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 …

All of the Bourne shell builtin commands are available in Bash, and the rules for evaluation and quoting are taken from the posix specification for the ‘standard’ Unix shell.

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 …

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.

Sep 22, 2020 · Bash is the GNU Project's shell—the Bourne Again SHell. This is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and the C shell (csh).

May 18, 2025 · Some of the shells that Bash has borrowed concepts from are the Bourne Shell (sh), the Korn Shell (ksh), and the C-shell (csh and its successor, tcsh). The following menu …

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 …

Like other GNU software, Bash is quite portable. It currently runs on nearly every version of Unix and a few other operating systems − independently-supported ports exist for Windows and …

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 …

Type ‘ make install ’ to install bash and bashbug. This will also install the manual pages and Info file, message translation files, some supplemental documentation, a number of example …