How To Install scponly on CentOS 8

scponly is Restricted shell for ssh based file services

Introduction

In this tutorial we learn how to install scponly on CentOS 8.

What is scponly

scponly is an alternative ‘shell’ for system administrators who would like to provide access to remote users to both read and write local files without providing any remote execution priviledges. Functionally, it is best described as a wrapper to the “tried and true” ssh suite of applications.

We can use yum or dnf to install scponly on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install scponly.

Install scponly on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install scponly using dnf by running the following command:

sudo dnf -y install scponly

Install scponly on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install scponly using yum by running the following command:

sudo yum -y install scponly

How To Uninstall scponly on CentOS 8

To uninstall only the scponly package we can use the following command:

sudo dnf remove scponly

scponly Package Contents on CentOS 8

/etc/scponly
/etc/scponly/debuglevel
/usr/bin/scponly
/usr/lib/.build-id
/usr/lib/.build-id/ca
/usr/lib/.build-id/ca/c9456ce9a6c1e28701c7153a64a3c9740a000d
/usr/lib/.build-id/ca/c9456ce9a6c1e28701c7153a64a3c9740a000d.1
/usr/sbin/scponlyc
/usr/share/doc/scponly
/usr/share/doc/scponly/AUTHOR
/usr/share/doc/scponly/BUILDING-JAILS.TXT
/usr/share/doc/scponly/CHANGELOG
/usr/share/doc/scponly/CONTRIB
/usr/share/doc/scponly/COPYING
/usr/share/doc/scponly/INSTALL
/usr/share/doc/scponly/README
/usr/share/doc/scponly/SECURITY
/usr/share/doc/scponly/TODO
/usr/share/man/man8/scponly.8.gz

References

Summary

In this tutorial we learn how to install scponly on CentOS 8 using yum and dnf.