Using + rather than – causes these options to be
turned off. e. If set, the value denotes the number
of consecutive EOF characters that can be read as the
first character on an input line
before the shell will exit. I like to write article or tutorial on various IT topics.
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Subshells spawned to execute command substitutions inherit the value of
the -e option from the parent shell. g.
When the old-style backquote form of substitution is used,
backslash retains its literal meaning except when followed by
$, `, or \.
Redirections are processed in the order they appear, from
left to right.
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For that reason, if you are in doubt, you may want to exercise caution or maintain a regular backup of your data.
The values of these names may not be changed by subsequent assignment.
The previous job may be referenced using %-.
Next: GNU Parallel, Previous: Compound Commands, Up: Shell Commands [Contents][Index]A coprocess is a shell command preceded by the coproc
reserved word.
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If the value is 0, the history file is webpage to zero size.
After browse this site expansions, quote removal (see Quote Removal)
is performed. In this case, the return status is
zero if command is found, and non-zero if not. Most sysadmins have used Bash to issue commands that are usually fairly simple and straightforward. When such
a file is used as the first non-option argument when invoking Bash,
and neither the -c nor -s option is supplied
(see Invoking Bash),
Bash reads and executes commands from the file, then exits.
The return status is zero unless a name is not a shell builtin
or there is an error loading a new builtin from a shared object.
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This is also the value that a local variable
declaration shadows, and the value that is restored when the function
returns. .
Next: Tilde Expansion, Up: Shell Expansions [Contents][Index]Brace expansion is a mechanism by which arbitrary strings may be generated. txt tolstoy-backup.
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The -g option forces variables to be created or modified at
the global scope, even when declare is executed in a shell function.
The shell waits for all commands in the pipeline to terminate before
returning a value.
The mode= form of the $if informative post is used to test
whether Readline is in emacs or vi mode.
It must put the possible completions in the COMPREPLY array
variable, one per array element. You may run the same command with different arguments, whether
they are filenames, usernames, hostnames, or lines read from files.
Pattern substitution performs the check for unquoted after
expanding string,
so users should ensure to properly quote any occurrences of
they want to be taken literally in the replacement
and ensure any instances of they want to be replaced are unquoted.
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A sequence of characters treated as a unit by the shell.
Display prompt, without a trailing newline, before attempting
to read any input.
Readline key binding names (see Bindable Readline Commands).
References and assignments to ref, and changes to its attributes,
are treated as references, assignments, and attribute modifications
to the variable whose name was passed as $1. If this character is read when there are no characters
on the line, and point is at the beginning of the line, Readline
interprets it as the end of input and returns EOF.
The default is On.
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GNU
Parallel provides shorthand references to many of the most common operations
(input lines, various portions of the input line, different ways to specify
the input source, and so on).
Next: Exit Status, Previous: Command Execution Environment, Up: Executing Commands [Contents][Index]When a program is invoked it is given an array of strings
called the environment.
The GLOBIGNORE shell variable is not used to filter the matches,
but the FIGNORE shell variable is used.
The maximum size of core files created.
If the -p option is home at invocation, the startup behavior is
the same, but the effective user id is not reset.
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.