Bash if statement: Can I do an assignment and comparison?

I want to do something like:

if [ CURRENT=$(stat -c %Y $STATUS_FILE) -ne $LASTUPDATE ]
    then LASTUPDATE = $CURRENT
fi

开发者_如何学JAVA

That is... I want to assign a variable and do a comparison since I'll use that variable later

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Absolutely.

$ echo "$foo"

$ echo "${foo=$(echo bar)}"
bar
$ echo "$foo"
bar