NAME

envml - run a command in an environment setting up by Modules

SYNOPSIS

envml [MODULE_ACTION]... [--] COMMAND [ARG]...

DESCRIPTION

The envml command configures the environment using specified Environment Modules actions and then given command.

This is useful for running a command in a modified environment without permanently altering the current shell session.

envml interprets its first arguments as module actions, then switches to command execution after either encountering -- or determining that the remaining arguments form the actual command to run.

MODULE_ACTION FORMAT

Each module action argument can be one of the following forms:

Multiple MODULE_ACTIONs can be passed in a single argument using the colon (:) separator. The ampersand (&) is used to specify multiple modules in a single action.

COMMAND EXECUTION

Everything following the -- separator is treated as the command to execute in the modified environment.

If no -- separator is provided, envml assumes the first argument is a MODULE_ACTION and the remaining arguments form the command to execute.

OPTIONS

EXAMPLES

Restore default module collection then run command arg1 arg2:

envml restore command arg1 arg2

Purge all modules, then load mod1 and mod2, and run the command:

envml purge:mod1:mod2 command arg1 arg2

Use the -- separator to avoid ambiguity:

envml restore load=mod1&mod2 -- command arg1 arg2

EXIT STATUS

The envml command returns the exit status of the executed command or 1 if module action fails.

DIAGNOSTICS

If the module command is not available in the shell (i.e., not a shell function), envml will print an error and exit.

SEE ALSO

module, ml, modulefile

COPYRIGHT

1996-2025, Modules Contributors