veronika: add readme and scripts

README.md

@@ -0,0 +1,33 @@
+# shell-history
+
+## setup
+
+
+
+## zsh
+
+`~/.zshrc`:
+
+```
+HISTDB="$HOME/dev/vlv/histdb"
+SHIST="$HOME/dev/vlv/shell-history"
+autoload -Uz compinit promptinit add-zsh-hook
+
+_history() {
+    if test "$(id -u)" -ne 0; then
+        echo "$(date --utc --iso-8601=seconds) $(hostname) $(pwd) $(fc -ln -1)" >> \
+            $HISTDB/zsh-history-$(date "+%Y-%m-%d").log;
+    fi
+}
+add-zsh-hook precmd _history
+
+_history-sync() {
+    if [[ -d "$HISTDB" ]]; then
+        () {
+            pushd -q "$HISTDB"
+            source "$SHIST/sync.sh"
+            popd -q
+        }
+    fi
+}
+```

sync.sh

@@ -0,0 +1,23 @@
+#!/bin/zsh
+
+git add zsh-history-*.log
+git commit --all --message "$(hostname): update history"
+
+git pull --no-edit --no-rebase
+
+for f in ./zsh-history-*.log; do
+    tmpfile=$(mktemp)
+    exec 3>"$tmpfile"
+    exec 4<"$tmpfile"
+    rm "$tmpfile"
+
+    grep --invert-match "^[<,>,=]\{5,\}" $f >&3
+    <&4 tee $f
+
+    sort --output="$f" "$f"
+
+    git add $f
+    git commit -m "$(hostname): resolve merge ${f}"
+done
+
+git push