diff options
Diffstat (limited to 'doc/bash.1')
| -rw-r--r-- | doc/bash.1 | 14 |
1 files changed, 12 insertions, 2 deletions
@@ -3560,7 +3560,10 @@ This is semantically equivalent to \fB>\fP\fIword\fP 2\fB>&\fP1 .RE .PP -(see \fBDuplicating File Descriptors\fP below). +When using the second form, \fIword\fP may not expand to a number or +\fB\-\fP. If it does, other redirection operators apply +(see \fBDuplicating File Descriptors\fP below) for compatibility +reasons. .SS Appending Standard Output and Standard Error .PP This construct allows both the @@ -3688,8 +3691,15 @@ is not specified, the standard output (file descriptor 1) is used. If the digits in .I word do not specify a file descriptor open for output, a redirection error occurs. +If +.I word +evaluates to +.BR \- , +file descriptor +.I n +is closed. As a special case, if \fIn\fP is omitted, and \fIword\fP does not -expand to one or more digits, the standard output and standard +expand to one or more digits or \fB\-\fP, the standard output and standard error are redirected as described previously. .SS "Moving File Descriptors" .PP |