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commit bash-20090305 snapshot

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Chet Ramey
2011-12-08 20:06:13 -05:00
parent 6932f7f549
commit 602bb73910
38 changed files with 13470 additions and 5936 deletions
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doc/bashref.texi
+8 -6
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@@ -6566,7 +6566,7 @@ refers to the ability to selectively stop (suspend)
the execution of processes and continue (resume)
their execution at a later point. A user typically employs
this facility via an interactive interface supplied jointly
by the system's terminal driver and Bash.
by the operating system kernel's terminal driver and Bash.
The shell associates a @var{job} with each pipeline. It keeps a
table of currently executing jobs, which may be listed with the
@@ -6591,11 +6591,13 @@ process group @sc{id} is equal to the current terminal process group
These processes are said to be in the foreground. Background
processes are those whose process group @sc{id} differs from the
terminal's; such processes are immune to keyboard-generated
signals. Only foreground processes are allowed to read from or
write to the terminal. Background processes which attempt to
read from (write to) the terminal are sent a @code{SIGTTIN}
(@code{SIGTTOU}) signal by the terminal driver, which, unless
caught, suspends the process.
signals. Only foreground processes are allowed to read from or, if
the user so specifies with @code{stty tostop}, write to the terminal.
Background processes which attempt to
read from (write to when @code{stty tostop} is in effect) the
terminal are sent a @code{SIGTTIN} (@code{SIGTTOU})
signal by the kernel's terminal driver,
which, unless caught, suspends the process.
If the operating system on which Bash is running supports
job control, Bash contains facilities to use it. Typing the