Install spawn in linux

How To Install spawn on Fedora 34

In this tutorial we learn how to install spawn on Fedora 34.

What is spawn

spawn is a simple parallel execution utility written to appeal to the Unix mindset. spawn reads shell command lines from stdin, one per line, and then executes them as maximum of N child processes in parallel, and waits for all of the children to exit. If a child process fails with a non-zero exit code, no new children are spawned. Then spawn waits for all existing children to exit and returns the failed exit code.

We can use yum or dnf to install spawn on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install spawn.

Install spawn on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh 

The output should look something like this:

Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00 Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00 Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00 Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01 Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00 Metadata cache created. 

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

Install spawn on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh 

The output should look something like this:

Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00 Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00 Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00 Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01 Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00 Metadata cache created. 

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

How To Uninstall spawn on Fedora 34

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

spawn Package Contents on Fedora 34

/usr/bin/spawn /usr/lib/.build-id /usr/lib/.build-id/1e /usr/lib/.build-id/1e/8ceb014a83d461459eea1e29bef0880fa0307e /usr/share/doc/spawn /usr/share/doc/spawn/AUTHORS /usr/share/doc/spawn/COPYING /usr/share/doc/spawn/README 

References

Summary

In this tutorial we learn how to install spawn on Fedora 34 using yum and dnf.

Источник

How To Install spawn on Debian 11

In this guide, we’ll discuss How To Install spawn on Debian 11. Also, we will demonstrate how to uninstall and update spawn .

One-liner install command

For those in a hurry, here’s a one-line installation command:

sudo apt-get update && sudo apt -y install postfix

But if you are interested in the detailed steps with descriptions, the following information is for you.

What is spawn and what are the ways to install it?

Short description: High-performance mail transport agent

Before beginning this tutorial, you will need access to a server or computer running Debian 11. This guide was written specifically with a server running Debian 11 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install spawn on Debian 11. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install spawn using apt-get

First, update apt database with apt-get using the following command.

After updating apt-get database, You can install spawn using apt by running the following command:

sudo apt -y install postfix

Install spawn using apt

Because spawn is available in Debian 11’s default repositories, it is possible to install it from these repositories using the apt packaging system.

To begin, update apt database with apt using the following command.

After updating apt database, You can install spawn using apt by running the following command:

sudo apt -y install postfix

Install spawn using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian 11. Update apt database with aptitude using the following command.

After updating aptitude database, You can install spawn by running the following command:

sudo aptitude -y install postfix

How to upgrade (update) a single package spawn using apt-get?

First, you will need to update packages index. Run update command as usual:

Next, to upgrade only the spawn, e.g. single package, you should use the following format with the apt-get command/apt command:

sudo apt-get --only-upgrade install postfix

Note that this command will not install any new packages! If you wish to install the package if it doesn’t exist you may leave out —only-upgrade part.

It’s Good to Know:

sudo apt-get install postfix

This will upgrade the package even if is already installed.

How To Uninstall spawn from Debian 11

To uninstall only the spawn package you can execute the following command:

sudo apt-get remove postfix

Uninstall spawn and all its dependencies

To uninstall spawn and its dependencies that are no longer needed by Debian 11, you can use the command below:

sudo apt-get -y autoremove postfix

Remove spawn with all configurations and data

To remove spawn configuration and data from your system you can run the following purge command:

sudo apt-get -y purge postfix

Remove spawn completely (configurations, data and all of its dependencies)

And lastly, you can run the next command to remove absolutely everything related to spawn package, e.g.: configurations, data and all of its dependencies. Just use this command:

sudo apt-get -y autoremove --purge postfix

Extra info and code examples

Postfix is Wietse Venema’s mail transport agent that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.

Conclusion

You now have a full guide on how to install spawn using apt, apt-get and aptitude tools. Also, we showed how to update as a single package and different ways to uninstall the spawn from Debian 11.

Источник

How To Install spawn on Kali Linux

In this guide, we’ll discuss How To Install spawn on Kali Linux. Also, we will demonstrate how to uninstall and update spawn .

One-liner install command

For those in a hurry, here’s a one-line installation command:

sudo apt-get update && sudo apt -y install postfix

But if you are interested in the detailed steps with descriptions, the following information is for you.

What is spawn and what are the ways to install it?

Short description: High-performance mail transport agent

Before beginning this tutorial, you will need access to a server or computer running Kali Linux. This guide was written specifically with a server running Kali Linux in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install spawn on Kali Linux. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install spawn using apt-get

First, update apt database with apt-get using the following command.

After updating apt-get database, You can install spawn using apt by running the following command:

sudo apt -y install postfix

Install spawn using apt

Because spawn is available in Kali Linux’s default repositories, it is possible to install it from these repositories using the apt packaging system.

To begin, update apt database with apt using the following command.

After updating apt database, You can install spawn using apt by running the following command:

sudo apt -y install postfix

Install spawn using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

After updating aptitude database, You can install spawn by running the following command:

sudo aptitude -y install postfix

How to upgrade (update) a single package spawn using apt-get?

First, you will need to update packages index. Run update command as usual:

Next, to upgrade only the spawn, e.g. single package, you should use the following format with the apt-get command/apt command:

sudo apt-get --only-upgrade install postfix

Note that this command will not install any new packages! If you wish to install the package if it doesn’t exist you may leave out —only-upgrade part.

It’s Good to Know:

sudo apt-get install postfix

This will upgrade the package even if is already installed.

How To Uninstall spawn from Kali Linux

To uninstall only the spawn package you can execute the following command:

sudo apt-get remove postfix

Uninstall spawn and all its dependencies

To uninstall spawn and its dependencies that are no longer needed by Kali Linux, you can use the command below:

sudo apt-get -y autoremove postfix

Remove spawn with all configurations and data

To remove spawn configuration and data from your system you can run the following purge command:

sudo apt-get -y purge postfix

Remove spawn completely (configurations, data and all of its dependencies)

And lastly, you can run the next command to remove absolutely everything related to spawn package, e.g.: configurations, data and all of its dependencies. Just use this command:

sudo apt-get -y autoremove --purge postfix

Extra info and code examples

Postfix is Wietse Venema’s mail transport agent that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.

Conclusion

You now have a full guide on how to install spawn using apt, apt-get and aptitude tools. Also, we showed how to update as a single package and different ways to uninstall the spawn from Kali Linux.

Источник