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CODE EXAMPLE FOR SHELL
grep for substring
output
=
$(
command
)
[
[
$output
=~
(
CpuIowait
=
[
0
-9
]
[
.
]
[
0
-9
]
{
2
}
)
]
]
&&
echo
"
${
BASH_REMATCH
[
1
]
}
"
Source by stackoverflow.com #
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