looping through some access_logs

looping_accesslogs.sh

#!/usr/bin/sh
for sistema in sistema1 sistema2 sistema3 sistema4 sistema5 ; do
  for host in `ls -d $sistema/sne*`; do
#    for host in `ls -d sne*`; do
      for file in `ls $host`; do
        echo $host/$file | egrep -q gz$
        if [ $? -eq 0 ] ; then
  	    gzcat $host/$file| awk '{if ($1 ~ /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/) {
                                       sub(/\[/,"",$4)
                                       sub(/\"/,"",$6)
                                       $6 = substr($6,1,7)
                                       sub(/\"/,"",$7)
                                       sub(/\:/,"",$7)
                                       sub(/-/,"0",$10)
                                       print $4","$6",\""$7"\","$9","$10}
                                  else {
                                       sub(/\[/,"",$5)
                                       sub(/\"/,"",$8)
                                       $8 = substr($8,1,7)
                                       sub(/\"/,"",$9)
                                       sub(/\:/,"",$9)
                                       sub(/-/,"0",$12)
                                       print $5","$8",\""$9"\","$11","$12}
                                   }' \
      	| grep "/2012" | awk '{ FS=":" ; print $1 " " $2 ":"$3":"$4 }' \
      	| host_sistema=`echo $host|tr "/" ","` \
      	| awk -v host_sistema=$host_sistema '{ host_sistema=toupper(host_sistema); print host_sistema","$0}' >> loader_source.txt
      	continue
        fi
        cat $host/$file | awk '{if ($1 ~ /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/) {
                                 sub(/\[/,"",$4)
                                 sub(/\"/,"",$6)
                                 $6 = substr($6,1,7)
                                 sub(/\"/,"",$7)
                                 sub(/\:/,"",$7)
                                 sub(/-/,"0",$10)
                                 print $4","$6",\""$7"\","$9","$10}
                            else {
                                 sub(/\[/,"",$5)
                                 sub(/\"/,"",$8)
                                 $8 = substr($8,1,7)
                                 sub(/\"/,"",$9)
                                 sub(/\:/,"",$9)
                                 sub(/-/,"0",$12)
                                 print $5","$8",\""$9"\","$11","$12}
                                  }' \
        | grep "/2012" | awk '{ FS=":" ; print $1 " " $2 ":"$3":"$4 }' \
      	| host_sistema=`echo $host|tr "/" ","` \
      	| awk -v host_sistema=$host_sistema '{ host_sistema=toupper(host_sistema); print host_sistema","$0}' >> loader_source.txt
      done
    done
done