Julia 中得到操作系统的信息

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Julia 的关于操作系统的信息可以通过 Sys 命令来得到，如

help?> Sys
search: Sys SystemError systemerror displaysize subtypes

  Provide methods for retrieving information about hardware and the operating
  system.

输入 Sys. 后按两次 tab，可以查看

julia> Sys.
ARCH              STDLIB             eval               iswindows
BINDIR            UV_cpu_info_t      free_memory        loadavg
CPU_NAME          WINDOWS_VISTA_VER  get_process_title  maxrss
CPU_THREADS       WORD_SIZE          include            set_process_title
CPUinfo           __init__           isapple            total_memory
JIT               _cpu_summary       isbsd              uptime
KERNEL            _show_cpuinfo      isexecutable       which
MACHINE           cpu_info           islinux            windows_version
SC_CLK_TCK        cpu_summary        isunix

可以尝试一下

julia> Sys.isapple()
true

julia> Sys.islinux()
false

julia> Sys.isunix()
true

julia> Sys.iswindows()
false