new script for hiding output on success

[feisty_meow.git] / scripts / testing / squelch_unless_error.sh

diff --git a/scripts/testing/squelch_unless_error.sh b/scripts/testing/squelch_unless_error.sh
new file mode 100644 (file)
index 0000000..b59ca5a
--- /dev/null
+++ b/scripts/testing/squelch_unless_error.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+# redirects standard out and standard error output to temp files and runs all the parameters to this script as a command.
+# if there is no error, then the files are just deleted.
+# if there was an error, then the two output file are sent to standard out and standard error.
+# an additional error message is sent to standard error.
+
+#  echo "squelch args: $(printf -- "[%s] " "${@}")"
+
+newout="$(mktemp /tmp/squelch.out.XXXXXX)"
+newerr="$(mktemp /tmp/squelch.err.XXXXXX)"
+
+eval "${@}" >"$newout" 2>"$newerr"
+retval=$?
+
+if [ $retval != 0 ]; then
+  # there was an error during the execution of the command.
+  cat "$newout"
+  cat "$newerr" >&2
+  echo "An error was returned during execution of: ${@}" >&2
+fi
+
+# clean up.
+\rm "$newout" "$newerr"
+
+