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Full Discussion: Shell script to read specified value from file and echo to the same location to other file.
Top Forums Shell Programming and Scripting Shell script to read specified value from file and echo to the same location to other file. Post 302915217 by MadeInGermany on Monday 1st of September 2014 04:08:35 PM
Old 09-01-2014
Change your awk backup so it saves the rest of the default: line
Code:
awk '/default:/ {sub (/.*default/,""); sub (/,.*/,","); print}' config.json >def

Or with sed
Code:
sed '/default:/!d; s/.*default//; s/,.*/,/' config.json >def

And restore with the following shell script
Code:
while read line
do
  case $line in
  *default:*)
    read replace <&3
    echo "$line" | sed 's/\(.*default\)[^,]*\(.*\)/\1'"$replace"'/'
  ;;
  *)
    echo "$line"
  esac
done < config.json 3< def > config.json.new
# mv config.json.new config.json

---------- Post updated at 03:08 PM ---------- Previous update was at 02:48 PM ----------

I didn't see Junior's proposal. Storing the whole line is most efficient!
And missed Scrutinizer's post. Go for that one!
This User Gave Thanks to MadeInGermany For This Post:
ausdim
 

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LEARN ABOUT CENTOS

unbound-checkconf

unbound-checkconf(8)						  unbound 1.4.20					      unbound-checkconf(8)

NAME

       unbound-checkconf - Check unbound configuration file for errors.

SYNOPSIS

       unbound-checkconf [-h] [-o option] [cfgfile]

DESCRIPTION

       Unbound-checkconf  checks  the  configuration  file for the unbound(8) DNS resolver for syntax and other errors.  The config file syntax is
       described in unbound.conf(5).

       The available options are:

       -h     Show the version and commandline option help.

       -o option
	      If given, after checking the config file the value of this option is printed to stdout.  For "" (disabled) options an empty line	is
	      printed.

       cfgfile
	      The config file to read with settings for unbound. It is checked.  If omitted, the config file at the default location is checked.

EXIT CODE

       The unbound-checkconf program exits with status code 1 on error, 0 for a correct config file.

FILES

       /etc/unbound/unbound.conf
	      unbound configuration file.

SEE ALSO

       unbound.conf(5), unbound(8).

NLnet Labs							   Mar 21, 2013 					      unbound-checkconf(8)
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