How do I find the version of bash I am running?

To find my bash version, run any one of the following command:

1. Get the version of bash I am running, type: echo "${BASH_VERSION}"
2. Check my bash version on Linux by running: bash --version
3. To display bash shell version press Ctrl+x Ctrl+v

Check my bash version using ${BASH_VERSION} shell variable

Type echo command or printf command:

echo "BASH_VERSION"
printf "%s\n" $BASH_VERSION

Find bash shell version using the --version option

Just pass the --version to the bash command to show version information for this instance of bash shell on the screen and exit successfully:

bash --version
echo $?

Display version information about the current instance of bash using keyboard shortcut

Just press CTRL + x followed by CTRL + v and you should see something as follows on screen:

GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)

Use package manger to find out bash version

Use the dnf command on a Fedora Linux and yum command on a CentOS/RHEL to get version info about bash package:
$ yum info bash

How to check Bash version on Debian or Ubuntu Linux

Debian/Ubuntu Linux user try the apt command or apt-cache command or dpkg command as follows:
$ apt info bash
OR
$ apt-cache show bash

Conclusion

This page showed you various commands on how to check bash version on your Linux or Unix-like operating system.