How to make a variable out of the output of a unix command? -


i'm trying have variable $totallines stores total lines in file (given input $1).

i'm trying this: 

totallines= grep -c *.* $1

but unix doesn't that.

i've tried enclosing in paranthesis, square brackets, , (), doesn't work either. has got super simple i'm searching answer around web , not finding page or forum states it.

sorry trouble guys such easy one.

there 2 ways achieve it:

totallines=$(grep -c *.* $1)

or

totallines=`grep -c *.* $1`

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