/sbin/quotacheck
/sbin/quotaoff
/sbin/quotaon
/usr/bin/quota
/usr/bin/quotasync
/usr/sbin/convertquota
/usr/sbin/edquota
/usr/sbin/quota_nld
/usr/sbin/quotastats
/usr/sbin/quot
/usr/sbin/repquota
/usr/sbin/rpc.rquotad
/usr/sbin/setquota
/usr/sbin/warnquota
/usr/sbin/xqmstats
You may install this package on Debian with
apt-get
install quota