use ENV["NOSUDO"]=true to prevent sudo -V check

[JonathanAnderson]

This will help prevent my sysadmin from yelling at me about the sudo requests I keep making when installing packages.

[bjarthur]

the -V option just prints version info. why would your sysadmin care about that?

from the man page:

       -V, --version
                   Print the sudo version string as well as the version string of the
                   security policy plugin and any I/O plugins.  If the invoking user is
                   already root the -V option will display the arguments passed to
                   configure when sudo was built and plugins may display more verbose
                   information such as default options.

$ sudo -V
Sudo version 1.8.17p1
Sudoers policy plugin version 1.8.17p1
Sudoers file grammar version 45
Sudoers I/O plugin version 1.8.17p1

[JonathanAnderson]

Our cluster is managed with Bright Computing's Cluster Manager, and I think the notification on non sudoers trying to sudo is a default configuration out of the box. On our cluster, every time someone types sudo without permission it sends an email to the entire support team with the subject line `*** SECURITY information for hostname ***` command that was typed even if the command was only `sudo -V`. This causes my sysadmin to walk to my office and talk to me. Additionally sudo will timeout if it is not successful and it will cause my installs to proceed slowly since failed sudo's have a timeout between them. Since I can tell computer that `sudo -V` wont work anyway, what's wrong with avoiding all the above hassle for the cost of an added option. If there are other ways we can avoid calling `sudo`, those implementations would be acceptable to me too.

…

On Sat, Dec 9, 2017 at 6:13 PM, Ben Arthur ***@***.***> wrote: the -V option just prints version info. why would your sysadmin care about that? from the man page: -V, --version Print the sudo version string as well as the version string of the security policy plugin and any I/O plugins. If the invoking user is already root the -V option will display the arguments passed to configure when sudo was built and plugins may display more verbose information such as default options. $ sudo -V Sudo version 1.8.17p1 Sudoers policy plugin version 1.8.17p1 Sudoers file grammar version 45 Sudoers I/O plugin version 1.8.17p1 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#325 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA9_0BdoOV_XhincpSvpH5JnNrDwYez5ks5s-yIqgaJpZM4Op6I1> .

-- Jon Anderson

[JonathanAnderson]

after reading #330 maybe this should be renamed to has_sudo_permission or sudo_command_exists to better clarify what the intended goal is.

[JonathanAnderson]

Again the reasons this is frustrating is twofold.

1. currently, when BinDeps runs sudo -V, my prompt sits there waiting me to type the sudo password and when I get back to my terminal, my install of a package hasn't happened yet...

2. at my company, when a non sudo enabled user tries to use sudo, this emails our entire company as a security precaution. I want to encourage Julia adoption and no one wants to be spamming everyone whenever they install a package.

[cmcaine]

This is also frustrating for me for similar reasons. Is there something that I could do to get this merged?

[lobingera]

@cmcaine I can take a look when i'm home, but LGTM

[cmcaine]

Thank you!