man.bsd.lv manual page server

DESCRIPTION

Some shells may provide a builtin printenv command which is similar or identical to this utility. Consult the builtin(1) manual page.

The env utility executes utility after modifying the environment as specified on the command line. The option name=value specifies an environment variable, name, with a value of value.

The options are as follows:

-i

Execute the utility with only those environment values specified. The environment inherited by env is ignored completely.

-

Identical to the -i option, available for backward compatibility.

If no utility is specified, env prints out the names and values of the variables in the environment, with one name/value pair per line.

The env utility is sometimes useful with the “#!” construct (see execve(2)). The only difference between “#!/usr/local/bin/foo” and “#!/usr/bin/env /usr/local/bin/foo” is that the latter works even if /usr/local/bin/foo is itself interpreted. Using env this way also allows one to reference foo without the path, as well as set up the environment as desired.