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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".
This article is provided by FOLDOC - Free Online Dictionary of Computing (


Pronounced "mung-ing" or "munj-ing," it is the intentional alteration of the sender's "from" address in an email or Usenet message in order to prevent spam. Programs (bots) cull addresses from servers all over the Internet to add to mailing lists. In order to prevent software from automatically grabbing their addresses, some users mung them so that they cannot be used intact.

Munging is not always condoned. Using invalid sender addresses may violate the rules of some newsgroups and service providers.

Munging Example
The email address could be munged into hunter(AT)computerlanguage(DOT)com or hunter@c-o-m-p-u-t-e-r-l-a-n-g-u-a-g-e.c-o-m. Anyone receiving a message from him and wishing to reply would have to demung the address manually before sending a response.
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References in periodicals archive ?
One of the major challenges facing mung bean production is weed management.
The experimental material for the present study consisted of 50 mung bean genotypes received from Central Arid Zone Research Institute (CAZRI)-Jodhpur.
Erica was able to measure the density of mung beans as they grew, and used this data to produce three-dimensional video models.
Chateau Le Mung in Poitou-Charentes, France, and, inset, Sheryl Bromley and her husband Gerald who have bought it
Mung beans, vignaradiata (L.) is a summer fine legume with a short growth season that is cultivated in rain fed method in central and south east of Asia [4].
In just a few days, the mung beans will sprout leaves.
Vungh Suan Mung was discharged from the hospital on Monday afternoon while his cousin was recuperating at the hospital.
* Drugs that fight HMGB1 are potentially years away from practical use; however, extracts from mung bean seed coat and green tea offer safe, natural anti-HMGB1 therapy--and they are available for oral use now.
In this study, we used the red LEDs and ultraviolet-B (UV-B) radiation as additional light sources for the process of plant cultivation in the laboratory to determine the role of the different qualities of light source on growth and photosynthetic characteristics of mung bean.