8.35. Bash-5.2.21

The Bash package contains the Bourne-Again Shell.

Approximate build time: 1.2 SBU
Required disk space: 52 MB

8.35.1. Installation of Bash

First, fix some issues identified upstream:

patch -Np1 -i ../bash-5.2.21-upstream_fixes-1.patch

Prepare Bash for compilation:

./configure --prefix=/usr             \
            --without-bash-malloc     \
            --with-installed-readline \

The meaning of the new configure option:


This option tells Bash to use the readline library that is already installed on the system rather than using its own readline version.

Compile the package:


Skip down to Install the package if not running the test suite.

To prepare the tests, ensure that the tester user can write to the sources tree:

chown -R tester .

The test suite of this package is designed to be run as a non-root user who owns the terminal connected to standard input. To satisfy the requirement, spawn a new pseudo terminal using Expect and run the tests as the tester user:

su -s /usr/bin/expect tester << "EOF"
set timeout -1
spawn make tests
expect eof
lassign [wait] _ _ _ value
exit $value

The test suite uses diff to detect the difference between test script output and the expected output. Any output from diff (prefixed with < and >) indicates a test failure, unless there is a message saying the difference can be ignored. One test named run-builtins is known to fail on some host distros with a difference on the first line of the output.

Install the package:

make install

Run the newly compiled bash program (replacing the one that is currently being executed):

exec /usr/bin/bash --login

8.35.2. Contents of Bash

Installed programs: bash, bashbug, and sh (link to bash)
Installed directory: /usr/include/bash, /usr/lib/bash, and /usr/share/doc/bash-5.2.21

Short Descriptions


A widely-used command interpreter; it performs many types of expansions and substitutions on a given command line before executing it, thus making this interpreter a powerful tool


A shell script to help the user compose and mail standard formatted bug reports concerning bash


A symlink to the bash program; when invoked as sh, bash tries to mimic the startup behavior of historical versions of sh as closely as possible, while conforming to the POSIX standard as well