add infloop script to loop while other command is true/false

1 files changed, 43 insertions, 0 deletions

diff --git a/infloop b/infloop
new file mode 100755
index 0000000..dde7c86
--- /dev/null
+++ b/infloop
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+MUSTBETRUE=y
+unset MUSTBEFALSE
+count=1
+for i in $@; do
+  count=$(printf "%s + 1\n" "$count" | bc)
+  [ -n "$BUFFERREAD" ] && BUFFERTIME="$i" && unset BUFFERREAD && continue
+  case "$i" in
+    "-t")
+      MUSTBETRUE=y
+      unset MUSTBEFALSE
+      ;;
+    "-f")
+      MUSTBEFALSE=y
+      unset MUSTBETRUE
+      ;;
+    "-c")
+      break 2
+      ;;
+    "-b")
+      BUFFERREAD="y"
+      ;;
+    "-*")
+      printf "Unsupported argument. Please use -t if exit on true, and -f if exit on false.\n"
+      exit 1
+  esac
+done
+
+if [ $# -ge $count ]; then
+  COMMAND="${@:$count}"
+else
+  printf "No command given!\n" && exit 1
+fi
+
+while true; do
+  if [ "$MUSTBEFALSE" ]; then
+    $COMMAND || exit 0
+  else
+    $COMMAND && exit 0
+  fi
+  sleep "${BUFFERTIME:-1}"
+done