tag:blogger.com,1999:blog-4982215793068879977.post663823050794791948..comments2023-09-07T02:56:05.540+08:00Comments on fcamel 技術隨手記: 解決 undefined symbol / referencefcamelhttp://www.blogger.com/profile/04792244455260595133noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4982215793068879977.post-74526160107272628572021-11-05T21:48:18.733+08:002021-11-05T21:48:18.733+08:00These remnants get deposited through the bloodstre...These remnants get deposited through the bloodstream to various parts of the body. In the case of marijuana, THC is what most screening tests look for. There are around 80 various metabolites derived from THC, and each has a different effect on the body. Some of these remnants get metabolized and excreted through urine and feces, while some are stored in the fat since THC is a fat-soluble chemical; this increases the interval of time THC stays in your body. The way THC is metabolized also affects how long drug tests can detect THC in saliva, urine, blood, and hair. Thus, metabolites have a certain life cycle for the time they stay detectable to various drug tests. There are four main forms of drug tests with different detection windows that can detect THC. A hair drug test has the largest half-life, and it descends from here in this order: A hair follicle drug test is increasingly gaining ground among employers. It is one of the most difficult tests to pass since it can detect signs of drug consumption even after 90 days of use. Yes, that means those special brownies you had three months ago can still get you in trouble. These are called adulterated specimens that can hide the drugs present in the urine. Although drug testing machines can detect these chemicals and tag your test invalid, the appliances cannot detect chemicals like isopropanol. However, do your research and be cautious before opting for these methods, as these are fraudulent methods and should be avoided as far as possible. Whether it is liquid or powdered synthetic urine, you need to make that fake pee seem real. Whichever brand you choose to use, the product will have detailed instructions for you to follow. However, if you're looking for a quick introduction to know what you're getting into, we have a quick rundown of the whole process.Unow22https://www.blogger.com/profile/08554619434404859069noreply@blogger.comtag:blogger.com,1999:blog-4982215793068879977.post-44685861827384660352012-01-05T21:40:20.250+08:002012-01-05T21:40:20.250+08:00更新內文:
1. 改用 nm 查, 比較好讀
2. 加上檢查 man page 的步驟更新內文:<br />1. 改用 nm 查, 比較好讀<br />2. 加上檢查 man page 的步驟fcamelhttps://www.blogger.com/profile/04792244455260595133noreply@blogger.comtag:blogger.com,1999:blog-4982215793068879977.post-30343431973024054312011-12-22T01:20:12.178+08:002011-12-22T01:20:12.178+08:001. 已改正
2. 之前看到 readelf、objdump、nm 都能做到類似的事, 想說有需要再...1. 已改正<br />2. 之前看到 readelf、objdump、nm 都能做到類似的事, 想說有需要再來研究各自的使用時機。這個情境看來用 nm 較方便fcamelhttps://www.blogger.com/profile/04792244455260595133noreply@blogger.comtag:blogger.com,1999:blog-4982215793068879977.post-84173435616261895302011-12-21T23:49:21.322+08:002011-12-21T23:49:21.322+08:001. s/objective file/object file/
2. 列出 ELF .o, .so...1. s/objective file/object file/<br />2. 列出 ELF .o, .so 或 executable 中的符號,我通常用<br />nm X.o<br />nm -D /lib/libc.so.6<br />輸出中 'T some_func' 代表定義了 some_func (T: text, global text symbol)<br />'U some_symb' 代表有用到 some_symb (U: undefined)Anonymoushttps://www.blogger.com/profile/18195653023013629876noreply@blogger.com