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The following is a complete list of command-line switches available when launching julia:
| Switch | Description |
|---|---|
-v, —version | Display version information |
-h, —help | Print command-line options (this message). |
—project[={<dir>|@.}] | Set <dir> as the home project/environment. The default @. option will search through parent directories until a Project.toml or JuliaProject.toml file is found. |
-J, —sysimage <file> | Start up with the given system image file |
-H, —home <dir> | Set location of julia executable |
—startup-file={yes|no} | Load ~/.julia/config/startup.jl |
—handle-signals={yes|no} | Enable or disable Julia’s default signal handlers |
—sysimage-native-code={yes|no} | Use native code from system image if available |
—compiled-modules={yes|no} | Enable or disable incremental precompilation of modules |
-e, —eval <expr> | Evaluate <expr> |
-E, —print <expr> | Evaluate <expr> and display the result |
-L, —load <file> | Load <file> immediately on all processors |
-t, —threads {N|auto} | Enable N threads; auto currently sets N to the number of local CPU threads but this might change in the future |
-p, —procs {N|auto} | Integer value N launches N additional local worker processes; auto launches as many workers as the number of local CPU threads (logical cores) |
—machine-file <file> | Run processes on hosts listed in <file> |
-i | Interactive mode; REPL runs and isinteractive() is true |
-q, —quiet | Quiet startup: no banner, suppress REPL warnings |
—banner={yes|no|auto} | Enable or disable startup banner |
—color={yes|no|auto} | Enable or disable color text |
—history-file={yes|no} | Load or save history |
—depwarn={yes|no|error} | Enable or disable syntax and method deprecation warnings (error turns warnings into errors) |
—warn-overwrite={yes|no} | Enable or disable method overwrite warnings |
-C, —cpu-target <target> | Limit usage of CPU features up to <target>; set to help to see the available options |
-O, —optimize={0,1,2,3} | Set the optimization level (default level is 2 if unspecified or 3 if used without a level) |
—min-optlevel={0,1,2,3} | Set the lower bound on per-module optimization (default is 0) |
-g, -g <level> | Enable / Set the level of debug info generation (default level is 1 if unspecified or 2 if used without a level) |
—inline={yes|no} | Control whether inlining is permitted, including overriding @inline declarations |
—check-bounds={yes|no|auto} | Emit bounds checks always, never, or respect @inbounds declarations |
—math-mode={ieee,fast} | Disallow or enable unsafe floating point optimizations (overrides @fastmath declaration) |
—code-coverage={none|user|all} | Count executions of source lines |
—code-coverage | equivalent to —code-coverage=user |
—track-allocation={none|user|all} | Count bytes allocated by each source line |
—track-allocation | equivalent to —track-allocation=user |
Julia 1.1
In Julia 1.0, the default --project=@. option did not search up from the root directory of a Git repository for the Project.toml file. From Julia 1.1 forward, it does.
