From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 7 Apr 2024 13:41:34 -0500 Subject: new repository --- devdocs/bash/definitions.html | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 devdocs/bash/definitions.html (limited to 'devdocs/bash/definitions.html') diff --git a/devdocs/bash/definitions.html b/devdocs/bash/definitions.html new file mode 100644 index 00000000..748371be --- /dev/null +++ b/devdocs/bash/definitions.html @@ -0,0 +1,25 @@ +

Definitions

These definitions are used throughout the remainder of this manual.

POSIX
+

A family of open system standards based on Unix. Bash is primarily concerned with the Shell and Utilities portion of the POSIX 1003.1 standard.

blank
+

A space or tab character.

builtin
+

A command that is implemented internally by the shell itself, rather than by an executable program somewhere in the file system.

control operator
+

A token that performs a control function. It is a newline or one of the following: ‘||’, ‘&&’, ‘&’, ‘;’, ‘;;’, ‘;&’, ‘;;&’, ‘|’, ‘|&’, ‘(’, or ‘)’.

exit status
+

The value returned by a command to its caller. The value is restricted to eight bits, so the maximum value is 255.

field
+

A unit of text that is the result of one of the shell expansions. After expansion, when executing a command, the resulting fields are used as the command name and arguments.

filename
+

A string of characters used to identify a file.

job
+

A set of processes comprising a pipeline, and any processes descended from it, that are all in the same process group.

job control
+

A mechanism by which users can selectively stop (suspend) and restart (resume) execution of processes.

metacharacter
+

A character that, when unquoted, separates words. A metacharacter is a space, tab, newline, or one of the following characters: ‘|’, ‘&’, ‘;’, ‘(’, ‘)’, ‘<’, or ‘>’.

name
+

A word consisting solely of letters, numbers, and underscores, and beginning with a letter or underscore. Names are used as shell variable and function names. Also referred to as an identifier.

operator
+

A control operator or a redirection operator. See Redirections, for a list of redirection operators. Operators contain at least one unquoted metacharacter.

process group
+

A collection of related processes each having the same process group ID.

process group ID
+

A unique identifier that represents a process group during its lifetime.

reserved word
+

A word that has a special meaning to the shell. Most reserved words introduce shell flow control constructs, such as for and while.

return status
+

A synonym for exit status.

signal
+

A mechanism by which a process may be notified by the kernel of an event occurring in the system.

special builtin
+

A shell builtin command that has been classified as special by the POSIX standard.

token
+

A sequence of characters considered a single unit by the shell. It is either a word or an operator.

word

A sequence of characters treated as a unit by the shell. Words may not include unquoted metacharacters.

+

+ Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
Licensed under the GNU Free Documentation License.
+ https://www.gnu.org/software/bash/manual/html_node/Definitions.html +

+
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