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popen.3: Add a cross reference to Caveats in system(3) 

All of the same risks regarding system() also apply to popen().

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2017-11-20 15:17:10 +01:00
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@ -194,6 +194,10 @@ POSIX.1-2001, POSIX.1-2008.
The \(aqe\(aq value for
.I type
is a Linux extension.
.SH NOTES
.BR Note :
carefully read Caveats in
.BR system (3).
.SH BUGS
Since the standard input of a command opened for reading shares its seek
offset with the process that called