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Editor to share with you how to use the nm command of the Linux system, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Nm is the abbreviation of names. Through this instruction, you can enumerate the symbols in the file (usually the library file), including the object file, the executable file and the symbol information in the object file library.

Syntax nm [parameter] parameter:-A display file name before each symbol-D display dynamic symbol-g display only external symbols-r reverse order display symbol table case demonstration: display undefined symbols in hello.o, need to link with other object files:

[root@linux265 ~] # nm-u hello.o find out which library file defines the memset function in the / usr/lib/ directory:

[root@linux265 ~] # nm-A / usr/lib/* 2 > / dev/null | grep "T memset" displays the version number of nm:

[root@linux265 ~] # nm-v displays debug symbols:

[root@linux265] # nm-a hello.o above is all the content of this article "how to use nm commands in Linux system". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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