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JULIA(1) General Commands Manual JULIA(1) NAME julia - a high-level, high-performance dynamic programming language for technical computing SYNOPSIS julia [OPTIONS...] -- [PROGRAMMFILE] [ARGS...] If a Julia source file is given as a PROGRAMFILE (optionally followed by arguments in ARGS) Julia will execute the program and exit. DESCRIPTION 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 com- piler, distributed parallel execution, numerical accuracy, and an ex- tensive mathematical function library. The library, largely written in Julia itself, also integrates mature, best-of-breed C and Fortran li- braries for linear algebra, random number generation, signal process- ing, 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 dif- ferent 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: https://docs.ju- lialang.org COMMAND-LINE OPTIONS -v, --version Display version information -h, --help Print help message --help-hidden Print uncommon options not shown by `-h` --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_DEPOT_PATH/config/startup.jl`; if `JULIA_DEPOT_PATH` environment variable is unset, 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> Enable n threads; "auto" tries to infer a useful default number of threads to use but the exact behavior might change in the fu- ture. Currently, "auto" uses the number of CPUs assigned to this julia process based on the OS-specific affinity assignment interface, if supported (Linux and Windows). If this is not sup- ported (macOS) or process affinity is not configured, it uses the number of CPU threads. --gcthreads=N[,M] Use N threads for the mark phase of GC and M (0 or 1) threads for the concurrent sweeping phase of GC. N is set to half of the number of compute threads and M is set to 0 if unspecified. -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 (`er- ror` turns warnings into errors) --warn-overwrite={yes|no*} Enable or disable method overwrite warnings --warn-scope={yes*|no} Enable or disable warning for ambiguous top-level scope -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 (level 3 if `-O` is used without a level) --min-optlevel={0*,1,2,3} Set a lower bound on the optimization level -g {0,1*,2} Set the level of debug info generation (level 2 if `-g` is used without a level) --inline={yes*|no} Control whether inlining is permitted, including overriding @in- line declarations --check-bounds={yes|no|auto*} Emit bounds checks always, never, or respect @inbounds declara- tions --math-mode={ieee|user} Disallow or enable unsafe floating point optimizations (over- rides @fastmath declaration) --code-coverage[={none*|user|all}] Count executions of source lines (omitting setting is equivalent to `user`) --code-coverage=@<path> Count executions of source lines in a file or files under a given directory. A `@` must be placed before the path to indi- cate this option. A `@` with no path will track the current di- rectory. --code-coverage=tracefile.info Append coverage information to the LCOV tracefile (filename supports format tokens) --track-allocation[={none*|user|all}] Count bytes allocated by each source line (omitting setting is equivalent to `user`) --track-allocation=@<path> Count bytes allocated by each source line in a file or files un- der a given directory. A `@` must be placed before the path to indicate this option. A `@` with no path will track the current directory. --bug-report=KIND Launch a bug report session. It can be used to start a REPL, run a script, or evaluate expressions. It first tries to use BugRe- porting.jl installed in current environment and fallbacks to the latest compatible BugReporting.jl if not. For more information, see --bug-report=help. --heap-size-hint=<size> Forces garbage collection if memory usage is higher than that value. The memory hint might be specified in megabytes (500M) or gigabytes (1.5G) --compile={yes*|no|all|min} Enable or disable JIT compiler, or request exhaustive or minimal compilation --output-o <name> Generate an object file (including system image data) --output-ji <name> Generate a system image data file (.ji) --strip-metadata Remove docstrings and source location info from system image --strip-ir Remove IR (intermediate representation) of compiled functions --output-unopt-bc <name> Generate unoptimized LLVM bitcode (.bc) --output-bc <name> Generate LLVM bitcode (.bc) --output-asm <name> Generate an assembly file (.s) --output-incremental={yes|no*} Generate an incremental output file (rather than complete) --trace-compile={stderr,name} Print precompile statements for methods compiled during execu- tion or save to a path -image-codegen Force generate code in imaging mode FILES AND ENVIRONMENT See https://docs.julialang.org/en/v1/manual/environment-variables/ BUGS Please report any bugs using the GitHub issue tracker: https://github.com/julialang/julia/issues?state=open AUTHORS Contributors: https://github.com/JuliaLang/julia/graphs/contributors JULIA 2022-02-17 JULIA(1)
NAME | SYNOPSIS | DESCRIPTION | COMMAND-LINE OPTIONS | FILES AND ENVIRONMENT | BUGS | AUTHORS
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