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Old 05-20-2010, 09:26 AM   #1
Potatos
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Registered: Apr 2010
Distribution: Fedora 13
Posts: 20

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Question Variables between shell scripts


Hi

Ive created some custom shell scripts to run during the kernels boot process (they are called from the init script).

I was wondering if there's any way to assign a variable that can be accessed between different scripts.

For example my first script checks which type of pc i am installing on and assigns the hard drive location to a variable.

HARDDRIVE = "/dev/sda1"

at the end of the script it calls another script. In this script I cant reference HARDDRIVE as it is blank, to get around this I need to repeat the same code for assigning it.

Its more of a space/aesthetics issue but I figured someone might know the solution off the top of their head.

Thanks
 
Old 05-20-2010, 09:32 AM   #2
colucix
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Registered: Sep 2003
Location: Bologna
Distribution: CentOS 6.5 OpenSuSE 12.3
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If a script (child) is called by another script (parent) you can export variables in the parent script to make them available to the childs, e.g.
Code:
export HARDDRIVE="/dev/sda1"
If they are all childs of the parent shell, you can source them instead of executing, e.g.
Code:
. /path/to/script1
. /path/to/script2
. /path/to/script3
always using the export built-in inside the scripts.
 
  


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