macos gnu coreutils wrappers

activate.sh

PATH=~/Applications/gnu-coreutils-wrappers/bin:$PATH

runner.sh

#!/bin/bash

ORIG_BINS_DIR=$(echo /usr/local/Cellar/coreutils/*/bin)
BIN_NAME=$(/usr/bin/basename "$0")

exec $ORIG_BINS_DIR/g$BIN_NAME "$@"

update.sh

#!/bin/bash

# update gnu utils
ORIG_BINS_DIR=$(echo /usr/local/Cellar/coreutils/*/bin)
NEW_BIN_DIR=$(dirname "$0")/bin

rm -f "$NEW_BIN_DIR"/*
for i in $ORIG_BINS_DIR/g*;do
    ln -sf ../runner.sh $NEW_BIN_DIR/${i#$ORIG_BINS_DIR/g}
done

# update gnu sed
ln -sf /usr/local/bin/gsed $NEW_BIN_DIR/sed