Six months


cat chmod cp csh date dd df echo ed expr kill ksh ln ls md5
mkdir pax ps pwd rm rmdir sleep stty tar test arithmetic banner
bcd caesar factor gzip hangman morse number pig pom ppt quiz rain
random comsat getty lockspool login_passwd login_reject login_skey
login_tis login_token login_yubikey tradcpp clri disklabel dmesg
fsck_ext2fs fsck_ffs fsck_msdos fsirand growfs iked ncheck_ffs
nologin pflogd ping ping6 route savecore scan_ffs tunefs apply at
awk banner basename bgplg biff cal cap_mkdb cmp col colrm column
comm compress csplit ctags cu cut dc deroff diff diff3 dirname doas
du encrypt env expand file find finger fmt fold from fstat ftp 
gencat getcap getent getopt grep head hexdump htpasswd id indent
infocmp join jot kdump lam last lastcomm leave less lex ld lndir
lock logger logname look m4 make mandoc mesg mktemp nc nice
dig nslookup ld