diff --git a/Wiki-OcttKB/tiddlers/Normal/Android.tid b/Wiki-OcttKB/tiddlers/Normal/Android.tid
index f499484..f732f51 100644
--- a/Wiki-OcttKB/tiddlers/Normal/Android.tid
+++ b/Wiki-OcttKB/tiddlers/Normal/Android.tid
@@ -19,6 +19,8 @@ title: Android
 
 //Note: some resources that are related to Android but also closely Java may be included under the [[Java]] section.//
 
+* [[All you need to know about LOST.DIR folder on Android devices|http://thesundaycoder.blogspot.com/2014/06/all-you-need-to-know-about-lostdir.html]]
+
 !!! ''Emulation / Containerization''
 
 * ''Anbox'' (discontinued) - //Android in a Box// - [[[Git|https://github.com/anbox]]]
diff --git a/Wiki-OcttKB/tiddlers/Normal/Email.tid b/Wiki-OcttKB/tiddlers/Normal/Email.tid
new file mode 100644
index 0000000..3185d06
--- /dev/null
+++ b/Wiki-OcttKB/tiddlers/Normal/Email.tid
@@ -0,0 +1,10 @@
+title: Email
+
+<<^wikipediaframe Email>>
+
+* [[What characters are allowed in an email address?|https://stackoverflow.com/questions/2049502/what-characters-are-allowed-in-an-email-address]] (contains scary examples)
+
+!! ''Hosting''
+
+* [[Adding aliases inboxes using Postfix|https://unix.stackexchange.com/questions/319222/adding-aliases-inboxes-using-postfix]] --- add new lines in /etc/aliases as needed for aliases, with format `desidered_alias: real_username`, then run `newaliases`.
+* [[Quickly test an IMAP server with telnet|https://coderwall.com/p/h-tzia/quickly-test-an-imap-server-with-telnet]]
diff --git a/Wiki-OcttKB/tiddlers/Normal/Git.tid b/Wiki-OcttKB/tiddlers/Normal/Git.tid
index 0c1b5a3..67569fa 100644
--- a/Wiki-OcttKB/tiddlers/Normal/Git.tid
+++ b/Wiki-OcttKB/tiddlers/Normal/Git.tid
@@ -7,10 +7,12 @@ title: Git
 
 <<^wikipediaframe Git en>>
 
-* [[Never use git submodules|https://diziet.dreamwidth.org/14666.html]] - //git submodules are always the wrong solution. Yes, even the to the problem they were specifically invented to solve.//
+* [[Never use git submodules|https://diziet.dreamwidth.org/14666.html]] --- //git submodules are always the wrong solution. Yes, even the to the problem they were specifically invented to solve.//
+
+* [[Converting a Git (GitLab) project.bundle export to simple Git repo|https://gist.github.com/paulgregg/181779ad186221aaa35d5a96c8abdea7]]
 
 !!! ''Apps''
-* [[GitJournal|https://gitjournal.io/]] - //Mobile first Markdown Notes integrated with Git// - <<[ "[[Git|https://github.com/GitJournal]]">>
+* [[GitJournal|https://gitjournal.io/]] - //Mobile first Markdown Notes integrated with Git// --- <<[ "[[Git|https://github.com/GitJournal]]">>
 
 !!! ''Servers''
 
diff --git a/Wiki-OcttKB/tiddlers/Normal/Linux.tid b/Wiki-OcttKB/tiddlers/Normal/Linux.tid
index f280585..4311663 100644
--- a/Wiki-OcttKB/tiddlers/Normal/Linux.tid
+++ b/Wiki-OcttKB/tiddlers/Normal/Linux.tid
@@ -25,11 +25,15 @@ title: Linux
 
 * [[SquashFS|https://tldp.org/HOWTO/SquashFS-HOWTO/whatis.html]], [[DwarFS|https://github.com/mhx/dwarfs]]
 
+!!! ''Benchmarks''
+
+* [[Paul Raspberry Pi Benchmarks|https://willy-tech.de/raspberry-pi-benchmarks/]]
+
 !! ''Tools''
 
 * [[Flatpak|https://flatpak.org/]] --- //Linux application sandboxing and distribution framework// --- <<[# Git "https://github.com/flatpak">> <<[# "Dev Docs" "https://docs.flatpak.org/en/latest/">>
 ** [[Flathub|https://flathub.org/]] --- Official build and distribution service for Flatpak applications --- <<[ "[[Git|https://github.com/flathub]]">>
+** <<RedditL r/flatpak/comments/m09ma4/save_flathub_runtime_and_sdk_as_local_flatpak "Save Flathub runtime and SDK as local Flatpak file bundle">>
 
 * [[Wine|https://www.winehq.org/]] --- //Compatibility layer for running Windows applications on POSIX-compliant systems//
 ** [[WineZGUI|https://github.com/fastrizwaan/WineZGUI]] --- //Wine GUI using Zenity - Play and Share!// --- <<#[ Flatpak "https://github.com/fastrizwaan/flatpak-wine">>
-
diff --git a/Wiki-OcttKB/tiddlers/Normal/Terminal/multiplexer.tid b/Wiki-OcttKB/tiddlers/Normal/Terminal/multiplexer.tid
new file mode 100644
index 0000000..0349283
--- /dev/null
+++ b/Wiki-OcttKB/tiddlers/Normal/Terminal/multiplexer.tid
@@ -0,0 +1,9 @@
+title: Terminal/multiplexer
+
+<<^wikipediaframe "Terminal multiplexer">>
+
+!! ''GNU Screen''
+
+<<^wikipediaframe "GNU Screen">>
+
+* [[Setting a name for a screen session|https://unix.stackexchange.com/questions/12227/setting-a-name-for-a-screen-session]] --- spawn with `-S <Name>`, attach to with `-xS <Name>`
diff --git a/Wiki-OcttKB/tiddlers/Normal/Unix/Shell.tid b/Wiki-OcttKB/tiddlers/Normal/Unix/Shell.tid
index 8b98bb7..7ba39c0 100644
--- a/Wiki-OcttKB/tiddlers/Normal/Unix/Shell.tid
+++ b/Wiki-OcttKB/tiddlers/Normal/Unix/Shell.tid
@@ -9,3 +9,5 @@ title: Unix/Shell
 
 * [[Input Field Separators|https://en.wikipedia.org/wiki/Input_Field_Separators]]
 * [[Split string with symbol|https://stackoverflow.com/a/10638555]]
+* [[$PWD vs. pwd regarding portability|https://stackoverflow.com/questions/10795014/pwd-vs-pwd-regarding-portability]] --- `$(pwd)` has issues with paths with newline chars, `$PWD` is fine but can be wrongly reset by badly-made programs; all appear to be available on all good shells.
+* [[How to find the last field using 'cut'|https://stackoverflow.com/questions/22727107/how-to-find-the-last-field-using-cut]] --- `echo 'maps.google.com' | rev | cut -d'.' -f 1 | rev`
diff --git a/Wiki-OcttKB/tiddlers/System/$/OcttKB/Repo/GitLab.CrossRepoSync.sh.txt b/Wiki-OcttKB/tiddlers/System/$/OcttKB/Repo/GitLab.CrossRepoSync.sh.txt
index 9ee3b2d..362165e 100644
--- a/Wiki-OcttKB/tiddlers/System/$/OcttKB/Repo/GitLab.CrossRepoSync.sh.txt
+++ b/Wiki-OcttKB/tiddlers/System/$/OcttKB/Repo/GitLab.CrossRepoSync.sh.txt
@@ -45,7 +45,10 @@ do
 	cd ..
 done
 
+mv ./System ./System.tmp/System
+mv ./System.tmp/System/\$ ./System
 mv ./System ./Normal ./tiddlers
 rm -rf ./System.tmp ./Normal.tmp
+
 cd ..
 GitPush "OcttKB Cross-Repo Sync (HTML to Raw)"