --script 's/foo/bar/'
+
+   echo 's/foo/bar/' | __sed foobar --file /tmp/foobar --script -
+
+
+AUTHORS
+-------
+Ander Punnar <ander-at-kvlt-dot-ee>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Ander Punnar. You can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
diff --git a/cdist/conf/type/__sed/parameter/boolean b/cdist/conf/type/__sed/parameter/boolean
new file mode 100644
index 00000000..1ad75c5d
--- /dev/null
+++ b/cdist/conf/type/__sed/parameter/boolean
@@ -0,0 +1 @@
+regexp-extended
diff --git a/cdist/conf/type/__sed/parameter/optional b/cdist/conf/type/__sed/parameter/optional
new file mode 100644
index 00000000..fa86f917
--- /dev/null
+++ b/cdist/conf/type/__sed/parameter/optional
@@ -0,0 +1,2 @@
+file
+onchange
diff --git a/cdist/conf/type/__sed/parameter/required_multiple b/cdist/conf/type/__sed/parameter/required_multiple
new file mode 100644
index 00000000..84f7e31d
--- /dev/null
+++ b/cdist/conf/type/__sed/parameter/required_multiple
@@ -0,0 +1 @@
+script