.flock.sh

#!/bin/sh
#############################################################################
# Copyright (c) 2017-2018, Intel Corporation                                #
# All rights reserved.                                                      #
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# modification, are permitted provided that the following conditions        #
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#    notice, this list of conditions and the following disclaimer.          #
# 2. Redistributions in binary form must reproduce the above copyright      #
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#    documentation and/or other materials provided with the distribution.   #
# 3. Neither the name of the copyright holder nor the names of its          #
#    contributors may be used to endorse or promote products derived        #
#    from this software without specific prior written permission.          #
#                                                                           #
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       #
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT         #
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR     #
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    #
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              #
#############################################################################
# Hans Pabst (Intel Corp.)
#############################################################################

FLOCK=$(which flock 2>/dev/null)

if [ -d $1 ]; then
  ABSDIR=$(cd $1; pwd -P)
elif [ -f $1 ]; then
  ABSDIR=$(cd $(dirname $1); pwd -P)
else
  ABSDIR=$(cd $(dirname $0); pwd -P)
fi

shift
cd ${ABSDIR}
if [ "" != "${FLOCK}" ]; then
  ${FLOCK} ${ABSDIR} bash -c "$*"
else
  eval "$*"
fi