`dnf`, `yum`, and `apt` are package managers used in different Linux distributions. Each one has its specific features and is associated with different distributions.
1. **dnf (Dandified YUM)**:
- Used primarily in RPM-based distributions like Fedora, CentOS 8, RHEL 8, and other derivatives.
- Provides a more modern and improved version of `yum`.
- Faster and more efficient due to the use of libsolv library for dependency resolution.
- Has a different command syntax compared to `yum`.
- Introduced in Fedora 18 and became the default package manager in CentOS 8 and newer.
2. **yum (Yellowdog Updater Modified)**:
- Used in RPM-based distributions like CentOS 7, RHEL 7, and older versions of Fedora.
- An older package manager that served as the predecessor to `dnf`.
- Slower and less efficient compared to `dnf`, especially in large repositories with complex dependencies.
- Has a different set of commands and options compared to `dnf`.
- Still available in CentOS 8 but not installed by default.
3. **apt (Advanced Package Tool)**:
- Used primarily in Debian-based distributions like Debian, Ubuntu, and their derivatives (e.g., Linux Mint, elementary OS).
- Uses the `.deb` package format instead of RPM.
- Has a different set of commands and options compared to `dnf` and `yum`.
- Uses `dpkg` as the underlying low-level package manager.
- Generally regarded as easy to use and user-friendly.
While all three package managers serve the same purpose of installing, removing, and managing software packages on a Linux system, the main differences lie in the distribution they are associated with, the package formats they handle (RPM for `dnf` and `yum`, and `.deb` for `apt`), and the specific commands and options they offer. The choice of package manager depends on the Linux distribution being used. For instance, if you are using Fedora, CentOS 8, or RHEL 8, `dnf` would be the default and recommended package manager, while for Debian-based systems, `apt` is the standard choice.
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