[ Thanks to IdaAshley for this link.
]
“Many tools are available to solve linear programming problems.
The proprietary tools are well known, but many members of the open
source community may not know about the free GLPK tool.“The first in a series of three articles that show GLPK’s
capabilities and usage, this article briefly describes GLPK and
then demonstrates and applies the GNU MathProg Language in
GLPK…”