amazon web services - zkcli.sh: 13: zkcli.sh: unzip: not found -

i've been trying solr working on aws few days now. i've been following tutorial: tutorial setting solrcloud on amazon ec2 , have when run line in ssh:

sh zkcli.sh -zkhost ec2-xx-xxx-x-xx.compute-1.amazonaws.com:2181,ec2-xx-xx-x-xxx.compute-1.amazonaws.com:2181,ec2-xx-xxx-xx-xx.compute-1.amazonaws.com:2181 -cmd upconfig -confdir /opt/solr_install/example/solr/collection1/conf -confname myconfig   

i following error:

 zkcli.sh: 13: zkcli.sh: unzip: not found     error: not find or load main class org.apache.solr.cloud.zkcli 

i'm not sure how proceed. know what's going on?

i think found trouble. had install unzip i.e. sudo apt-get install unzip