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Sudo for HPUX


HP-UX Administration

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Like Solaris HP-UX implements RBAC.  RBAC is an alternative to the traditional "all-or-nothing" root user model, which grants permissions to the root user for all operations, and denies permissions to non-root users for certain operations. HP-UX RBAC allows you to distribute administrative responsibilities by creating roles with appropriate authorizations and assigning them to non-root users and groups. See HP-UX System Administrator's Guide: Security Management

That means that sudo functionality can be implemented natively in HP-UX using RBAC and you do not need to install additional package.

The HP-UX RBAC main components are very close to the original Solaris implmentation:

Still sudo has such an entrenched role that people seldom do this. Most sysadmin who administer several different flavors of Unix tend to install classic sudo implementation.

Go to and search for sudo. ixSudo one of the bundles available as part of the Internet Express package... just select the one for the version of HP-UX you are running and you are good to go. he only slightly weird thing about it that the sudoers file is actually stored in /opt/iexpress/sudo/etc. Create a symlink to  /etc/sudoers to access the file from usual location.

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[Feb 17, 2011] Sudoers file

IT Resource Center forums

Author Subject: Sudoers file ozas Jan 21, 2011 15:20:13 GMT


Please just a quick one. Does any one know how I can restrict users from being able to switch to root in sudoers file?? Presently the users are defined in the sudoers file and could switch to another user without password but I do not want them to be able to switch to root.

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Patrick Wallek Jan 21, 2011 15:35:32 GMT Unassigned

Use a command alias like this:

Cmnd_Alias SU=!/usr/bin/su ‚?�, !/usr/bin/su *root*

Add this to each user and they should not be able to su to root.

ozas Jan 21, 2011 16:01:41 GMT N/A: Question Author

I have tried that before it did not work. See below my sudoers file, maybe I need to change anything.

This is the sudoers file:

# User_Alias

User_Alias WAS = g343ahe,m017ahe,y073ahe,y072ahe,h234ahe,r019ahe,r032ahe

User_Alias SUPPORT = d060ahe,h070ahe,s029ahe

#User privilege specification root ALL=(ALL) ALL SUPPORT ALL=(ALL) ALL SUPPORT ALL=(ALL) NOPASSWD: ALL WAS ALL=(ALL) NOPASSWD: ALL WAS ALL=/usr/bin/su - wasdevadmin,/bin/su - wasdevadmin

What I want is that the users in WAS should not be ble to switch to root, but they should be able to switch to user "wasdevadmin". Only users in SUPPORT should be able to switch to root.

Jeff Traigle, CSE - HP-UX Jan 21, 2011 16:14:48 GMT Unassigned

> WAS ALL=(ALL) NOPASSWD: ALL > WAS ALL=/usr/bin/su - wasdevadmin,/bin/su - wasdevadmin

The first line is saying to allow the WAS users to run any command on any host as any user. The second line is redundantly saying to allow WAS users to run the su commands specified on all hosts as root. You don't have anything restricting them from running su to root as a previous post stated to do.

Patrick Wallek Jan 21, 2011 16:15:34 GMT Unassigned

What about the following:

WAS ALL=!/usr/bin/su -, !/usr/bin/su *root*, /usr/bin/su - wasdevadmin,/bin/su - wasdevadmin

You also have 2 lines for WAS. I don't remember which will take priority, but the 2 may be conflicting.

What happens if you comment out the first WAS line?

ofure Jan 21, 2011 17:18:22 GMT Unassigned

Thanks for your prompt reply. This has partly resolved the issue. At least users in WAS cannot su to root again but now the WAS cannot switch to wasdevadmin user. I want a situation where they can switch to wasdevadmin without been prompted for a password.


Patrick Wallek Jan 21, 2011 17:52:13 GMT Unassigned

What does your sudoers file look like now?

Matti Kurkela Jan 21, 2011 21:06:34 GMT Unassigned

> I want a situation where they [= the users in sudo group WAS] can switch to wasdevadmin without been prompted for a password.

You need this line in your sudoers file:

WAS ALL=(wasdevadmin) NOPASSWD: ALL

Then tell your users to use the sudo command like this:

sudo -H -u wasdevadmin -i (to run a shell as wasdevadmin; equivalent to "sudo su - wasdevadmin")

...or like this:

sudo -H -u wasdevadmin <command> (to run <command> as wasdevadmin and then continue the session as themselves)


ofure Jan 22, 2011 11:41:47 GMT Unassigned

Below is how my sudoers file now look:

User_Alias WAS = g343ahe,m017ahe,y073ahe,y072ahe,h234ahe,r019ahe

User_Alias SUPPORT = d060ahe,h070ahe,s029ahe #User privilege specification root ALL=(ALL) ALL SUPPORT ALL=(ALL) ALL SUPPORT ALL=(ALL) NOPASSWD: ALL WAS ALL=!/usr/bin/su -, !/usr/bin/su *root*, /usr/bin/su - wasdevadmin,/bin/su - wasdevadmin WAS ALL=(wasdevadmin) NOPASSWD: ALL

But the users in WAS still cannot switch to wasdevadmin account. I want the users in WAS to be able to do this without prompting for password. Thanks. Regards.

INH Jan 23, 2011 04:54:27 GMT Unassigned

Remove the user name you dont wantthem to do sudo to root in sudoers file

if you have to grant specfic access you can grant in sudoers file for required users. by defining user alis, command alias and host alias for those users

Regards, INH

ofure Jan 24, 2011 11:13:23 GMT Unassigned

;The challenge I have now is that I want the users in WAS to be able to switch to the account wasdevadmin without prompting for password. I have tried this below but did not work.

WAS ALL=(wasdevadmin) NOPASSWD: ALL


Matti Kurkela Jan 24, 2011 15:49:55 GMT Unassigned

> WAS ALL=(wasdevadmin) NOPASSWD: ALL

When you use this sudoers line, your user *must* use "sudo -u wasdevadmin -i" or similar sudo command to become wasdevadmin. The "-H" option is optional, but probably in line with the user's expectations.

With this sudoers line, a command like "sudo su wasdevadmin" or "sudo su - wasdevadmin" will *not* work. This is because these commands first use sudo to become root, then use su to become the target user. Sudo can do it in one step - but it requires that the user uses the correct syntax.


ofure Feb 17, 2011 10:37:51 GMT Unassigned

Hi All,

When I type this: sudo -u wasdevadmin -i it works without prompting me for password but it is a long command. I want to be able to type su - wasdevadmin and for it to call up sudo -u wasdevadmin -i

Presently, I have this configuration:

#cd /bin # ls -l su* root root 45 Feb 16 17:17 su root root 28336 Oct 30 2008 su.original

# cat su sudo su.original $@

So presently when I type su -, it call up sudo su.original, which works fine for my switching to root access. How can I also have: "sudo -u wasdevadmin -i" equal to "su - wasdevadmin"


ofure Feb 17, 2011 12:24:30 GMT Unassigned

I have resolved this by creating an alias for wasdevadmin.

Thanks all.

Tags: Sudo, Sudo for HPUX

[Sep 10, 2010] IT Resource Center forums - sudo for HPUX

Jun 3, 2008


My HP-UX (11.23) didn't come with sudo on it.
Is there a reliable source, which I can download it from?

Ivan Krastev

Go to and search for sudo. ixSudo one of the bundles available as part of the Internet Express package... just select the one for the OS revision you're running.


Download ixSudo - part of Internet Express package -


1. You download only the portions of the Internet Express package that you want. If you just want sudo, then just download ixSudo from the Internet Express download page.

2. Configuration is the same. It's still sudo. HP just built it and packaged it. The only slightly weird thing about it that the sudoers file is actually stored in /opt/iexpress/sudo/etc. There is a symlink, /etc/sudoers, that points to it.



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