bash_helpers_functions - env-isolate, bash-isolate, fhs-extend

bash_env_isolate.sh

# Use this to run things in a pristine environment.
alias env-isolate='env -i HOME=$HOME DISPLAY=$DISPLAY SHELL=$SHELL TERM=$TERM USER=$USER PATH=/usr/sbin:/usr/bin:/bin'
alias bash-isolate='env-isolate bash --norc'

bash_fhs_extend.sh

export-prepend () 
{ 
    eval "export $1=\"$2:\$$1\""
}

fhs-extend () 
{ 
    local python_version=3;
    local prefix=${1%/};
    export-prepend PYTHONPATH $prefix/lib:$prefix/lib/python${python_version}/dist-packages:$prefix/lib/python${python_version}/site-packages;
    export-prepend PATH $prefix/bin;
    export-prepend LD_LIBRARY_PATH $prefix/lib;
    export-prepend PKG_CONFIG_PATH $prefix/lib/pkgconfig:$prefix/share/pkgconfig;
    echo "[ FHS Environment extended: ${prefix} ]";
    export-prepend MANPATH $prefix/share/man
}