Special AIX system commands,alog,pwdck

AIX Bootlog (dmesg on linux): "alog -f /var/adm/ras/bootlog -o"
Check /etc/passwd consistency: "pwdck -n ALL; usrck -n ALL"
Clear accounting information file /var/adm/wtmp: "/usr/sbin/acct/nulladm /var/adm/wtmp"