解决 -bash: nc: command not found
问题:
解决
1.方案1
yum install -y nc
2.方案2
- 如果方案1报错或其他可以用方案2
- 步骤:
(1)yum erase nc
(2) wget http://vault.centos.org/6.6/os/x86_64/Packages/nc-1.84-22.el6.x86_64.rpm
(3)rpm -iUv nc-1.84-22.el6.x86_64.rpm
3.问题解决
ok,按上述方案解决执行之后,问题解决
遇到问题:
1)问题1
ERROR: cannot verify vault.centos.org's certificate, issued by ‘/C=US/O=Let's Encrypt/CN=R3’:
Issued certificate has expired.
- 这是因为,当我们使用wget下载不安全的的东西是会提示下列内容
- 解决此问题:
sudo yum install -y ca-certificates
执行完之后,再次使用wget下载即可