I finally figured out what the actual problem is.
The single backslash was getting interpreted in a strange manner; i.e. \s
came across as whitespace when rendered. I couldn't see this until I
enabled debug mode in bash:
set -x
I had to escape the escape... so this now works in all versions:
dpkg --get-selections | egrep 'vim\\s+install'
On Tuesday, March 5, 2019 at 4:37:02 AM UTC-8, Salty Vagrant wrote:
>
> FWIW
>
> I just ran through the process of creating a VM using only your sample
> Vagrantfile and following the steps you describe in your email.
>
> In all test cases the script, irrespective of context, returns NOT FOUND.
>
> Furthermore, manual checks on the machine, as created by this example
> Vagrantfile, show that vim is not installed.
>
> Unsurprisingly, apt install vim and rerunning the tests returns a
> consistent FOUND.
>
> All of which suggests that you have something in your real Vagrantfile
> that is installing vim after the provision script does its test (and so
> your subsequent direct test shows vim installed. (Maybe vim is being
> installed as a dependency somewhere—assuming you’re not installing it
> directly.)
>
> On 3 Mar 2019, at 1:13, shaun smiley wrote:
>
> I have a strange issue where the bash code I put into Vagrantfile and run
> with 'provision' gives different output than if I copy/paste the exact same
> code into the shell of the vagrant machine.
>
> Here's a stripped down version of my Vagrantfile I've gotten to prove this
> strange issue.
>
> # -*- mode: ruby -*-
> # vi: set ft=ruby :
>
> $test_apt = <<-SCRIPT
> #!/usr/bin/env bash
>
> dpkg_find() {
> pkgname="$1"
> echo "in dpkg_find, pkgname=${pkgname}"
> dpkg --get-selections | egrep "${pkgname}"'\s+install' && {
> echo "FOUND"
> } || {
> echo "NOT_FOUND"
> }
> }
>
> dpkg_find vim
> SCRIPT
>
> Vagrant.configure("2") do |config|
> config.vm.box = "peru/ubuntu-18.04-desktop-amd64"
> config.vm.box_version = "20190222.03"
> config.vm.network :private_network, ip: '192.168.85.102'
> config.vm.provision "shell", inline: $test_apt
> end
>
>
> $ vagrant provision
> ==> default: Running provisioner: shell...
> default: Running: inline script
> default: in dpkg_find, pkgname=vim
> default: NOT_FOUND
>
>
>
>
>
> I can copy paste the dpkg_find function and its call line and get
> different output!
>
> $ vagrant ssh
>
> vagrant@linux:~$ sudo su -
> root@linux:~# dpkg_find() {
> pkgname="$1"
> echo "in dpkg_find, pkgname=${pkgname}"
> dpkg --get-selections | egrep "${pkgname}"'\s+install' && {
> echo "FOUND"
> } || {
> echo "NOT_FOUND"
> }
> }
>
>
>
> root@linux:~# dpkg_find vim
> in dpkg_find, pkgname=vim
> vim install
> FOUND
>
>
>
> What is going on here?
>
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