uci-docker-build/install

#!/bin/bash
builder=$(dirname "$(realpath "$BASH_SOURCE")")
target=$1
[[ $# -eq 2 ]] && target=$1/$2
target=${target:-/opt/bin/udbuild}
cmd=$(basename $target)
parent=$(dirname $target)
echo NOTE: the uci build script can be called directly at $builder
# echo "$PATH --- $parent"
declare -a a="(${PATH//:/ })"
for i in ${a[*]}; do [[ $i == $parent ]] && found=true; done
if [[ $found ]]; then 
    echo creating a link \'$cmd\' in \'$parent\' to \'$builder\' 
    if [[ -f $target ]]; then
        echo "$target already exists do you want to overwrite? (y/n) "
        read -e ans
        [[ ! $ans == "y" ]] && exit 1
     fi
    if ln -fns $builder/build $target; then
        [[ ! $(command -v $cmd) ]] && echo FATAL: link failed $cmd not found in path \
        || echo install success:  try \'$cmd -h\' now 
    else 
        echo Error creating link
        echo if \': Permission denied\' 'then' run \'sudo ./install\'
    fi
  else
    echo "Install failed: $parent not in current path"
    echo $PATH
    echo "link to script not created. your install options are:"
    echo "1. add $parent to your PATH" 
    echo "2. rerun this script using a directory in the system path (e.g ./install /usr/bin build)"
    echo "3. add the following export somewhere in your shell (e.g. ~/.bashrc)"
    echo "        export UDBUILD=$builder/build"
    echo '        and then use $UDBUILD to invoke the build script' 
    echo '        ( e.g  $UDBUILD -e Smybuild.env)'
fi