How to install image_optim on Ubuntu?

[confile]

According to the readme I did:

sudo apt-get install -y advancecomp gifsicle jhead jpegoptim libjpeg-progs optipng pngcrush pngquant

Then I tried: image_optim but I get:

-bash: image_optim: command not found

1. Is there anything else I have to do on ubuntu?
2. Do I have to install additional tools like pngout on ubuntu? If yes how do I set the path for them on ubuntu?

@toy You help is appreciated.

[toy]

gem install image_optim image_optim_pack

You man need to prefix the command with sudo.

[confile]

Why do I have to use this:

sudo apt-get install -y advancecomp gifsicle jhead jpegoptim libjpeg-progs optipng pngcrush pngquant

[toy]

There is a section Binaries pack just before Linux - Debian/Ubuntu, so the easiest way to install nearly all tolls is to use image_optim_pack, but all of them can be also installed manually. I've already created #98 to make readme clearer, like telling in every installing section to first check image_optim_pack. I'm near the point when I will have time for this.

[confile]

Is there any way to skip png optimization?

[toy]

Depends on usage: using command line tool or ImageOptim interface you can pass only non png images, otherwise disabling all png optimizers (you can check by running image_optim --info).

[confile]

Thanks