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/muhng/ (MIT, 1960) Mash Until No Good.

Sometime after that the derivation from the recursive acronym "Mung Until No Good" became standard. 1. To make changes to a file, especially large-scale and irrevocable changes.

See BLT.

2. To destroy, usually accidentally, occasionally maliciously. The system only mungs things maliciously; this is a consequence of Finagle's Law.

See scribble, mangle, trash, nuke.

Reports from Usenet suggest that the pronunciation /muhnj/ is now usual in speech, but the spelling "mung" is still common in program comments (compare the widespread confusion over the proper spelling of kluge).

3. The kind of beans of which the sprouts are used in Chinese food. (That's their real name! Mung beans! Really!)

Like many early hacker terms, this one seems to have originated at TMRC; it was already in use there in 1958. Peter Samson (compiler of the original TMRC lexicon) thinks it may originally have been onomatopoeic for the sound of a relay spring (contact) being twanged. However, it is known that during the World Wars, "mung" was army slang for the ersatz creamed chipped beef better known as "SOS".
References in periodicals archive ?
Photosynthesis reaction and stoma conductivity of mung bean to severe and light drought stress in various growing stages.
The HMGB1-lowering effect of mung bean is found mainly in the seed coat portion of the bean.
In order to establish the quantitative relationship between SQI and functional goals, linear regressions were worked out between yields and SYIs of sorghum and mung bean as dependent variables (Y) and SQI as independent variable (X).
Shortly before serving, sprinkle mung bean sprout salad with about 1 tablespoon toasted sesame seeds.
In Vietnam, mung beans have been used traditionally, both to detoxify and for diseases of excess heat.
So, after the program is over, the individual should keep eating light, nourishing foods, such as mung dal soup and rice and gradually add vegetables and other foods.
Fresh and colorful alfalfa sprouts, crisp and crunchy mung bean sprouts, or any of the half dozen other kinds of raw sprouts sold in America today add taste and texture to salads, sandwiches, soups, omelets, and other dishes.
Potato-based Aloo Wada are a tantalising blend of potato, onions, lemon juice and garam masala, while Sweet and Spicy Pakora combine brown rice with mung beans and, mango and lime chutney.
It was informed that 22357 ton daal chana, 620 ton daal masoor, 3624 ton daal mung and 452 ton daal maash was existing in the stock.
The expression "good things come in small packages" certainly holds true for mung beans.
Mung bean curry with spinach pistachio is among the recipes included in a file prepared by the ECB's performance nutritionist Chris Rosimus that lists all the juices, soups and salads needed to keep England players fed and watered.