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 ln -ns $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 $parent not in current path
 echo $PATH
 echo link to script not created
 echo "add the following export somewhere in your shell (e.g. ~/.bashrc)"
 echo "export UDBUILD=$builder/build"
 echo 'and then use $UDBUILD to invoke the build script ( e.g  $UDBUILD -e mybuild.env)'
 echo "or rerun this script using a directory in the system path (e.g ./install /usr/bin build)"
 fi