How To Install igrep on CentOS 8

In this tutorial, we will discuss How To Install igrep on CentOS 8 using dnf and yum package managers. Also, we will demonstrate how to uninstall and update igrep as well.

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install openimageio-tools
or if you use dnf:
sudo dnf makecache && sudo dnf -y install openimageio-tools

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is igrep and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 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 igrep on CentOS 8. 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 igrep on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install igrep using dnf by running the following command:

sudo dnf -y install openimageio-tools

Install igrep on CentOS 8 using yum

Because igrep is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install igrep package on your server/computer by running the following command:

sudo yum -y install openimageio-tools

How to upgrade (update) a single package igrep using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like igrep in this example you should use the following command:

yum update openimageio-tools

To downgrade a package to an earlier version:

yum downgrade openimageio-tools

How to Upgrade igrep on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update openimageio-tools

How To remove igrep from CentOS 8

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

sudo dnf remove openimageio-tools

Extra info and code examples

OpenImageIO is a library for reading and writing images, and a bunch of related classes, utilities, and applications. Main features include: * Extremely simple but powerful ImageInput and ImageOutput APIs for reading and writing 2D images that is format agnostic -- that is, a "client app" doesn't need to know the details about any particular image file formats. Specific formats are implemented by DLL/DSO plugins. * Format plugins for TIFF, JPEG/JFIF, OpenEXR, PNG, HDR/RGBE, Targa, JPEG-2000, DPX, Cineon, FITS, BMP, ICO, RMan Zfile, Softimage PIC, DDS, SGI, PNM/PPM/PGM/PBM, Field3d, WebP. More coming! The plugins are really good at understanding all the strange corners of the image formats, and are very careful about preserving image metadata (including Exif, GPS, and IPTC data). * An ImageCache class that transparently manages a cache so that it can access truly vast amounts of image data (thousands of image files totaling hundreds of GB) very efficiently using only a tiny amount (tens of megabytes at most) of runtime memory. Additionally, a TextureSystem class provides filtered MIP-map texture lookups, atop the nice caching behavior of ImageCache. * Several image tools based on these classes, including iinfo (print detailed info about images), iconvert (convert among formats, data types, or modify metadata), idiff (compare images),igrep (search images for matching metadata). Because these tools are based on ImageInput/ImageOutput, they work with any image formats for which ImageIO plugins are available. * A really nice image viewer, iv, also based on OpenImageIO classes (and so will work with any formats for which plugins are available). * Supported on Linux, OS X, and Windows. * All available under the BSD license, so you may modify it and use it in both open source or proprietary apps. This package contains command line tools, including iv image viewer.


You now have a full guide on how to install igrep using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the igrep from CentOS 8.

See also:

How To Install igrep on CentOS 8

How To Install igrep on Ubuntu 21.04

How To Install igrep on Ubuntu 22.04

How To Install igrep on Debian 11

How To Install igrep on Kali Linux

How To Install igrep on Fedora 34