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Top Forums Shell Programming and Scripting strange behaviour from sed??? Post 302243118 by alirezan on Friday 3rd of October 2008 07:39:07 PM
Old 10-03-2008
strange behaviour from sed???

Hi all,

I want to do a very simple thing with sed. I want to print out the line number of a disk I have defined in /etc/exports, so I do:

Quote:
# sed -n '/md0/=' /etc/exports
3
It's all good, but here's the problem. When I define md0 in a variable, I get nothing from sed:

Quote:
# dev="md0"
# echo $dev
md0
# sed -n '/$dev/=' /etc/exports
#

Why is that? can anybody please help?

Thanks
 

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GGATED(8)						    BSD System Manager's Manual 						 GGATED(8)

NAME
ggated -- GEOM Gate network daemon SYNOPSIS
ggated [-h] [-n] [-v] [-a address] [-p port] [-R rcvbuf] [-S sndbuf] [exports file] DESCRIPTION
The ggated utility is a network server for GEOM Gate class. It runs on a server machine to service GEOM Gate requests from workers placed on a client machine. Keep in mind, that connection between ggatec(8) and ggated is not encrypted. Available options: -a address Specifies an IP address to bind to. -h Print available options. -n Do not use TCP_NODELAY option on TCP sockets. -p port Port on which ggated listens for connection. Default is 3080. -R rcvbuf Size of receive buffer to use. Default is 131072 (128kB). -S sndbuf Size of send buffer to use. Default is 131072 (128kB). -v Do not fork, run in foreground and print debug informations on standard output. exports file An alternate location for the exports file. The format of an exports file is as follows: 1.2.3.4 RO /dev/acd0 1.2.3.0/24 RW /tmp/test.img hostname WO /tmp/image EXIT STATUS
Exit status is 0 on success, or 1 if the command fails. To get details about the failure, ggated should be called with the -v option. EXAMPLES
Export CD-ROM device and a file: # echo "1.2.3.0/24 RO /dev/acd0" > /etc/gg.exports # echo "client RW /image" >> /etc/gg.exports # ggated SEE ALSO
geom(4), ggatec(8), ggatel(8) AUTHORS
The ggated utility as well as this manual page was written by Pawel Jakub Dawidek <pjd@FreeBSD.org>. BSD
April 29, 2004 BSD
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