The following menu breaks the features up into categories, noting which features were inspired by other shells and which are specific to Bash. This manual is meant as a brief introduction to features found …

Each command in a multi-command pipeline, where pipes are created, is executed in its own subshell, which is a separate process (see Section 3.7.3 [Command Execution Environ-ment], page 46).

Sep 22, 2020 · Documentation for Bash is available online, as is documentation for most GNU software. You may also find information about Bash by running info bash or man bash, or by looking at …

The following redirection operators may precede or appear anywhere within a simple command or may follow a command. Redirections are processed in the order they appear, from left to right.

Bash uses the value formed by expanding the rest of parameter as the new parameter; this new parameter is then expanded and that value is used in the rest of the expansion, rather than the …

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.

More complex shell commands are composed of simple commands arranged together in a variety of ways: in a pipeline in which the output of one command becomes the input of a second, in a loop or …

May 18, 2025 · The following menu breaks the features up into categories, noting which features were inspired by other shells and which are specific to Bash. This manual is meant as a brief introduction …

sed writes output to standard output. Use -i to edit files in-place instead of printing to standard output. See also the W and s///w commands for writing output to other files. The following command …

Print a trace of simple commands, for commands, case commands, select commands, and arithmetic for commands and their arguments or associated word lists to the standard error after they are …