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Diffstat (limited to 'doc/fdmove.html')
| -rw-r--r-- | doc/fdmove.html | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/doc/fdmove.html b/doc/fdmove.html index 39bdb2b..00a70f0 100644 --- a/doc/fdmove.html +++ b/doc/fdmove.html @@ -46,10 +46,15 @@ instead of moving it; do not close <em>fdfrom</em>. </li> <h2> Notes </h2> <ul> - <li> <tt>fdmove -c <em>a</em> <em>b</em> prog...</tt> is roughly equivalent to -<tt>sh -c 'exec prog... <em>a</em>>&<em>b</em>'</tt></li> <li> <tt>fdmove <em>a</em> <em>b</em> prog...</tt> is roughly equivalent to -<tt>sh -c 'exec prog... <em>a</em>>&<em>b</em> <em>b</em><&-'</tt></li> +<tt>sh -c 'exec prog... <em>a</em>>&<em>b</em> <em>b</em><&-'</tt>. +It means: if you write to fd <em>a</em> now, it will have the same effect as writing +to fd <em>b</em> beforehand, and you cannot write to fd <em>b</em> anymore. </li> + <li> <tt>fdmove -c <em>a</em> <em>b</em> prog...</tt> is roughly equivalent to +<tt>sh -c 'exec prog... <em>a</em>>&<em>b</em>'</tt>. It means: you can +now write to fd <em>a</em>, and also still write to fd <em>b</em>, and both will have +the same effect as writing to fd <em>b</em> beforehand. </li> + <li> It also works with file descriptors that are open for reading! </li> </ul> </body> |