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Full Discussion: Awk issue
Top Forums Shell Programming and Scripting Awk issue Post 302193008 by potro on Thursday 8th of May 2008 09:07:30 AM
Old 05-08-2008
Quote:
Originally Posted by Franklin52
Is this what you expect:

Code:
awk '/^Listen/{print "LPORT"NR"="$2}' httpd.conf

Regards
No. I expect to replace the existing values:

Listen $LISTEN_PORT1
Listen $LISTEN_PORT2
Listen $LISTEN_PORT3
Listen $LISTEN_PORT4
Listen $LISTEN_PORT5

i=0
while [ $i -le $CRT ]
do
i=$[i+1]
awk '/^Listen/{print $1 " ""\$LISTEN_PORT$i"}' httpd.conf
done

But I get
awk: cmd. line:1: warning: escape sequence `\$' treated as plain `$'
Listen $LISTEN_PORT$i
Listen $LISTEN_PORT$i
Listen $LISTEN_PORT$i
Listen $LISTEN_PORT$i
Listen $LISTEN_PORT$i

And the values to be written in httpd.conf. Should SED be used in this case ?

And I come again with the question on why the variable value is lost when exiting this while:
j=0
grep "^Listen" httpd.conf | awk '{print $2}'|
while read var
do
eval "LPORT"$j=$var
eval echo "\$LPORT$j"
j=$[j+1]
done
echo $LPORT1

Thanks a lot for your time,
Bianca
Last edited by potro; 05-08-2008 at 11:22 AM..
 

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LEARN ABOUT DEBIAN

cupsctl

cupsctl(8)							    Apple Inc.								cupsctl(8)

NAME

       cupsctl - configure cupsd.conf options

SYNOPSIS

       cupsctl	[ -E ] [-U username ] [ -h server[:port] ] [ --[no-]debug-logging ] [ --[no-]remote-admin ] [ --[no-]remote-any ] [ --[no-]remote-
       printers ] [ --[no-]share-printers ] [ --[no-]user-cancel-any ] [ name=value ]

DESCRIPTION

       cupsctl updates or queries the cupsd.conf file for a server. When no changes are requested, the current configuration values are written to
       the standard output in the format "name=value", one per line.

OPTIONS

       The following options are recognized:

       -E
	    Enables encryption on the connection to the scheduler.

       -U username
	    Specifies an alternate username to use when authenticating with the scheduler.

       -h server[:port]
	    Specifies the server address.

       --[no-]debug-logging
	    Enables or disables debug logging in the error_log file.

       --[no-]remote-admin
	    Enables or disables remote administration.

       --[no-]remote-any
	    Enables or disables printing from any address, e.g. the Internet.

       --[no-]remote-printers
	    Enables or disables the display of remote printers shared via the CUPS, LDAP, or SLP protocols.

       --[no-]share-printers
	    Enables or disables sharing of local printers with other computers.

       --[no-]user-cancel-any
	    Allows or prevents users from canceling jobs owned by others.

EXAMPLES

       Display the current settings:
	   cupsctl

       Enable debug logging:
	   cupsctl --debug-logging

       Get the current debug logging state:
	   cupsctl | grep '^_debug_logging' | awk -F= '{print $2}'

       Disable printer sharing:
	   cupsctl --no-shared-printers

KNOWN ISSUES

       You cannot set the Listen or Port directives using cupsctl.

SEE ALSO

       cupsd.conf(5), cupsd(8),
       http://localhost:631/help

COPYRIGHT

       Copyright 2007-2011 by Apple Inc.

12 December 2012						       CUPS								cupsctl(8)
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