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Diffstat (limited to 'doc/redirfd.html')
| -rw-r--r-- | doc/redirfd.html | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/redirfd.html b/doc/redirfd.html index 9dbe409..17b7303 100644 --- a/doc/redirfd.html +++ b/doc/redirfd.html @@ -26,7 +26,8 @@ executes a program. <h2> Interface </h2> <pre> - redirfd [ -r | -w | -u | -a | -x ] [ -n ] [ -b ] <em>fd</em> <em>file</em> <em>prog...</em> + redirfd [ -r | -w | -u | -a | -x ] [ -n ] [ -b ] <em>fd</em> <em>file</em> <em>prog...</em><br> + redirfd [ -r | -w | -u | -a | -x ] [ -n ] [ -b ] [ -v ] [ -e | -E ] <em>var</em> <em>file</em> <em>prog...</em><br> </pre> <p> @@ -34,6 +35,13 @@ executes a program. to <em>file</em>, then execs into <em>prog...</em>. </p> +<p> +When run with the <tt>-v</tt> option, the first argument is instead +interpreted as an environment variable. <tt>redirfd</tt> opens <em>file</em>, +stores the obtained file descriptor into environment variable <em>var</em>, +then execs into <em>prog...</em>. +</p> + <h2> Options </h2> <p> @@ -51,6 +59,14 @@ the -n and -b options may be added in any case. <li> <tt>-b</tt> : change mode of <em>file</em> after opening it: to non-blocking mode if the <tt>-n</tt> option was not given, to blocking mode if it was. </li> + <li> <tt>-v</tt> : interpret the first argument as an environment variable, +and stores the new file descriptor into that variable before execing. </li> + <li> <tt>-e</tt> : no autoimport. This is the default. </li> + <li> <tt>-E</tt> : autoimport. This is only useful with the <tt>-v</tt> option. +Instead of executing +<em>prog...</em>, execute <tt>importas -uSi <em>var</em> <em>prog...</em></tt>. +This substitutes <em>var</em> into the command line instead of putting it into +the environment. </li> </ul> <h2> Notes </h2> |