...mp /var/log/wtmp VERSIONS POSIX.1 does not specify a utmp structure, but rather one named utmpx (as part of the XSI extension), with specifications for the fields ut_type , ut_p…...mp /var/log/wtmp VERSIONS POSIX.1 does not specify a utmp structure, but rather one named utmpx (as part of the XSI extension), with specifications for the fields ut_type , ut_p…...mp /var/log/wtmp VERSIONS POSIX.1 does not specify a utmp structure, but rather one named utmpx (as part of the XSI extension), with specifications for the fields ut_type , ut_p…