The nm command is mainly used to list symbols in certain files, that is, some functions and global variables, which are often used in code debugging.
Syntax format: nm [parameters]
Common parameters:
Example
# 显示目标文件test.o中的未定义符号，需要和其他对象文件进行链接nm -u test.o # 在/usr/lib/ 目录下找出哪个库文件定义了memset函数nm -A /usr/lib/* 2>/dev/null | grep "T memset"
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