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linked to the sudo man page and updated the snippet from it

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edited Aug 2, 2014 at 0:31

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You can use the SUDO_USERSUDO_USER variable:

sudo bash -c 'echo $SUDO_USER'

sudo bash -c 'echo $SUDO_USER'

From the sudosudo man page:

if sudo is run by root andsudo utilizes the SUDO_USER following environment variable is set, sudo will use this value to determine whovariables. The security policy has control over the actual user iscontent of the command's environment. This can [...]

SUDO_UID be used by a userSet to log commands throughthe user ID of the user who invoked sudo even when a root shell.

SUDO_USER has beenSet to the login name of the user who invoked sudo.

You can use the SUDO_USER variable:

sudo bash -c 'echo $SUDO_USER'

From the sudo man page:

if sudo is run by root and the SUDO_USER environment variable is set, sudo will use this value to determine who the actual user is. This can be used by a user to log commands through sudo even when a root shell has been invoked.

You can use the SUDO_USER variable:

sudo bash -c 'echo $SUDO_USER'

From the sudo man page:

sudo utilizes the following environment variables. The security policy has control over the actual content of the command's environment. [...]

SUDO_UID Set to the user ID of the user who invoked sudo.

SUDO_USER Set to the login name of the user who invoked sudo.

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answered Nov 30, 2009 at 13:41

Kyle Brandt

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You can use the SUDO_USER variable:

sudo bash -c 'echo $SUDO_USER'

From the sudo man page:

if sudo is run by root and the SUDO_USER environment variable is set, sudo will use this value to determine who the actual user is. This can be used by a user to log commands through sudo even when a root shell has been invoked.