using Pkg
using Random

  

  function packages_get()

    v=Vector{String}()

    packindex=[string('/',c) for c in 'A':'Z']

    for (root, D,f) in walkdir("/home/user/.julia/registries/General")
       if root[end-1:end] in packindex
        if !isempty(D) && D != "Vega"
          append!(v,D)
        end
      end
    end
    unique!(v)      # normally not necessary
    sort!(v)
    filter!(s->s!="julia",v)     #eliminate 'julia' package
    return(v)
  end


A=packages_get() # available packages
n=length(A)
B=keys(Pkg.installed()) # installed packages
m=length(B)
C=setdiff(A,B) # new, not yet installed packages
D=Vector{String}() # new installed packages
k=length(C)
err=0
pos=0
shuffle!(C)
println("packages to be installed:      ", k)
i = 0
for c in C
 global i,err,pos,D
  i += 1
  try
    Pkg.add(c);
    pos += 1
    push!(D,c)
    println("## ", i ," OK: ",c)
  catch
    err += 1
    println("## ", i ," Failure: ",c)
  end
end

println("###################################")
println("############ Summary ##############")
println("###################################")
println("                               ")
println("all packages:                  ",n)
println("already installed packages:    ",m)
println("Packages to be installed:      ",k)
println("failure packages:              ",err)
println("new installed packages:        ",pos)
println("                               ")
for d in D
  println(d)
end