golang args 代码
文件路径：/src/cmd/internal/sys/args.go
/ Copyright 2021 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package sys
/ ExecArgLengthLimit is the number of bytes we can safely
/ pass as arguments to an exec.Command.
/
/ Windows has a limit of 32 KB. To be conservative and not worry about whether
/ that includes spaces or not, just use 30 KB. Darwin's limit is less clear.
/ The OS claims 256KB, but we've seen failures with arglen as small as 50KB.
const ExecArgLengthLimit = (30 << 10)