How To Install execstack on CentOS 8

execstack is Utility to set/clear/query executable stack bit

Introduction

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

What is execstack

This package is built from prelink sources but contains just the execstack binary. It can be used manipulate ELF binaries to run with or without executable stack.

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

Install execstack 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 execstack using dnf by running the following command:

sudo dnf -y install execstack

Install execstack 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 execstack using yum by running the following command:

sudo yum -y install execstack

How To Uninstall execstack on CentOS 8

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

sudo dnf remove execstack

execstack Package Contents on CentOS 8

/usr/bin/execstack
/usr/lib/.build-id
/usr/lib/.build-id/47
/usr/lib/.build-id/47/141c81efe848899bf9702a78f6dcea6ce18511
/usr/share/doc/execstack
/usr/share/doc/execstack/ChangeLog
/usr/share/doc/execstack/NEWS
/usr/share/doc/execstack/README
/usr/share/doc/execstack/THANKS
/usr/share/doc/execstack/TODO
/usr/share/licenses/execstack
/usr/share/licenses/execstack/COPYING
/usr/share/man/man8/execstack.8.gz

References

Summary

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