This would be very basic question to most of you, but for me as a newbie it is an un-know.
I would like to load a configuration file into memory before executing a specific command. For example: I have a config file that holds all the database connectivity information and I'd like to load this specific db config file in order to execute a command:
config file will have:
I need the values correctly read from the config file that I will load before executing the above command.
Help is much appreciated.
Thanks for the quick turn around, that's one way of doing it which I am aware of. But I need something that I can keep loading dynamically just before executing the command. Password was just an example I provided, I have other variables that I need to load in other scenarios. I need something that I need to do at command line.
like:
do we have something like that in linux, to load configuration at command line dynamically, apart from the one way I have posted in this reply.
Apart from what sea and RudiC already said (and which i can wholeheartedly agree with) here are some other things to consider:
is a quite common malpractice but still a malpractice. "export" is a command (in fact a "reserved word") and a variable declaration is a command. You cannot and should not mix that up. Do it this way:
or, if you insist on one line:
btw., the effect of "export" on a variable is lasting. You do not need the also oftenly seen:
Once a variable is exported, it stays exported ("exported" means: its current value is copied to the environment of any child process it creates) and if you change its value then this new value instead of the old one would be copied to a newly inherited child.
If you "dot-execute" a script like this:
this means that it is executed in the current envrronment instead of creating a new one at the start which is closed at the end (which is the default). This is why changes to the environment are lasting. On the other hand you can use any shell device there is, including control structures. You could accept a parameter and set your environment accordingly, like in the following sketch:
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hi all
need your help.
I am wrting a script that will load data into the table.
then on another load will append the data into the existing table.
Regards
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