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const os = require('os');// Access OS constantsconsole.log('OS Constants:');// Signal constants (like SIGINT, SIGTERM)console.log('\nSignal Constants:');console.log(os.constants.signals);// Error constantsconsole.log('\nError Constants:');console.log(os.constants.errno);// Priority constantsconsole.log('\nPriority Constants:');console.log(os.constants.priority);OS Constants:
Signal Constants:
{
SIGHUP: 1,
SIGINT: 2,
SIGQUIT: 3,
SIGILL: 4,
SIGTRAP: 5,
SIGABRT: 6,
SIGBUS: 7,
SIGFPE: 8,
SIGKILL: 9,
SIGUSR1: 10,
SIGSEGV: 11,
SIGUSR2: 12,
SIGPIPE: 13,
SIGALRM: 14,
SIGTERM: 15,
SIGCHLD: 17,
SIGCONT: 18,
SIGSTOP: 19,
SIGTSTP: 20,
SIGTTIN: 21,
SIGTTOU: 22
}
Error Constants:
{
E2BIG: 7,
EACCES: 13,
EADDRINUSE: 48,
EADDRNOTAVAIL: 49,
EAFNOSUPPORT: 47,
EAGAIN: 35,
EALREADY: 37,
EBADF: 9,
EBADMSG: 94,
EBUSY: 16,
ECANCELED: 89,
ECHILD: 10,
ECONNABORTED: 53,
ECONNREFUSED: 61,
ECONNRESET: 54,
EDEADLK: 11,
EDESTADDRREQ: 39,
EDOM: 33,
EDQUOT: 69,
EEXIST: 17,
EFAULT: 14,
EFBIG: 27,
EHOSTUNREACH: 65,
EIDRM: 90,
EILSEQ: 92,
EINPROGRESS: 36,
EINTR: 4,
EINVAL: 22,
EIO: 5,
EISCONN: 56,
EISDIR: 21,
ELOOP: 62,
EMFILE: 24,
EMLINK: 31,
EMSGSIZE: 40,
EMULTIHOP: 95,
ENAMETOOLONG: 63,
ENETDOWN: 50,
ENETRESET: 52,
ENETUNREACH: 51,
ENFILE: 23,
ENOBUFS: 55,
ENODATA: 96,
ENODEV: 19,
ENOENT: 2,
ENOEXEC: 8,
ENOLCK: 77,
ENOLINK: 97,
ENOMEM: 12,
ENOMSG: 91,
ENOPROTOOPT: 42,
ENOSPC: 28,
ENOSR: 98,
ENOSTR: 99,
ENOSYS: 78,
ENOTCONN: 57,
ENOTDIR: 20,
ENOTEMPTY: 66,
ENOTSOCK: 38,
ENOTSUP: 45,
ENOTTY: 25,
ENXIO: 6,
EOPNOTSUPP: 102,
EOVERFLOW: 84,
EPERM: 1,
EPIPE: 32,
EPROTO: 100,
EPROTONOSUPPORT: 43,
EPROTOTYPE: 41,
ERANGE: 34,
EROFS: 30,
ESPIPE: 29,
ESRCH: 3,
ESTALE: 70,
ETIME: 101,
ETIMEDOUT: 60,
ETXTBSY: 26,
EWOULDBLOCK: 35,
EXDEV: 18
}
Priority Constants:
{
PRIORITY_LOW: 19,
PRIORITY_BELOW_NORMAL: 10,
PRIORITY_NORMAL: 0,
PRIORITY_ABOVE_NORMAL: -7,
PRIORITY_HIGH: -14,
PRIORITY_HIGHEST: -20
}