Gee, thanks. So, when was I supposed to have used this alias? Hell, I
can live with my ignorance. What's a POSIX system and why is it a POSIX
- a language, I think I heard....
brings you to your home directory.
brings you to the stuff sub-directory of your home directory.
[mpet...@athens ~]$ echo ~
Notice the tilde in the prompt - tells me I am in my home directory when
I issued the command.
POSIX is not a programming language, it is a specification that allows
for some compatability between different operating systems.
With respect to value of issuing shell commands from within php - I'm
sure there are some legitimate uses. I use to do it all the time but now
I really try not to because it makes the php less portable.
IE not only is it now tied to the php modules that I use, but features
of the operating system it is running on top of.
In some cases it may really be necessary - IE when calling the TeX
system to generate a document, or when writing a search engine capable
of indexing not html/xml formats (IE pdf, MS Word, etc.) you may really
need to use the shell of the underlying operating system, but I think
one really should try to find a "pure php" way whenever possible.
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