This error message is usually caused when you do not have scl-utils installed. Try doing

yum install scl-utils
Answer from nikoo28 on Stack Overflow
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GitHub
github.com › sclorg › scl-utils
GitHub - sclorg/scl-utils: Tool to setup and run software from Software Collection environment · GitHub
Tool to setup and run software from Software Collection environment - sclorg/scl-utils
Starred by 15 users
Forked by 23 users
Languages   C 79.8% | Shell 15.2% | CMake 5.0%
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Linuxcnf
linuxcnf.com › 2019 › 09 › how-to-enable-software-collections-scl.html
The Linux Guide: How to Enable Software Collections (SCL) yum repository on CentOS 7
Method 1. The package to enable Software Collection SCL is available in CentOS 7 repository and it can be installed by yum command.
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LinuxConfig
linuxconfig.org › home › how to install python 3 on centos 7 with scl
How to install Python 3 on CentOS 7 with SCL
July 6, 2019 - Check the default python version on your current CentOS 7 system. The following command will install Software Collections and allow you to run applications from SCL shell: $ sudo yum install centos-release-scl scl-utils-build
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Pkgs.org
pkgs.org › download › scl-utils-build
Scl-utils-build Download (RPM)
Download scl-utils-build linux packages for AlmaLinux, Amazon Linux, CentOS, Fedora, Mageia, Rocky Linux · Filter: Distros: all Arches: arm intel Types: official thirdparty · AlmaLinux 9 · AlmaLinux 8 · Amazon Linux 2 · CentOS 9 Stream · CentOS 8 Stream · CentOS 8 · CentOS 7 ·
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Pkgs.org
pkgs.org › download › scl-utils
Scl-utils Download for Linux (rpm) - pkgs.org
May 29, 2013 - Download scl-utils linux packages for AlmaLinux, CentOS, Fedora, Mageia, Rocky Linux · Filter: Distros: all Arches: arm intel Types: official thirdparty · AlmaLinux 8 · CentOS 8 · CentOS 8 Stream · CentOS 7 · Fedora Rawhide · Fedora 34 · Fedora 33 · Mageia Cauldron ·
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GitHub
github.com › benycze › centos-p4-scl
GitHub - benycze/centos-p4-scl: SCL Environment for the translation of P4 related projects · GitHub
In Centos 7, these packages are available in centos-release-scl-rh or centos-release-scl. So, you need to additionally install these packages: ... yum install scl-utils scl-utils-build rpm-build devtoolset-9 wget binutils cmake3 git autoconf ...
Author   benycze
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Linuxcnf
linuxcnf.com › 2018 › 11 › how-to-enable-scl-repository-in-cent-os.html
How to enable SCL Repository in Cent OS 7 - The Linux Guide
November 10, 2018 - The Software Collections (SCL) repository is created to provide safely installation on Cent OS and RHEL and also provide installation of multiple software versions on the same machine. The SCL is available yum default repository on Cent OS 6.5 and later. Set up SCL Repository: The SCL is available ...
Find elsewhere
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YumInstall
yuminstall.org › how-to-install-scl-utils-build-20130529-19-el7-x86_64-on-centos7
How To Install scl-utils-build-20130529-19.el7.x86_64 on CentOS7 - YumInstall
April 25, 2020 - How To Install scl-utils-build-20130529-19.el7.x86_64 on CentOS7. Simple and short steps to install scl-utils-build-20130529-19.el7.x86_64 on CentOS7. Linux | CentOS7 | YumInstall
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Madboa
madboa.com › blog › 2016 › 08 › 29 › scl-intro
Red Hat/CentOS Software Collections (SCL) - madboa.com
August 29, 2016 - There’s a command-line tool, /usr/bin/scl, that eases access to these packages. It will get installed via the scl-utils package the first time you install an SCL rpm. See the scl(1) man page for full usage. In the session below, I’ve installed the rh-python35 package on a CentOS 7 machine.
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CERN
linuxsoft.cern.ch › cern › centos › 7 › updates › x86_64 › repoview › scl-utils.html
scl-utils
CentOS 7 - Updates for x86_64: applications/file: scl-utils · Jump to letter: [ 3ABCDEFGHIJKLMNOPQRSTUVWXYZ ]
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GitHub
gist.github.com › dasgoll › 42cc52cbac6fc6f5bdec
How to enable Software Collections (SCL) on Amazon/RHEL/CentOS · GitHub
March 27, 2019 - How to enable Software Collections (SCL) on Amazon/RHEL/CentOS - gist:42cc52cbac6fc6f5bdec
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Softwarecollections
softwarecollections.org › en › docs
Quick Start — Software Collections
On CentOS, install the SCL release package `centos-release-scl`: ... On RHEL, enable the RHSCL repository. Note that you may also need to enable the Optional channel and attach a subscription providing access to RHSCL to be able to use that repository. yum-config-manager --enable ...
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CERN
linuxsoft.cern.ch › cern › centos › 7 › updates › x86_64 › repoview › scl-utils-build.html
scl-utils-build
CentOS 7 - Updates for x86_64: applications/file: scl-utils-build · Jump to letter: [ 3ABCDEFGHIJKLMNOPQRSTUVWXYZ ]
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RPMfind
rpmfind.net › linux › rpm2html › search.php
RPM resource scl-utils
The System and Arch are optional added filters, for example System could be "redhat", "redhat-7.2", "mandrake" or "gnome", Arch could be "i386" or "src", etc. depending on your system. Run-time utility for alternative packaging.
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Red Hat
access.redhat.com › documentation › ja-jp › red_hat_enterprise_linux › 6 › html › developer_guide › scl-utils
4.7. Software Collections および scl-utils | 開発者ガイド | Red Hat Enterprise Linux | 6 | Red Hat Documentation
scl-utils パッケージは scl ツールを提供します。これは Software Collection を有効にし、Software Collection 環境でアプリケーションを実行します。
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RPMfind
rpmfind.net › linux › rpm2html › search.php
RPM resource scl-utils(x86-64)
The search service can find package by either name (apache), provides(webserver), absolute file names (/usr/bin/apache), binaries (gprof) or shared libraries (libXm.so.2) in standard path. It does not support multiple arguments yet · The System and Arch are optional added filters, for example ...