add cache script (extremely useful)

1 files changed, 18 insertions, 0 deletions

diff --git a/cache b/cache
new file mode 100755
index 0000000..60c09ae
--- /dev/null
+++ b/cache
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+#
+# cache commands for speed
+#
+set -eu
+CACHE_DIR=~/.cache/command-cache
+if [[ "$1" = "clear" ]]; then
+  rm -rf $CACHE_DIR
+else
+  mkdir -p $CACHE_DIR
+  file="$CACHE_DIR/$(base64 <<< "$@")"
+  if [[ ! -e "$file" ]]
+  then
+      echo "making $file" >&2
+      $@ > "$file"
+  fi
+  cat "$file"
+fi