at -- execute commands at a later time (optional Category C software)
._at
._auxiliary
._utilities
._package
._execute
._run
._running
._executing
._later
._delay
awk -- pattern scanning and processing (optional Category C software)
._awk
._pattern
._scanning
._processing
._auxiliary
._utilities
._package
basename --  strip filename prefixes and suffixes from a string (opt. Cat. C)
._native
._programming
._package
._basename
._strip
._filenames
._filename
._pathname
._pathnames
._file
._files
._name
._names
._prefix
._prefixes
._suffix
._suffixes
._from
._string
._strings
bc -- arbitrary-precision arithmetic language (optional Category C)
._interactive
._processor
._bc
._auxiliary
._utilities
._package
._arithmetic
cal -- print calendar (optional Category C software)
._print
._list
._display
._show
._calendar
._cal
calendar -- reminder service (optional Category C software)
._auxiliary
._utilities
._package
._calendar
cron -- execute commands at specified dates and times
._cron
._system
._systems
._manager
._managers
._superuser
._execute
._executing
._execution
._run
._running
._command
._commands
._specified
._specify
._specifying
._date
._time
._timing
._clock
._clocks
._clocking
._daemon
crypt -- encode/decode (optional Category C software)
._encode
._decode
._crypt
._auxiliary
._utilities
._package
dc -- desk calculator (optional Category C software)
._dc
._desk
._calculator
._arithmetic
._auxiliary
._utilities
._package
dd -- convert and copy a file (optional Category C software)
._convert
._copy
._file
._dd
._auxiliary
._utilities
._package
diff3 -- 3-way differential file comparison (optional Category C software)
._compare
._file
._auxiliary
._utilities
._package
factor -- factor a number, generate large primes (optional Category C)
._factor
._prime
._primes
._generate
._number
._auxiliary
._utilities
._package
file -- determine file type  (Category C software)
._file
._files
._determine
._type
._types
._of
._auxiliary
._utilities
._package
graph -- draw a graph (optional Category C software)
._draw
._graph
._auxiliary
._utilities
._package
join -- relational database operator (optional Category C software)
._join
._database
._auxiliary
._utilities
._native
._programming
._package
learn -- computer aided instruction about TNIX (optional Category C)
._learn
._computer
._aided
._instruction
._auxiliary
._utilities
._package
m4 -- macro processor (optional Category C software)
._macro
._process
._m4
._auxiliary
._utilities
._package
plot -- graphics filters (optional Category C software)
._plot
._filter
._graphics
._auxiliary
._utilities
._package
prep -- prepare text for statistical processing (optional Category C)
._prepare
._text
._prep
._statistics
._auxiliary
._utilities
._package
prstat -- print system facts (optional Category C software)
._print
._list
._display
._show
._system
._facts
._prstat
._auxiliary
._utilities
._package
quot -- summarize file system ownership (Category C software)
._auxiliary
._utilities
._package
._quot
._summarize
._file
._files
._system
._filesystem
._ownership
._own
._owns
._who
rev -- reverse lines of a file (Category C software) 
._auxiliary
._utilities
._package
._rev
._reverse
._line
._lines
._of
._file
._files
sed -- stream editor (optional Category C software)
._stream
._editor
._edit
._sed
._auxiliary
._utilities
._native
._programming
._package
spline -- interpolate smooth curve (optional Category C software)
._spline
._interpolate
._smooth
._curve
._auxiliary
._utilities
._package
split -- split a file into pieces (optional Category C software)
._split
._file
._auxiliary
._utilities
._package
sum -- sum and count blocks in a file (optional Category C software)
._sum
._count
._block
._file
._auxiliary
._utilities
._package
tabs -- set terminal tabs (optional Category C software)
._tabs
._tab
._set
._terminal
._auxiliary
._utilities
._package
tar -- tape archiver (optional Category C software)
._archive
._tape
._tar
._auxiliary
._utilities
._package
tk -- paginator for the Tektronix 4014 (optional Category C software)
._tk
._paginate
._4014
._text
._processing
._package
tsort -- topological sort (optional Category C software)
._sort
._tsort
._auxiliary
._utilities
._native
._programming
._package
units -- conversion program (optional Category C software)
._units
._convert
._auxiliary
._utilities
._package
xsend -- secret mail (optional Category C software)
._xsend
._xget
._enroll
._secret
._mail
._auxiliary
._utilities
._package
