.xx "ac" "login accounting"
.xx "bcheck" "read all blocks on a file system"
.xx "boot procedures" "UNIX startup"
.xx "chgrp" "change group"
.xx "chown" "change owner"
.xx "clri" "clear i-node"
.xx "crash" "what to do when the system crashes"
.xx "cron" "clock daemon"
.xx "dcheck" "file system directory consistency check"
.xx "df" "disk free"
.xx "dpd" "data phone daemon"
.xx "dump" "incremental file system dump"
.xx "getty" "set typewriter mode"
.xx "glob" "generate command arguments"
.xx "icheck" "file system storage consistency check"
.xx "init" "process control initialization"
.xx "ipatch" "first aid for sick file systems"
.xx "lpd" "line printer daemon"
.xx "mkfs" "construct a file system"
.xx "mknod" "build special file"
.xx "mod" "modify documentation database"
.xx "mount" "mount file system"
.xx "ncheck" "generate names from i-numbers"
.xx "restor" "incremental file system restore"
.xx "sa" "Shell accounting"
.xx "slp" "set printer characteristics"
.xx "su" "become privileged user"
.xx "sync" "update the super block"
.xx "umount" "dismount file system"
.xx "update" "periodically update the super block"
.xx "wall" "write to all users"
