在基于 RHEL 的系统上匹配后修改行

Question

我正在寻找一种合理的方法（我最初查看 sed 但我认为它很复杂）以启用 yum 存储库中的部分。

我的 Puppet 存储库是：

[puppetlabs-products]
name=Puppet Labs Products El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/products/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1

[puppetlabs-deps]
name=Puppet Labs Dependencies El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/dependencies/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1

[puppetlabs-devel]
name=Puppet Labs Devel El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/devel/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=0
gpgcheck=1

[puppetlabs-products-source]
name=Puppet Labs Products El 7 - $basearch - Source
baseurl=http://yum.puppetlabs.com/el/7/products/SRPMS
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
failovermethod=priority
enabled=0
gpgcheck=1

[puppetlabs-deps-source]
name=Puppet Labs Source Dependencies El 7 - $basearch - Source
baseurl=http://yum.puppetlabs.com/el/7/dependencies/SRPMS
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=0
gpgcheck=1

[puppetlabs-devel-source]
name=Puppet Labs Devel El 7 - $basearch - Source
baseurl=http://yum.puppetlabs.com/el/7/devel/SRPMS
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=0
gpgcheck=1

我希望能够匹配（在本例中）[puppetlabs-devel] 并将启用标志从 0 扔到 1。在基于 RHEL 的系统中执行此操作的明智方法是什么？这必须是一个自动化的解决方案，因为这是引导脚本的一部分，应该没有交互作用。

我一直在胡思乱想，但从来没有真正让它工作过

cat /etc/yum.repos.d/puppetlabs.repo |awk '/\[puppetlabs-devel\]/{print;getline;[=11=]="enabled=1"}1'

预期输出

[puppetlabs-products]
name=Puppet Labs Products El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/products/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1

[puppetlabs-deps]
name=Puppet Labs Dependencies El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/dependencies/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1

[puppetlabs-devel]
name=Puppet Labs Devel El 7 - $basearch
baseurl=http://yum.puppetlabs.com/el/7/devel/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1  ## This portion changed 
gpgcheck=1

[puppetlabs-products-source]
name=Puppet Labs Products El 7 - $basearch - Source
baseurl=http://yum.puppetlabs.com/el/7/products/SRPMS
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
failovermethod=priority
enabled=0
gpgcheck=1

[puppetlabs-deps-source]
name=Puppet Labs Source Dependencies El 7 - $basearch - Source
baseurl=http://yum.puppetlabs.com/el/7/dependencies/SRPMS
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=0
gpgcheck=1

谢谢。

Answer 1

使用sed你会得到这样的东西：

sed '/\[puppetlabs-devel\]/,/^\[/s/^enabled=0/enabled=1/' puppetlabs.repo

此表达式将在 [puppetlabs-devel] 和下一个 [ 之间搜索，更改以 enabled=0.

开头的行

在基于 RHEL 的系统上匹配后修改行

Modifing line after match on a RHEL based system

regex

bash

configuration

awk

sed