Permanently enable a SCL

Question

Is there a way that I can permanently enable a SCL?

I've installed rh-php56, and I would like to make sure that it is loaded every time I ssh into my machine.

I am currently running CentOS 7.

Answer 1

using scl enable actually opens a new shell inside your current one, which is quite unclean, especially if done from a login script.

You should place, instead, in your ~/.bash_profile:

source /opt/rh/rh-nginx18/enable

or:

source scl_source enable rh-nginx18

The latter is more "elegant" as it is independent from the actual installation path.

This has the effect of loading the environment in your current shell.

Answer 2

Redhat proposes placing a file in /etc/profile.d, i.e. for python:

$ cat /etc/profile.d/enablepython33.sh
#!/bin/bash
source scl_source enable python33

As this works for the devtools under centos for me you could try this.

Answer 3

I think you could add a line into your shell profile (e.g. ~/.bash_profile) to enable your scl of choice. For example,

scl enable rh-nginx18 bash

EDIT: marked as spoiler since this is dangerous

Reload your profile or logout/login, and you should have access to your SCLs.