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来自「linux下阅读源码的好工具」· 代码 · 共 13 行

This directory has some generally useful functions.

buffer.c		Buffer management
host.c			DNS and host-specific routines
log.c			Simple, uniform logging
strdup.c		strdup(3) implementation
strerror.c		strerror(3) implementation
string.c		string processing
system.c		routines for running system(3)
xmalloc.c		wrappers for memory management

-Darren Hardy, July 1994