golang doc 代码
文件路径：/src/cmd/nm/doc.go
/ Copyright 2013 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.
/ Nm lists the symbols defined or used by an object file, archive, or executable.
/
/ Usage:
/
/ go tool nm [options] file...
/
/ The default output prints one line per symbol, with three space-separated
/ fields giving the address (in hexadecimal), type (a character), and name of
/ the symbol. The types are:
/
/ T text (code) segment symbol
/ t static text segment symbol
/ R read-only data segment symbol
/ r static read-only data segment symbol
/ D data segment symbol
/ d static data segment symbol
/ B bss segment symbol
/ b static bss segment symbol
/ C constant address
/ U referenced but undefined symbol
/
/ Following established convention, the address is omitted for undefined
/ symbols (type U).
/
/ The options control the printed output:
/
/ -n
/ an alias for -sort address (numeric),
/ for compatibility with other nm commands
/ -size
/ print symbol size in decimal between address and type
/ -sort {address,name,none,size}
/ sort output in the given order (default name)
/ size orders from largest to smallest
/ -type
/ print symbol type after name
package main