No, it’s multiple --tx-outs:
–tx-out $targetaddr1+$output1+$amount1\ $policyid.$tokenname \
–tx-out $targetaddr2+$output2+$amount2\ $policyid.$tokenname \
–tx-out $targetaddr3+$output3+$amount3\ $policyid.$tokenname \
–tx-out $targetaddr4+$output4+$amount4\ $policyid.$tokenname \
–tx-out $targetaddr5+$output5+$amount5\ $policyid.$tokenname \
–tx-out $targetaddr6+$output6+$amount6\ $policyid.$tokenname \
–tx-out $targetaddr7+$output7+$amount7\ $policyid.$tokenname \
–tx-out $targetaddr8+$output8+$amount8\ $policyid.$tokenname \
Also note that the backslash at the end of each line is just a shell thing. You could also put everything in one big line, but if and only if you want to input a command over several lines to not lose track each line but the final one has to end with a backslash. Has nothing to do with Cardano.