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page(1): mention ghostscript, /dev/fd

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Russ Cox 2011-10-31 09:31:13 -04:00
parent c383979b01
commit b763f1e0b8
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28
man/man1/page.1
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@ -270,3 +270,31 @@ document references cannot be sent
via plumbing messages.
.PP
There are too many keyboard commands and menu items.
.PP
Displaying a PostScript or PDF file depends both on having
GhostScript
(see
.IR gs (1))
installed and on the underlying operating system
providing a file descriptor device tree at
.BR /dev/fd .
.PP
Some FreeBSD installations
do not provide file descriptors greater than 2
in
.BR /dev/fd .
To fix this, add
.IP
.EX
/fdescfs /dev/fd fdescfs rw 0 0
.EE
.LP
to
.BR /etc/fstab ,
and then
.B mount
.BR /dev/fd .
(Adding the line to
.B fstab
ensures causes FreeBSD to mount the file system
automatically at boot time.)