构建自动化运维典型环境（上）

sed s：字符替换 sed ‘s///’ file sed ‘s/abc.net/efg.com/’ test.txt c：整行替换 sed ‘//c/’ file sed ‘/^SELINUX/cSELINUX=disabled/’ /etc/selinux/config g：全局替换 sed ‘s///’ file sed ‘s/abc.net/efg.com/’ test.txt -n：定

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