centos7安装ack

sudo yum install epel-release  # 安装 EPEL 存储库
sudo yum install ack     # 安装 ack-grep




wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo rpm -ivh epel-release-latest-7.noarch.rpm




sudo yum clean all
sudo yum makecache

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