Code for article 'Shells and Scripting'

relocate.fish

set --local bin_index (contains --index /usr/bin $PATH)
set --local local_bin_index (contains --index /usr/local/bin $PATH)

if test $local_bin_index -gt $bin_index
    set --erase $PATH[$local_bin_index]

    set --local local_path ''
    if test (math $bin_index - 1) -gt 0
        set local_path $PATH[1..(math $bin_index - 1)]
    end

    set local_path $local_path /usr/local/bin
    set local_path $local_path $PATH[$bin_index..-1]

    set --global --export PATH $local_path
end

relocate.rb

path = ENV['PATH'].split(/:/)

bin_index = path.find_index('/usr/bin')
local_bin_index = path.find_index('/usr/local/bin')

if local_bin_index > bin_index
  path.delete_at(local_bin_index)
  path.insert(bin_index, '/usr/local/bin')
  
  ENV['PATH'] = path
end