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Full Discussion: Grep Variable From File
Top Forums Shell Programming and Scripting Grep Variable From File Post 302438414 by kaledragule on Monday 19th of July 2010 03:17:52 PM
Old 07-19-2010
Tools Grep Variable From File
Hey guys,

I'm attempting to compare the contents of two files that are not identical on a Solaris 10 box. We are under audit and I need to do some comparisons of our application accounts with our unix accounts. I essentially want to pull a line from one file and search the second for an equal entry. I cannot use diff since it will just tell me every line is different. Here is the section that is giving me trouble:
Code:
#!/bin/sh
AUDITDIR=/apps/admin/sysadmin/audit
OPERSACCTS=$AUDITDIR/opersAccts
OPERSONLY=$AUDITDIR/opersOnly
for i in $FILE*
do
    if [ -s $i ]
       then
            lower=`tr '[A-Z]' '[a-z]' < $i`
            echo $lower >> $OPERSACCTS
            grep $lower /etc/passwd > /dev/null
            if [ $? != 1 ]
            then
              echo $lower >> $OPERSONLY
            fi
       else
            echo "No OPERS records in list..."
   fi
done

For some reason the contents of $i are getting inserted into the file on a single line. When I try to echo the contents of $i prior to the assignment of the $lower variable I get nothing as if it's blank, yet if I echo out the contents of $lower I get the same one line list of values. I think this is what is messing up my grep statement.

Anybody have pointers. I'm sure this code is spotty and needs some re-working.
 

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LEARN ABOUT REDHAT

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  is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, 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  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	zgrep string files
	   for csh: (setenv GREP fgrep; zgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

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

																	  ZGREP(1)
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