The env utility obtains the current environment, modifies it according to its arguments, then invokes the utility named by the utility operand with the modified environment.

Optional arguments are passed to utility. If no utility operand is specified, the resulting environment is written to the standard output, with one name=value pair per line.

/usr/bin

/usr/xpg4/bin

The following options are supported:

-i | -

Ignores the environment that would otherwise be inherited from the current shell. Restricts the environment for utility to that specified by the arguments.

The following operands are supported:

name=value

Arguments of the form name=value modify the execution environment, and are placed into the inherited environment before utility is invoked.

utility

The name of the utility to be invoked. If utility names any of the special shell built-in utilities, the results are undefined.

arg

A string to pass as an argument for the invoked utility.

See environ(5) for descriptions of the following environment variables that affect the execution of env: LC_CTYPE, LC_MESSAGES, and NLSPATH.

If utility is invoked, the exit status of env is the exit status of utility; otherwise, the env utility is with one of the following values:

0

Successful completion.

1-125

An error occurred.

126

utility was found but could not be invoked.

127

utility could not be found.

See attributes(5) for descriptions of the following attributes:

/usr/bin

/usr/xpg4/bin

ksh(1), sh(1), exec(2), profile(4), attributes(5), environ(5), XPG4(5)