bash - How do I pipe in command run using backtick? -

i have bash command,

a=`xyz | head -n 1 | awk '{print $2}'`

which used version number

i using number of times, avoid redundancy, decided store string , execute whenever need, stdout of xyz getting stored variable.

this how i'm doing it,

cmd="xyz | head -n 1 | awk '{print \$2}'" a=`$cmd`

what doing wrong? how fix it? suggest if there simpler/better way of achieving it.

suggest if there simpler/better way of achieving it.

you command can shortened to:

xyz | awk '{print $2; exit}'

and can create function rather storing in string:

mycmd() {     xyz | awk '{print $2; exit}' }

and use as:

a=$(mycmd)

EIght