CentOS7 常见问题

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$ uname -a
# Linux host.localdomain 4.17.5-1.el7.elrepo.x86_64 \
#1 SMP Sun Jul 8 10:40:01 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/redhat-release
# CentOS Linux release 7.5.1804 (Core)

$ rpm -q centos-release
# centos-release-7-5.1804.el7.centos.2.x86_64

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# 编辑~/.bash_profile或~/.bashrc文件
# 加入如下内容
export PATH=<your path 1>:<your path 2>:$PATH

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$ source ~/.bashrc (or ~/.bash_profile)

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$ sudo yum install -y perl-Digest-SHA