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Full Discussion: Random script error with rndc
Top Forums Shell Programming and Scripting Random script error with rndc Post 302941537 by Don Cragun on Friday 17th of April 2015 04:46:25 AM
Old 04-17-2015
Probably something more like:
Code:
rndc -k ${RNDC_KEY} -s ${DNS_SERVER} status > $some_temp_file 2>&1
tail -1 $some_temp_file | grep up

or:
Code:
rndc -k ${RNDC_KEY} -s ${DNS_SERVER} status > $some_temp_file 2>&1
tail -f $some_temp_file | grep up

This User Gave Thanks to Don Cragun For This Post:
maverick72
 

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LEARN ABOUT POSIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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