Replace a string once another string has been found

Question

I'm programmatically building boxes, but I need to update a .repo file for PHP which has the following contents:

# Repository: http://rpms.remirepo.net/ # Blog: http://blog.remirepo.net/ # Forum: http://forum.remirepo.net/ [remi] name=Remi's RPM repository for Enterprise Linux 6 - $basearch #baseurl=http://rpms.remirepo.net/enterprise/6/remi/$basearch/ mirrorlist=http://rpms.remirepo.net/enterprise/6/remi/mirror enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-php55] name=Remi's PHP 5.5 RPM repository for Enterprise Linux 6 - $basearch #baseurl=http://rpms.remirepo.net/enterprise/6/php55/$basearch/ mirrorlist=http://rpms.remirepo.net/enterprise/6/php55/mirror # NOTICE: common dependencies are in "remi-safe" enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-php56] name=Remi's PHP 5.6 RPM repository for Enterprise Linux 6 - $basearch #baseurl=http://rpms.remirepo.net/enterprise/6/php56/$basearch/ mirrorlist=http://rpms.remirepo.net/enterprise/6/php56/mirror # NOTICE: common dependencies are in "remi-safe" enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-test] name=Remi's test RPM repository for Enterprise Linux 6 - $basearch #baseurl=http://rpms.remirepo.net/enterprise/6/test/$basearch/ mirrorlist=http://rpms.remirepo.net/enterprise/6/test/mirror # WARNING: If you enable this repository, you must also enable "remi" enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-debuginfo] name=Remi's RPM repository for Enterprise Linux 6 - $basearch - debuginfo baseurl=http://rpms.remirepo.net/enterprise/6/debug-remi/$basearch/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-php55-debuginfo] name=Remi's PHP 5.5 RPM repository for Enterprise Linux 6 - $basearch - debuginfo baseurl=http://rpms.remirepo.net/enterprise/6/debug-php55/$basearch/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-php56-debuginfo] name=Remi's PHP 5.6 RPM repository for Enterprise Linux 6 - $basearch - debuginfo baseurl=http://rpms.remirepo.net/enterprise/6/debug-php56/$basearch/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi [remi-test-debuginfo] name=Remi's test RPM repository for Enterprise Linux 6 - $basearch - debuginfo baseurl=http://rpms.remirepo.net/enterprise/6/debug-test/$basearch/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi 

I would only like to enable PHP 5.6, so I need to find the string [remi-php56], and then the first instance of enabled=0 and change it to enabled=1.

I'm sure there is a sed or awk for this, but I have been unable to figure it out.

Answer 1

Try this:

sed -i -e '/\[remi-php56\]/,/^\[/s/enabled=0/enabled=1/' /etc/yum.repos.d/*.repo 

for process all .repo files, or you can specify single target .repo file.

Or you can use you-config-manager to permanent enable/disable repo by name, if yum-utils packaje is installed in your systems.

Answer 2

Even if this can probably be solved by a sed command, it would be simpler to use the proper command to change yum configuration:

yum install yum-utils yum-config-manager --enable remi-php56 

And notice, this is explained in the Wizard instructions.