julia(1) high-level, high-performance dynamic programming language for technical computing


julia [option] [program] [args..]


Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library. The library, largely written in Julia itself, also integrates mature, best-of-breed C and Fortran libraries for linear algebra, random number generation, signal processing, and string processing. In addition, the Julia developer community is contributing a number of external packages through Julia's built-in package manager at a rapid pace. Julia programs are organized around multiple dispatch; by defining functions and overloading them for different combinations of argument types, which can also be user-defined. For a more in-depth discussion of the rationale and advantages of Julia over other systems, please see the online manual: http://docs.julialang.org/en/latest/manual/

If a Julia source file is given as a program (optionally followed by
 arguments in args) Julia will execute the program and exit.


-v, --version
Display version information

-h, --help
Print help message

-q, --quiet
Quiet startup without banner

-H, --home <dir>
Set location of julia executable

-e, --eval <expr>
Evaluate <expr>

-E, --print <expr>
Evaluate and show <expr>

-P, --post-boot <expr>
Evaluate <expr>, but don't disable interactive mode

-L, --load <file>
Load <file> immediately on all processors

-J, --sysimage <file>
Start up with the given system image file

-C, --cpu-target <target>
Limit usage of cpu features up to <target>

-p, --procs <n>
Run n local processes

--machinefile <file>
Run processes on hosts listed in <file>

Force isinteractive() to be true

Enable or disable color text

Load or save history

Load ~/.juliarc.jl

Enable or disable compiler, or request exhaustive compilation

--code-coverage={none|user|all}, --code-coverage
Count executions of source lines (omitting setting is equivalent to 'user')

--track-allocation={none|user|all}, --track-allocation
Count bytes allocated by each source line

-O, --optimize
Run time-intensive code optimizations

Emit bounds checks always or never (ignoring declarations)

Dump bitcode for the system image (used with --build)

Enable or disable syntax and method deprecation warnings ('error' turns warnings into errors)

Control whether inlining is permitted (overrides functions declared as @inline)

Always use IEEE semantics for math (ignoring declarations), or adhere to declarations in source code


Per user startup file.


System-wide startup file.


Please report any bugs using the GitHub issue tracker: https://github.com/julialang/julia/issues?state=open