Web Reference: Bash performs command substitution by executing command in a subshell environment and replacing the command substitution with the standard output of the command, with any trailing newlines deleted. Embedded newlines are not deleted, but they may be removed during word splitting. Nov 7, 2023 · Command substitution is an important feature that allows you to store the output of a command into a variable. Learn to use it. Jul 31, 2023 · This article focuses on the command substitution technique used in a Bash script. There are some sequences of characters that don't represent their true nature but they have special meaning to the operating system and these sequences are known as escape sequences.
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Last Updated: April 9, 2026
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