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+#!/bin/bash
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+# https://github.com/travis-ci/travis-build/blob/cbe49ea239ab37b9b38b5b44d287b7ec7a108c16/lib/travis/build/templates/header.sh#L243-L260
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+#
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+# MIT LICENSE
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+#
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+# Copyright (c) 2016 Travis CI GmbH <contact@travis-ci.org>
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+#
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+# Permission is hereby granted, free of charge, to any person obtaining a copy
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+# of this software and associated documentation files (the "Software"), to deal
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+# in the Software without restriction, including without limitation the rights
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+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+# copies of the Software, and to permit persons to whom the Software is
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+# furnished to do so, subject to the following conditions:
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+#
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+# The above copyright notice and this permission notice shall be included in
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+# all copies or substantial portions of the Software.
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+#
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+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+# THE SOFTWARE.
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+retry() {
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+ local result=0
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+ local count=1
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+
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+ while [ $count -le 3 ]; do
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+ if [ $result -ne 0 ]; then
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+ echo -e "\n${ANSI_RED}The command \"$@\" failed. Retrying, $count of 3.${ANSI_RESET}\n" >&2
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+ fi
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+
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+ "$@" && { result=0 && break; } || result=$?
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+ count=$(($count + 1))
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+ sleep 1
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+ done
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+
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+ if [ $count -gt 3 ]; then
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+ echo -e "\n${ANSI_RED}The command \"$@\" failed 3 times.${ANSI_RESET}\n" >&2
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+ fi
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+
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+ return $result
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+}
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+
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+retry $@
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