mirror of
https://github.com/fish-shell/fish-shell
synced 2024-11-11 23:47:25 +00:00
31 lines
921 B
Text
31 lines
921 B
Text
|
|
||
|
|
\section begin begin - Start a new block of code
|
||
|
|
|
||
|
|
\subsection begin-synopsis Synopsis
|
||
|
|
<tt>begin; [COMMAND;...] end </tt>
|
||
|
|
|
||
|
|
\subsection begin-description Description
|
||
|
|
|
||
|
|
The \c begin builtin is used to create a new block of code. The block
|
||
|
|
is unconditionally erxecuted. Begin is equivalent to <tt>if
|
||
|
|
true</tt>. The begin command is used to group any number of commands
|
||
|
|
into a block. The reason for this is usually either to introduce a new
|
||
|
|
variable scope or to redirect the input ot output of this set of
|
||
|
|
commands as a group.
|
||
|
|
|
||
|
|
\subsection begin-example Example
|
||
|
|
|
||
|
|
The following code sets a number of variables inside of a block
|
||
|
|
scope. Since the variables are set inside the block and have local
|
||
|
|
scope, they will be automatically deleted when the block ends.
|
||
|
|
|
||
|
|
<pre>
|
||
|
|
begin
|
||
|
|
set -x PIRATE Yarrr
|
||
|
|
...
|
||
|
|
end
|
||
|
|
# This will not output anything, since PIRATE went out of scope at the end of
|
||
|
|
# the block and was killed
|
||
|
|
echo $PIRATE
|
||
|
|
</pre>
|