Bsdextrautils

• col(1) filter reverse line feeds from input
• colcrt(1) filter nroff output for CRT previewing
• colrm(1) remove columns from a file
• column(1) columnate lists
• hd(1) display file contents in hexadecimal, decimal, octal, or ascii
• hexdump(1) display file contents in hexadecimal, decimal, octal, or ascii
• look(1) display lines beginning with a given string
• write(1) send a message to another user