Bash Search for string then get the following numbers

I have some parameters that the user can pass to the command, but I need to get the number following a specific string.

Here are some examples of the parameters.

xxx   cpus="12" memory="1500mb"
xxx  -cpus 12 -memory 1500mb
xxx  cpus=12 memory=1500mb

I would like to search for the first occurrence of cpus and return the number 12.
The number could be any where from 1 to 1000.

Thanks
Fixitben
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fixitbenAsked:
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ozoCommented:
bash -c 'a=${*#*cpus};a=${a#[= ]};echo ${a%% *}'  xxx   cpus="12" memory="1500mb"
bash -c 'a=${*#*cpus};a=${a#[= ]};echo ${a%% *}'  xxx   -cpus 12 -memory 1500mb
bash -c 'a=${*#*cpus};a=${a#[= ]};echo ${a%% *}'  xxx  cpus=12 memory=1500mb

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fixitbenAuthor Commented:
Thanks for your help.
This worked well.
ozoCommented:
bash -c 'a=$*;a=${a#*cpus[= ]};echo ${a%% *}'  xxx   cpus="12" memory="1500mb"
bash -c ''a=$*;a=${a#*cpus[= ]};echo ${a%% *}'  xxx   -cpus 12 -memory 1500mb
bash -c 'a=$*;a=${a#*cpus[= ]};echo ${a%% *}' xxx  cpus=12 memory=1500mb
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