w
wait
wall
watch
wbinfo
wc
webalizer
wget
whatis
whereis
which
who
whoami
whois
word-list-compress
write
wrjpgcom
x509
xargs
xmlcatalog
xmllint
xmlwf
xsltproc
xsubpp
xxd
yes
ypdomainname
zcat
zcmp
zdiff
zforce
zgrep
zip
zipgrep
zipinfo
zless
zmore
znew
zsoelim