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FAQ: address local variable/env usage

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David Adam (zanchey) 2013-05-23 13:58:16 +08:00 committed by ridiculousfish
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doc_src/faq.hdr
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@ -6,6 +6,7 @@
- <a href='#faq-cmd-history'>How do I run a command from history?</a> - <a href='#faq-cmd-history'>How do I run a command from history?</a>
- <a href='#faq-subcommand'>How do I run a subcommand? The backtick doesn't work!</a> - <a href='#faq-subcommand'>How do I run a subcommand? The backtick doesn't work!</a>
- <a href='#faq-exit-status'>How do I get the exit status of a command?</a> - <a href='#faq-exit-status'>How do I get the exit status of a command?</a>
- <a href='#faq-single-env'>How do I set an environment variable for just one command?</a>
- <a href='#faq-customize-colors'>How do I customize my syntax highlighting colors?</a> - <a href='#faq-customize-colors'>How do I customize my syntax highlighting colors?</a>
- <a href='#faq-update-manpage-completions'>How do I update man page completions?</a> - <a href='#faq-update-manpage-completions'>How do I update man page completions?</a>
- <a href='#faq-cwd-symlink'>Why does cd, pwd and other fish commands always resolve symlinked directories to their canonical path?</a> - <a href='#faq-cwd-symlink'>Why does cd, pwd and other fish commands always resolve symlinked directories to their canonical path?</a>
@ -77,6 +78,23 @@ other shells.
<hr> <hr>
\section faq-single-env How do I set an environment variable for just one command?
<i><tt>SOME_VAR=1 command</tt> produces an error: <tt>Unknown command "SOME_VAR=1"</tt>.</i>
Use the \c env command.
<tt>env SOME_VAR=1 command</tt>
You can also declare a local variable in a block:
<pre>begin
set -lx SOME_VAR 1
command
end</pre>
<hr>
\section faq-customize-colors How do I customize my syntax highlighting colors? \section faq-customize-colors How do I customize my syntax highlighting colors?
Use the web configuration tool, Use the web configuration tool,