4.2BSD/usr/include/ar.h

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/*	ar.h	4.1	83/05/03	*/

#define	ARMAG	"!<arch>\n"
#define	SARMAG	8

#define	ARFMAG	"`\n"

struct ar_hdr {
	char	ar_name[16];
	char	ar_date[12];
	char	ar_uid[6];
	char	ar_gid[6];
	char	ar_mode[8];
	char	ar_size[10];
	char	ar_fmag[2];
};