Reserved Variables

Special variables reserved by Murex

In Murex, there are five different classes of variables:

1. Local variables (scope limited to a function et al)
2. Module variables (scoped to a module)
3. Global variables (available to every function within Murex but not shared with processes outside of the Murex's runtime)
4. Environmental variables (available to every function and process -- internal and external to Murex)
5. Reserved variables

Reserved variables are data that are available to any code running within Murex and exposed as a variable.

Because reserved variables are dynamic properties of the runtime environment, they can only be queried and not set:

» set SELF="foobar"
Error in `set` (0,1): cannot set a reserved variable: SELF

See Also

• Modules and Packages: An introduction to Murex modules and packages
• Numeric (str): Variables who's name is a positive integer, eg 0, 1, 2, 3 and above
• Pipeline: Overview of what a "pipeline" is
• Variable and Config Scoping: How scoping works within Murex
• ARGV (json): Array of the command name and parameters within a given scope
• COLUMNS (int): Character width of terminal
• HOSTNAME (str): Hostname of the current machine
• MUREX_ARGV (json): Array of the command name and parameters passed to the current shell
• SELF (json): Meta information about the running scope.
• SHELL (str): Path of current shell
• export: Define an environmental variable and set it's value
• global: Define a global variable and set it's value
• set: Define a local variable and set it's value

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This document was generated from gen/user-guide/reserved_vars_doc.yaml.