sudo: user: command not found

Same there

I tried sudo user2 from user1 account

and i tried sudo user1 from user2 account

same problem

I did repair disk permissions earlier today.. now i tried to do it again and it gave me same errors as before and one of them was not repaired:

Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired.

How do i check drive health?

which sudo returns: /usr/bin/sudo

i used First Aid to verify disk permissions 3 times.. repaired them, but it keeps giving me the same errors every time i hit Verify Disk Permissions..

List of errors:

Permissions differ on "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jconsole.ja r", should be lrwxr-xr-x , they are lrw-r--r-- .
User differs on "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib", should be 0, user is 95.
User differs on "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries", should be 0, user is 95.
Permissions differ on "System/Library/Java/Support/Deploy.bundle/Contents/Home/lib/security/cacerts", should be lrwxr-xr-x , they are lrw-r--r-- .
Permissions differ on "System/Library/Java/Support/Deploy.bundle/Contents/Resources/Java/deploy.jar", should be lrwxr-xr-x , they are lrw-r--r-- .
Permissions differ on "System/Library/Java/Support/Deploy.bundle/Contents/Resources/JavaPluginCocoa.b undle/Contents/Resources/Java/deploy.jar", should be lrwxr-xr-x , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Classes/jconsole.jar ", should be -rw-r--r-- , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/A/Resources/Deploy.bundle/ Contents/Home/lib/security/cacerts", should be -rw-r--r-- , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/A/Resources/Deploy.bundle/ Contents/Resources/Java/deploy.jar", should be -rw-r--r-- , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/A/Resources/Deploy.bundle/ Contents/Resources/Java/libdeploy.jnilib", should be -rwxr-xr-x , they are lrwxr-xr-x .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/A/Resources/Deploy.bundle/ Contents/Resources/JavaPluginCocoa.bundle/Contents/Resources/Java/deploy.jar", should be lrwxr-xr-x , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Resources/JavaPlugin Cocoa.bundle/Contents/Resources/Java/deploy.jar", should be -rw-r--r-- , they are lrw-r--r-- .
Permissions differ on "System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Resources/JavaPlugin Cocoa.bundle/Contents/Resources/Java/libdeploy.jnilib", should be -rwxr-xr-x , they are lrwxr-xr-x .
Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired.

Permissions verification complete

Are these pretty bad errors? Are these causing sudo not to work?

SVN client Cornerstone few days ago

can't think of anything else that i have installed lately.

Not the correct answer for the whole disscussion.. just wanted to edit reply, but accidentally hit correct answer!

Remembered that i installed FileZilla as well recently

That makes 2 apps i've installed recently:

Cornerstone and FileZilla

Can't afford Time Capsule :| i was suggested that doing backup on the same drive was not a good option so i don't have a backup.

no the error is -

sudo: disk: command not found

like i mentioned before when i type sude disk - DISK is a user on my iMac.. it's not meant drive/disk.. just user

And it does seem i have another problem now.. i can't repair disk permissions

well i meant user anyway.. lets say i typed sudo steve and got sudo: steve: command not found

with sudo -U steve i get this:

baranka-iMac:~ baranka$ sudo -U steve

sudo: the `-U' option may only be used with the `-l' option

usage: sudo [-n] -h | -K | -k | -L | -V | -v

usage: sudo -l[l] [-AnS] [-g groupname|#gid] [-U username] [-u username|#uid]

[-g groupname|#gid] [command]

usage: sudo [-AbEHnPS] [-C fd] [-g groupname|#gid] [-p prompt] [-u

username|#uid] [-g groupname|#gid] [VAR=value] [-i|-s] [<command>]

usage: sudo -e [-AnS] [-C fd] [-g groupname|#gid] [-p prompt] [-u

username|#uid] file ...