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Full Discussion: Whitespace breaking my egrep command
Top Forums Shell Programming and Scripting Whitespace breaking my egrep command Post 302561880 by remixed on Wednesday 5th of October 2011 12:27:06 PM
Old 10-05-2011
Whitespace breaking my egrep command
Hi,

I am writing a bash script which will dynamically generate an egrep command searching for a number of times within a file.

The problem is that I am putting a space in a variable called timestr. When I echo the variable the space comes out normally:
Code:
'(2011-10-05 12:|2011-10-05 13)'

When I try and use it in an egrep command it puts single quotes there and messes up the command:
Code:
+ grep TEST /var/tmp/TEST.log
+ egrep ''\''(2011-10-05' '12:|2011-10-05' '13)'\'''
egrep: Unmatched ( or \(

Below is my code:
Code:
todayf=$(date +%Y-%m-%d)
todayf="${todayf} "
timestr="'("
#Calc hr range
for (( i=${starthr}; $i <= ${endhr}; i++ ))
do
        if [ ${i} -eq ${starthr} ]
        then
                timestr="${timestr}${todayf}${i}:"
        else
                timestr="${timestr}|${todayf}${i}:"
        fi
done
timestr="${timestr})'"
echo ${timestr}
grep =${searchstr} $logpath/$logfile | egrep ${timestr}

Any ideas where I am going wrong?
 

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LEARN ABOUT CENTOS

lzgrep

XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME

       xzgrep - search compressed files for a regular expression

SYNOPSIS

       xzgrep [grep_options] [-e] pattern file...
       xzegrep ...
       xzfgrep ...
       lzgrep ...
       lzegrep ...
       lzfgrep ...

DESCRIPTION

       xzgrep  invokes	grep(1)  on  files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1).  All
       options specified are passed directly to grep(1).

       If no file is specified, then standard input is decompressed if necessary and fed to grep(1).  When reading from standard  input,  gzip(1),
       bzip2(1), and lzop(1) compressed files are not supported.

       If  xzgrep  is  invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1).  The same applies to names lzgrep, lze-
       grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

ENVIRONMENT

       GREP   If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).

SEE ALSO

       grep(1), xz(1), gzip(1), bzip2(1), lzop(1), zgrep(1)

Tukaani 							    2011-03-19								 XZGREP(1)
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