Bash - Version

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Version of Bash

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Variable

The version information can be found in the following shell variable

BASH_VERSION

Expands to a string describing the version of this instance of bash.

echo ${BASH_VERSION}

4.3.46(1)-release

BASH_VERSINFO

A readonly array variable whose members hold version information for this instance of bash. The values assigned to the array members are as follows:

• BASH_VERSINFO[0] The major version number (the release).
• BASH_VERSINFO[1] The minor version number (the version).
• BASH_VERSINFO[2] The patch level.
• BASH_VERSINFO[3] The build version.
• BASH_VERSINFO[4] The release status (e.g., beta1).
• BASH_VERSINFO[5] The value of MACHTYPE.

Example

• The major version number (the release).

echo ${BASH_VERSINFO[0]}

4

• The minor version number (the version).

echo ${BASH_VERSINFO[1]}

3

• The patch level

echo ${BASH_VERSINFO[2]}

46

• The build version

echo ${BASH_VERSINFO[3]}

1

• The release status (e.g., beta1)

echo ${BASH_VERSINFO[4]}

release

• The value of MACHTYPE

echo ${BASH_VERSINFO[5]}

x86_64-pc-linux-gnu

Documentation / Reference

• http://tldp.org/LDP/abs/html/internalvariables.html